Factory Service Index - Packard Motor Car Information

An Index to Service Information for 1955-56 (55th->56th Series) Packards

1955-56 (55th->56th Series) - ALL ITEMS

MAIN SERVICE INDEX -> 1955-56 (55TH->56TH SERIES) -> ALL ITEMS

Subject	Application	Document
Accelerator Linkage, Adjusting throttle linkage - shift point	56th	SC Vol. 30, No. 5, p. 18
Air Cleaner Gasket, Carburetor - Carter WCFB 2232S correct installation	5540	SC Vol. 29, No. 4, p. 24
Air Cleaner, AC incorrect stud - missing wing nut	5540	SC Vol. 29, No. 9, p. 46
Air Cleaner, AC incorrect stud - missing wing nut	5540	STB 55T-24, Dealer 19
Antenna, Electric front fender - drive assembly replacement	55th-56th	SSB No. 319, p. 7
Antenna, Electric: Motor Failure burned out - weak battery	24th-54th; (55th-56th)	SC Vol. 28, No. 8, p. 52
Antenna, Electric: Servicing Packard 55th-56th dome nut and insulator	55th-56th-57th	SSB No. 330, p. 4
Antenna, Electric: Servicing the Packard service parts detail	55th-56th-57th	SSB No. 328, p. 5
Anti-Freeze - Types Information about the different types	(Not Specified)	SL Vol.7, No. 15
Anti-Freeze Factory Delivery Cars	(Not Specified)	SL Vol.8, No. 24
Auto-Lite Generators production substitution - identification	56th	SC Vol. 29, No. 12, p. 65
Axle Shaft, Flanged engineering non-conformance - identification, replacement	56th	Letter to Dealers, Nov. 2, 1955
Balance Weights, Chrome Wire Wheel coming off - new type	24th-26th; (54th-56th)	SC Vol. 27, No. 9, p. 40
Band Adjustments clarification of STB 56T-6	56th	STB 56T-11 (Zones only)
Batrometer Overview and Use	(not specified)	SL Vol. 4, No. 22
Batteries, Storage OE unavailable - alternate replacements	55th	STB 55T-15, Dealer 13
Battery - Negative Terminal Grounded polarizing generator	56th	STB 55T-49, Dealer 40
Battery Life Information	(Not Specified)	SL Vol.8, No. 23
Battery, 12 Volt Characteristics new model information	55th	SC Vol. 29, No. 9, p. 44
Battery, 12 Volt Characteristics new model information	55th	STB 55T-3, Dealer 3
Bearings, Care of Ball and Roller installation/removal damage - proper support	(all models)	SC Vol. 20, No. 8
Bell Housing Oil Seal leaks - superseded part, use of prelube	56th; 56J	SSB No. 351, p. 4
Bell Housing Oil Seal leather leaks - use neoprene	23rd-24th; (25th-55th)	SC Vol. 25, No. 8, p. 31
Bell Housing Oil Seal Leaks converter mis-alignment - checks	23rd-24th; (25th-56th)	SC Vol. 25, No. 10, p. 40
Body Shop Supplies Information	(not specified)	Trade Letter No. 2801
Body Side Sills Painted Internally rust prevention - new hole plug	54th; (55th-56th)	SC Vol. 28, No. 9, p. 55
Breather fluid leaking - check level, relocate	56th	SC Vol. 30, No. 9, p. 34
Bumper Attachment, Universal new special tool - floor jack	(all models)	SC Vol. 30, No. 6, p. 24
Bumper Guards Exhaust Noise	(Not Specified)	SL Vol.8, No. 24
Bumper Impact Bar, Front - Lower superseded part	55th	SC Vol. 30, No. 6, p. 24
Bumper Support Arms, Rear superseded	55th	SSB No. 319, p. 6
Bushing Tools, Service description and illustration of use	23rd-55th	SC Vol. 28, No. 12, p. 65
Bushings and Bearings, Service part number reference	23rd-56th	SSB No. 355, p. 6
Bushings, Service part number reference	23rd-55th	SC Vol. 28, No. 12, p. 70
Buzzing Noise in Reverse pump check valve binding - rework	55th	SC Vol. 28, No. 12, p. 70
Carburetor: Caribbean (twin Rochester 4GC) description and servicing	5588	SC Vol. 29, No. 6, p. 32
Carburetor: Carter WCFB 2232S description and servicing	5540	SC Vol. 29, No. 2, p. 11
Carburetor: Carter WCFB 2394S description and servicing	5660	SC Vol. 29, No. 10, p. 47
Carburetor: Carter WGD 2393S description and servicing	5640	SC Vol. 29, No. 10, p. 51
Carburetor: Metering Rods - Jets - Repair Kits part numbers	55th	SC Vol. 29, No. 8, p. 39
Carburetor: Metering Rods - Jets - Repair Kits part numbers	56th	SC Vol. 30, No. 8, p. 31
Carburetor: Primary Venturi Brass Rings, Rochester loose, falling into intake - campaign	5688	STB 56T-23 (Zones only)
Carburetor: Rochester 4GC description and servicing	5680	SC Vol. 29, No. 10, p. 54
Carburetor: Rochester 4GC description and servicing	5560-80	SC Vol. 29, No. 2, p. 15
Carburetor: Tools - Additions new secondary float and unloader gauges - complete special tool reference	56th	SC Vol. 29, No. 12, p. 66
Carburetor: Tools - Carter WCFB 2232S complete special tool reference	5540	SC Vol. 29, No. 3, p. 20
Carburetor: Tools - Idle Mixture Adjusting additional, with dual carburetors	5588	SC Vol. 29, No. 6, p. 33
Carburetor: Tools - Rochester 4GC complete special tool reference	5560-80	SC Vol. 29, No. 3, p. 20
Caribbean Carburetors supplemental information	5588	SC Vol. 29, No. 6, p. 32
Changes in... (Confidential) production - with part, effective date/unit	55th	STB 55T-11 (Zones only)
Changes in... (Confidential) production - with part, effective date/unit	56th	STB 56T-6 (Zones only)
Changes in... production - with part, effective date/unit	55th	STB 55T-22 (Zones only)
Chrome Plate Protective Coating applied for shipping - safe removal	55th	STB 55T-31, Dealer 22
Combustion Test With Dual Exhaust preferred pickup connection point	55th	SC Vol. 29, No. 3, p. 22
Control Valve: Assemblies, Complete identification - not interchangeable	55th-56th	SSB No. 358, p. 6
Control Valve: Changes to Improve Shift Pattern update to 56th Series - new valving kits	54th-55th	SC Vol. 30, No. 8, p. 29
Control Valve: Torque-Tightening Controls stuck valves - fluid/pressure leaks	23rd-56th	SC Vol. 30, No. 9, p. 35
Control Valve: Torquing Valve Body Bolts erratic pressure readings	55th	SC Vol. 29, No. 4, p. 24
Control Valve: Valve Springs and Spacer - Caribbean production change - new type	5588	STB 55T-26 (Zones only)
Converter: Fluid Leaks damaged washers - use of sealant	23rd-56th; 56J	SSB No. 350, p. 1
Converter: Pump Shaft - Oil Pump Rotor Splines - see also: Front Oil Pump	--	--
Converter: Pump Shaft - Oil Pump Rotor Splines - Worn or Stripped - Correction new 40-spline service parts	54th-55th-56th	SC Vol. 30, No. 5, p. 17
Converter: Pump Shaft - Oil Pump Rotor Splines - Worn or Stripped new 40-spline service parts	54th-55th-56th	SC Vol. 30, No. 3, p. 10
Converter: Pump Shaft and Oil Pump Rotor worn/stripped splines - corrections, superseded parts	54th-55th-56th; 56J	SSB No. 331, p. 4
Converter: Reaction Clutch Sprags premature failure - replace in sets	54th-55th-56th; 56J	SSB No. 348, p. 3
Converter: Reaction Clutch Sprags replacement - use of reaction clutch assembly	54th-55th-56th; 56J	SSB No. 358, p. 7
Converter: Reactor End Play new measuring method and special tool	55th	SC Vol. 29, No. 3, p. 21
Converter: Reactor End Play revisions to checking method and special tool	56th	STB 55T-52, Dealer 43
Converter: Reactor Shaft Bushing Clearance direct drive failure - excessive clearance	23rd-24th; (25th-55th)	SC Vol. 25, No. 8, p. 31
Converter: Torque (Reactor End Play) improved end play control, elimination of wave washer - assembly superseded, identification	56th; 56J	SSB No. 331, p. 6
Converter: Torque (Reactor End Play) wave washer kit cancelled	56th; 56J	SSB No. 339, p. 4
Courtesy Coats and Mechanics Suits Information on availabity and sizes	(not specified)	SL Vol. 1, No. 17A
Crankshaft Front Oil Seals leaking - new type	55th-56th	SC Vol. 30, No. 3, p. 12
Crankshaft Identification balance/usage	55th	SC Vol. 29, No. 5, p. 30
Crankshaft Identification correction	55th	SC Vol. 29, No. 8, p. 41
Crankshafts, Replacement superseded part - drop-forged	5560-80; 56th	SSB No. 350, p. 7
Cylinder and Piston Assembly installation with standard transmission	55th	SC Vol. 29, No. 8, p. 42
Cylinder Head Oil Passage noisy rockers levers - restricted	55th	STB 55T-5 (Zones only)
Cylinder Heads, Cast Dome production change - new specifications and adjustments and identification	5540	SC Vol. 29, No. 7, p. 35
Delco Distributor Tools New Service Tool Set	(not specified)	SL Vol. 1, No. 1
Detonation - Supplement revised distributor mainshaft assembly	5680	STB 56T-17, Dealer 14
Detonation Auto-Lite distributor conversion kits	5640-60-70	STB 56T-19, Dealer 16
Detonation insufficient octane - production change, Delco distributor conversion kits	56th	STB 56T-14, Dealer 11
Direct Drive Clutch: Engagement shift valve piston and spring	55th	SC Vol. 29, No. 2, p. 18
Direct Drive Clutch: Engagement slipping - new high speed governor spring	55th	SC Vol. 29, No. 9, p. 45
Direct Drive Clutch: Engagement slipping and shift points	55th	STB 55T-7, Dealer 6
Direct Drive Clutch: Engagement, Loss of input/crankshaft end play, bushing position, restricted fluid passages - modifications	55th	SSB No. 320, p. 4
Direct Drive Clutch: Piston Ring Installation, Converter improper/slow engagement - check ring gap	55th-56th; 56J	SSB No. 358, p. 6
Direct Drive Clutch: Slippage - Gear Start slipping due to oil - removal of chamfers (reference for SC Vol. 29, No. 9, p. 45)	54th	SC Vol. 28, No. 10, p. 58
Direct Shift Valve Piston Spring Seat clutch engagement point, valve body leaks - correct installation	55th	SC Vol. 29, No. 5, p. 30
Direct Shift Valve Piston Springs interchangeable parts	55th	STB 55T-43, Dealer 34
Directing Acting Shocks - Repair Kit Discontinured Information	(not specified)	PAB 45P-9
Directional Signal Switch not cancelling - sleeve position	55th	SC Vol. 29, No. 3, p. 22
Distributor Specifications Caribbean - revisions	5688	SC Vol. 30, No. 1, p. 4
Distributor Vacuum Control Assembly Delco - superseded	5560-80	SSB No. 350, p. 8
Door (and Window) Handle Retainer, Inside falling off - new type	55th	SC Vol. 29, No. 4, p. 25
Door (and Window) Handle Retainer, Inside falling off - revised part	55th-56th	SC Vol. 30, No. 5, p. 20
Door Glass, Broken loose runway end	56th	SC Vol. 30, No. 9, p. 36
Door Lock Strikers Spacers misaligned - adjustment	56th	STB 56T-3, Dealer 2
Door Locks, Electric inoperative - disconnected wiring	56th	SC Vol. 30, No. 6, p. 24
Dust Leaks trunk compartment - locating	55th	SC Vol. 29, No. 9, p. 46
Dust Leaks in Trunk Compartment new wider tail lamp body gasket	5580	SC Vol. 29, No. 7, p. 37
Engine and Parts - Service Bulletin Correction see SSB No. 350, p. 6 - engine/part numbers	22nd-54th; 55th-56th	SSB No. 351, p. 3
Engine and Parts - V8 Engines 1955 320-cid stripped engines - will fit 1956	55th-56th	SSB No. 350, p. 7
Engine Numbers Utica number location - changes, identification	55th	SC Vol. 29, No. 5, p. 29
Engine Runaway - Flare - Low Brake Information premature failure of high range clutch - summary of checks and corrections	54th-55th-56th	SC Vol. 30, No. 7, p. 25
Engine Runaway - Low to High Shifts high range clutch piston oil passages restricted - modification	55th	SC Vol. 29, No. 8, p. 40
Engine Runaway - Low to High Shifts low throttle pressure - install extension kit	55th	SC Vol. 29, No. 9, p. 45
Engine Runaway - Low to High Shifts low throttle pressure - install extension kit	55th	STB 55T-32, Dealer 23
Engine Runaway low range brake spring changes	54th-55th	STB 56T-2, Dealer 1
Engine Runaway new valve body separator plate, low range brake spring changes	56th	STB 56T-7, Dealer 5
Engine Runaway/Flare - see also: Front Oil Pump High Range Clutch Low Range Brake Push Button Control Throttle Control/Linkage	--	--
Engine Vibration Different Causes of Vibration	(not specified)	SL Vol. 2, No. 8
Engine, Service wrong colors, valve covers - casting numbers, identification	55th	STB 55T-33, Dealer 24
Evaporator Case Water Leaks right turns - modifications	55th-56th	STB 56T-21, Dealer 18
Exhaust Noise Bumper Guards	(Not Specified)	SL Vol.8, No. 24
Filler Tube Length (and dipstick) shorter - not interchangeable	55th	SC Vol. 29, No. 3, p. 19
Flat Spot or Hesitation - Rochester pump plunger deformed	5560-80	SC Vol. 29, No. 3, p. 21
Fluid Temperature Affects...Upshift loss of pressure, bushing wear - pressure tests	54th-55th-56th; 56J	SSB No. 339, p. 5
Fluid, Transmission - Correction fluid identification number	55th	SC Vol. 29, No. 10, p. 54
Fluid, Transmission improved type - anti-friction qualities, cold-weather perfomance	55th	SC Vol. 29, No. 8, p. 41
Fresh Air Heater Core service part number	55th-56th	SC Vol. 30, No. 9, p. 36
Front Oil Pump - see also: Converter Pump Shaft	--	--
Front Oil Pump and Converter Shaft Kits new parts	54th-55th-56th	SC Vol. 30, No. 8, p. 32
Front Oil Pump Oil Passage Restriction Test engine runaway/flare, premature high range clutch failures - diagnosis	55th-56th	SC Vol. 30, No. 6, p. 21
Front Wheel Bearing (Torque Specifications - Addition) revised torquing procedure	55th	SC Vol. 30, No. 8, p. 32
Front Wheel Bearing Adjustment (Correction) revised torquing procedure	24th-56th	SC Vol. 30, No. 5, p. 20
Front Wheel Bearing Adjustment revised torquing procedure	24th-56th	SC Vol. 30, No. 3, p. 11
Front Window - Water Deflector Production Change, Retrofit	12th Series	SL Vol.8, No. 24
Fuel Pump Noise kinked/restricted hose or tube	(not specified)	SC Vol. 28, No. 9, p. 56
Gasoline Fumes (Rochester) deceleration, right turns - return for rework	5560-80	STB 55T-41, Dealer 32
Gasoline Fumes (Termination Rochester Carburetor Correction) new gasket, field modification	5560-80	STB 56T-15, Dealer 12
Gasoline Fumes, Rochester Carburetor supplement - new gasket, field modification	5560-80	SC Vol. 30, No. 2, p. 7
Gauges, Erratic instruments fuse	55th	SC Vol. 29, No. 6, p. 34
Gear Tooth Pattern noise - pinion adjustment	56th	SC Vol. 30, No. 8, p. 30
Gearshift Indicator Pointer misalignment - new clamp	55th	SC Vol. 29, No. 7, p. 37
Hard Steering knuckle thrust bearing	55th	SC Vol. 29, No. 4, p. 24
Headlamp Door Wind Whistle diagnosis - repair	5640-60	STB 55T-54, Dealer 45
Headlights, New Style Sealed Beam improved design - use in pairs	18th-54th; 55th-56th	SC Vol. 29, No. 8, p. 42
Heater Hose Kinked insufficient heat - reroute	55th	SC Vol. 29, No. 4, p. 25
Hesitation or Stumbling - Carter WGD-2393S revised pump plunger, jet/housing, and fast idle cam	5640	STB 56T-12, Dealer 9
High Range Clutch: (failures) operating precautions	56th; (54th-55th)	SC Vol. 30, No. 4, p. 16
High Range Clutch: Burning high range clutch spring and piston	55th-56th; 56J	SSB No. 327, p. 8
High Range Clutch: Burning spring data correction	55th-56th; 56J	SSB No. 338, p. 3
High Range Clutch: Driving Plate new heavy-duty type - installation procedure	55th-56th; 56J	SSB No. 344, p. 2
High Range Clutch: Housing - Part Nos. 458950 and 6484046 clearance checks - grind welds	55th-56th; 56J	SSB No. 359, p. 6
High Range Clutch: Housing - Part Nos. 458950 and 6484046 damaged seal, insufficient chamfer - return for exchange	55th-56th; 56J	SSB No. 346, p. 4
High Range Clutch: Housing Identification differentiation - check end play as installed	55th-56th; 56J	SSB No. 346, p. 4
High Range Clutch: Problems load pick up and slippage - checks, adjustments, and service precautions	55th-56th	SSB No. 320, p. 5
Holding Adapter special tool	56th	SC Vol. 30, No. 2, p. 8
Horn Button Contact not closing - spacers added	55th	SC Vol. 29, No. 8, p. 42
Horn Ring Contact Plate Retainer ring misaligned - new design	56th	SC Vol. 30, No. 4, p. 16
Hose Clamp Pliers new special tool - radiator/heater, spring wire type	24th; (25th-56th)	SC Vol. 25, No. 6, p. 24
Hydraulic Tappet Leak-Down noise after cold start - redesigned	55th	STB 55T-29 (Zones only)
Hydraulic Tappet Noise low gallery oil pressure, hot - camshaft thrust plate/spacer, main bearing clearnace	55th	SC Vol. 30, No. 1, p. 3
Hydraulic Tappets - General Information clicking/noisy - diagnosis, cleaning, testing	55th-56th	SC Vol. 30, No. 8, p. 31
Hydraulic Tappets, Noisy idle or 40-50MPH, hot - oil aeration, sticking relief valve	56th	SC Vol. 30, No. 3, p. 11
Hydraulic Tests preliminary service information	55th	SC Vol. 28, No. 11, p. 62
Hydraulic Valve Lifter Checking Tool new special tool - adapting old tool	55th-56th	SC Vol. 30, No. 2, p. 6
Hydraulic Valve Lifters superseded part	55th-56th; 56J	SSB No. 344, p. 2
Hydraulic Valve Tappet Letdown, Oil Pump Relief Valve Tube Kit for Correction of intermittent at idle, 40-60MPH, hot - revised pump/sump tube, pressure checks/corrections reiterated	55th-56th	STB 56T-20, Dealer 17
Ignition Cable Support Brackets - Caribbean cables chafed - relocation	5588	STB 55T-25 (Zones only)
Ignition Cable Support Brackets cross-firing - new type and wires	55th-56th	SC Vol. 30, No. 3, p. 9
Ignition Resistors burned points, misfiring - identification	55th-56th	SC Vol. 30, No. 2, p. 6
Ignition Timing first production - octane issues	5680-88	SC Vol. 29, No. 12, p. 65
Ignition Timing, Incorrect excessive vacuum - inspection and adjustment	5540	STB 55T-39, Dealer 30
Instrument Panel Paint Schemes dealer installed A/C - color matching vents	55th	STB 55T-21, Dealer 18
Leaks - see also: Bell Housing Oil Seal Breather Converter Oil Loss	--	--
Linkage Adjustments - see also: Throttle Control Rod Throttle Linkage Throttle Valve Lever	--	--
Low Range Brake: Cap distorted - designed shape	56th	SC Vol. 30, No. 5, p. 20
Low Range Brake: Functions Improperly distorted cap	55th	SC Vol. 29, No. 9, p. 45
Low Range Brake: Functions Improperly distorted cap	55th	STB 55T-17, Dealer 15
Low Range Brake: Information harsh, noisy, runaway/flare - correct springs, new separator plate	56th	STB 56T-18, Dealer 15
Low Range Operation high range clutch failure - proper use of low range	23rd-25th; (26th-56th)	SC Vol. 25, No. 14, p. 67
Low Range Operation high range failure - proper use	23rd-25th; (26th-56th)	STB 51T-39, Dealer 34
Low Regulator Valve kickdown runaway - oil passage change	55th	SC Vol. 29, No. 7, p. 38
Low Speed Disturbance direct drive - alter shift point	54th-55th	SC Vol. 30, No. 2, p. 5
Lubrication Charts new model information	55th	SC Vol. 29, No. 1, p. 9
Lubrication Charts new model information	56th	SC Vol. 29, No. 13, p. 9
Manual Valve Control Lever Inner Stop superseded part - modified installation	55th	SSB No. 324, p. 5
Mechanical Specification Changes (Cast Dome Cylinder Heads) distributor, carburetor, spark plugs	5540	SC Vol. 29, No. 7, p. 35
Mechanical Specifications and Adjustments new model information	55th	SC Vol. 29, No. 1, p. 1
Mechanical Specifications and Adjustments new model information	56th	SC Vol. 29, No. 13, p. 1
Motor Oil New Recommendations	(Not Specified)	SL Vol.7, No. 18
Oil Consumption - see also: Piston Rings Rocker Lever Shaft Holes Valve Spring Baffles	--	--
Oil Consumption excessive - rocker levers shafts, intake valve deflectors, and piston rings	55th	STB 55T-19, Dealer 16
Oil Cooler leaks - internal modifications, same number	55th-56th	SSB No. 322, p. 4
Oil Drain Plug Gasket new nylon type	22nd-56th	SC Vol. 30, No. 1, p. 4
Oil Filler Tube Baffle oil splash - redesigned tube	55th	SC Vol. 29, No. 7, p. 38
Oil Loss breather - relocation	(56th); 56J	SSB No. 319, p. 5
Oil Loss at Breather level, restrictions, overheating - relocation	23rd-56th; 56J	SSB No. 339, p. 3
Optional Paint and Upholstery Schemes 1956 Information	56th Series	Trade Letter No. 56-1004
Park, Locking in pawl and gear clearance - loose, worn, damaged parts	54th-55th-56th	SSB No. 340, p. 4
Parking Lock Sticking control lever set screw relocated - rod shortened	55th	SC Vol. 30, No. 1, p. 4
Parking Lock Sticking manual valve modification - new parking gear	55th	SC Vol. 29, No. 7, p. 36
Pinion Depth Setting supplemental procedure	56th	SSB No. 330, p. 3
Pinion Nut, Drive (Torque Specifications - Additions) supplemental information	56th	SC Vol. 30, No. 8, p. 32
Pinion Rear Bearing and Sleeve, Differential identification	55th	SC Vol. 29, No. 9, p. 44
Piston Pin Lock groove and wire size change	55th	SC Vol. 29, No. 8, p. 40
Piston Pin Locks supplemental usage	56th	SC Vol. 29, No. 12, p. 65
Piston Rings, Chrome excessive oil consumption - improper installation	55th-56th	SC Vol. 30, No. 2, p. 7
Plastic Parts, Tar Remover Damage to dulled lens - alternate solvents	24th-54th; (55th-56th)	SC Vol. 28, No. 9, p. 55
Plenum Chamber Carpet additional part for dealer installation	56th	SC Vol. 29, No. 12, p. 66
Power Brakes, Easamatic: Hard Pedal new type vacuum piston - conversion kit	55th	STB 55T-28 (Zones only)
Power Brakes, Easamatic: Vacuum Check Valve hard pedal - new type with stop washer	56th	SC Vol. 30, No. 2, p. 7
Power Seat Actuator Pin Tool suggested tool - fabrication	55th-56th	SC Vol. 30, No. 2, p. 8
Power Steering Cylinder Seal Kit, Bendix leaks - proper installation	55th-56th	SC Vol. 30, No. 8, p. 32
Power Steering Pump Pressure Gauge Fittings special tools	55th	SC Vol. 29, No. 6, p. 34
Power Steering Pump Reservoir Cap improved type - same number	55th-56th	SSB No. 319, p. 6
Power Steering Pump Reservoir Dip Stick breaks loose, cap leaks - discontinued, cap redesigned	55th	SC Vol. 29, No. 8, p. 41
Power Steering Pumps Bendix vs. Monroe - identification, do not interchange	55th	SC Vol. 29, No. 4, p. 24
Power Steering Recovery too slow - binding nylon spacer	55th-56th	SC Vol. 30, No. 2, p. 7
Power Steering, Binding (Bendix) ball stud adjustment	25th-54th; 55th-56th	STB 55T-38, Dealer 29
Pressure Test Plug, (Front) Pump production change - fabricate test adapter	55th	SC Vol. 29, No. 3, p. 20
Push Button Control: (actuator-to-manual shaft set screw) superseded part	56th	SSB No. 350, p. 8
Push Button Control: (malfunctions) checks, adjustments, and precautions	56th	SSB No. 327, p. 6
Push Button Control: Actuator Shaft (set) Screw accessibility - new Allen head design	56th	SC Vol. 30, No. 7, p. 27
Push Button Control: Adjusting Actuator-to-Transmission Control Valve Detent loss/delay of high range - special procedure	56th	SSB No. 338, p. 3
Push Button Control: Armature Test special methods	56th	STB 56T-26, Dealer 20
Push Button Control: Bent Actuator Fingers overtravel - straightening	56th	SC Vol. 30, No. 3, p. 12
Push Button Control: Circuit Breaker superseded part - modification	56th	SSB No. 351, p. 3
Push Button Control: Inoperative overtravel, finger damage - rework contact segment	56th	SSB No. 322, p. 4
Push Button Control: Left-Side Conversion driver accessibility issues	56th	SC Vol. 30, No. 6, p. 23
Push Button Control: Light Leak at control buttons - felt mask	56th	SC Vol. 30, No. 1, p. 3
Push Button Control: Pressure Switch water leak/shorts - relocation	56th	SC Vol. 30, No. 2, p. 8
Push Button Control: Push Button Type Control preliminary information/service	56th	SC Vol. 29, No. 11, p. 55
Push Button Control: Relay Water Trough water leak/shorts	56th	SC Vol. 30, No. 1, p. 3
Push Button Control: Removal of Automatic Park Relay pawl damage	56th	STB 56T-25 (Zones only)
Push Button Control: Removal of Control Relay redundant part	56th	SC Vol. 30, No. 1, p. 2
Push Button Control: Retaining Clip (Switch Actuator) new service part	56th	SSB No. 324, p. 4
Push Button Control: Supplement Automatic Park Relay added	56th	SC Vol. 29, No. 12, p. 62
Push Button Control: Towing Instructions precautions	56th	STB 55T-46, Dealer 37
Push Button Control: Towing, Road Testing and (CORRECTED) precautions	56th	STB 56T-4C, Dealer 3
Push Button Control: Towing, Road Testing and precautions	56th	STB 56T-4, Dealer 3
Push Button Control: Vent actuator - condensation and oil	56th	SSB No. 322, p. 4
Push Button Control: Water in Actuator leaks at wires	56th	SC Vol. 30, No. 6, p. 22
Radiator - Packard Rust Preventive Information	(not specified)	Trade Letter No. 2846
Radiator Grille Emblem Base superseded part	5540-60	SC Vol. 30, No. 9, p. 36
Radiator Grille Noise (CORRECTED) whistle/hum - baffles, anti-rattle bumper installation	5640-60	STB 56T-5C, Dealer 4
Radiator Grille Noise whistle/hum - baffles	5640-60	STB 56T-5, Dealer 4
Radiator Inlet Hose Collapsing reinforcing spring missing - service part	55th-56th	SSB No. 331, p. 6
Radiator Inlet Hose Reinforcing Spring superseded part	55th-56th	SSB No. 337, p. 6
Radio Bonding Clips electrical interference - installation	55th	SC Vol. 29, No. 7, p. 38
Rattle (converter) loose direct drive pressure plate screws - replace and/or retorque	55th; (56th)	STB 55T-40, Dealer 31
Rear Brake Wear premature wear - improved drums, adjustments reiterated	5640-60-70	SSB No. 344, p. 4
Rear Brake Wear, Premature - Overheating hand brake adjustment	5640-60	STB 56T-22, Dealer 19
Rear Brakes premature wear/grab - smaller wheel cylinders	5640-60	STB 56T-24 (Zones only)
Rear Cigar Lighters incorrect bases - replacement	5582-87	STB 55T-14, Dealer 12
Rear Cross Bearing Bolt Lockwashers incorrectly installed	55th	SC Vol. 29, No. 4, p. 26
Rear Fender Joint Moulding Cover - Painted now plain steel - do not strip	5540-60	SC Vol. 29, No. 3, p. 22
Rear Main Bearing Oil Leaks notching for drainage	55th	SC Vol. 29, No. 4, p. 26
Rear Oil Pump Driver premature wear - hardened	54th-55th-56th	STB 55T-47, Dealer 38
Rear Oil Pump Driver premature wear - redesigned	54th-55th-56th	SC Vol. 30, No. 1, p. 4
Rear Oil Pump Driver premature wear - redesigned	54th-55th-56th	STB 56T-9, Dealer 7
Rear Oil Pump Rotor Sets cost savings - new kits	54th-55th-56th	SC Vol. 30, No. 3, p. 11
Rear Wheel Hub Clicks axle shafts - correcting taper	55th	SC Vol. 29, No. 9, p. 46
Rear Window Outside Trim Plates rust/tarnish from buffing residue - clean up	56th	STB 55T-51, Dealer 42
Reinforcement and Modifications to Handle Trailers towing - hitches and lifts	55th	STB 55T-27, Dealer 20
Rocker Lever Identification right vs. left hand	55th	SC Vol. 29, No. 5, p. 28
Rocker Lever Shaft Holes - New Shafts noisy - holes reinstated, smaller	55th	STB 55T-35, Dealer 26
Rocker Lever Shaft Holes - Oil Control oil consumption - holes eliminated	55th	STB 55T-16, Dealer 14
Rocker Levers superseded parts - instructions for return/exchange of stock	55th-56th	P&A Letter to Dealers, Mar. 14, 1956
Rough Engines reporting balancing numbers	55th	STB 55T-23 (Zones only)
Rough Idle - Carter 4-Barrel secondary return spring tension	5660	SC Vol. 29, No. 12, p. 65
Script Name Plate Kit, Packard Clipper trunk lid, reinstated in production - available for service	5640-60	Letter to Dealers, Apr. 13, 1956
Seat Back Falls Forward, Caribbean inertia - ball stud and spring added	56th	SC Vol. 30, No. 5, p. 19
Seat Cushion Location Delivery Inspection	(Not Specified)	SL Vol.8, No. 24
Seat Cushions and Seat Backs, Front - Early Production 56th Series Caribbean too firm - lower density foam available	5688	STB 56T-13, Dealer 10
Selector Lever Stops no stops - wrong lever	55th-56th	SC Vol. 29, No. 12, p. 66
Service Kit hum/vibration	55th	STB 55T-45, Dealer 36
Service Manual - Electrical Section (Correction) polarizing generator	55th	SC Vol. 29, No. 10, p. 54
Service Manual Corrections - Engine Section bore/stroke specifications	55th	SC Vol. 29, No. 8, p. 41
Servicing Compressors individual parts, not assemblies	55th-56th	STB 56T-16, Dealer 13
Shift Pattern operating information	55th	STB 55T-6, Dealer 5
Shift Pattern, Earlier upshift modification	5640-60	SC Vol. 30, No. 7, p. 27
Shock Absorber Bracket, Rear Axle Torque Arm and superseded part	55th	SSB No. 340, p. 4
Shock Absorber Grommet Spacer, Rear squeaking - excessive end play	56th	SC Vol. 30, No. 5, p. 20
Shock Absorbers - Export bottoming - heavy-duty type available	55th	STB 55T-42, Dealer 33
Sleeve, Shaft Levers-to-Transmission Extension Lever Rod superseded part	55th-56th	SSB No., 360, p. 7
Spark Plug Plug Identification and Model Application Chart	(see chart)	PAB 48P-6
Spark Plug Failures fouling - diagnosis	55th-56th	SC Vol. 30, No. 6, p. 22
Spark Plug Fouling cold - hotter plug available	55th	SC Vol. 29, No. 8, p. 41
Spark Plug Terminal Insulators Accessory Spark Plug Boots	Models with 10mm plugs	PAB 48P-25
Spark Plugs superseded part	55th-56th; 56J	SSB No. 355, p. 1
Stabilizer Bushing Retainer Clip Installer, J-4654 service procedure clarified	24th; (25th-56th)	SC Vol. 25, No. 7, p. 25
Stained Headlining stitching bleed-through - new type insulation	5540-60	STB 55T-30, Dealer 21
Stained Headlining supplement - alternate adhesive	5540-60	STB 55T-44, Dealer 35
Stall On Left Turns - Carter 4-Barrel internal leak - vacuum passage bushing	5660	SC Vol. 30, No. 9, p. 36
Starter Motor Pinion Adjustment excessive wear - correct procedure	56th	SC Vol. 30, No. 7, p. 27
Starter Solenoids, Delco water leaks - sealing	56th	SC Vol. 30, No. 4, p. 15
Starting - Cold Weather Proper Procedure	(Not Specified)	SL Vol.8, No. 24
Steering Cross Bars and Sockets Assemblies interchangeable parts	22nd-56th	SSB No. 348, p. 7
Steering Flange - Except Push Button Control superseded part	56th	SSB No. 355, p. 7
Steering Knuckle Bearing Shims, Front Wheel superseded parts	22nd-56th	SSB No. 348, p. 8
Steering Knuckle Supports superseded parts	22nd-56th	SSB No. 350, p. 7
Stop Light Switch - Torsion Level Suspension removal - socket size	55th-56th	SSB No. 328, p. 5
Support Arm Bushing Torque Specifications, Front - Additions inner, upper and lower	55th	SC Vol. 29, No. 8, p. 41
Support Arm Pivot Pins and Bushings, Front rattles - revised part	55th	SC Vol. 29, No. 7, p. 36
Tail Lamp Lens Distortion heat lamp abuse	(24th-55th); 56th	SC Vol. 30, No. 9, p. 34
Tail Light Cable and Sockets service parts for harness	56th	SC Vol. 30, No. 8, p. 32
Throttle Control Rod bent - length data	24th-55th	SC Vol. 29, No. 4, p. 26
Throttle Control Rod Adjustment bent - rod length data	24th-55th	SSB No. 340, p. 7
Throttle Control Rod Adjustment supplemental rod length data	56th	SSB No. 344, p. 4
Throttle Control Shaft Lever Extension Kit, Carburetor unwanted kickdown - revised geometry	55th	SC Vol. 29, No. 7, p. 36
Throttle Control Shaft Lever Extension, Carburetor application extended to early 56th	55th-56th	SC Vol. 29, No. 12, p. 65
Throttle Linkage Adjustment (Caribbean Carburetors) new model information	5588	SC Vol. 29, No. 6, p. 32
Throttle Linkage Adjustment Training Book correction	55th	SC Vol. 29, No. 6, p. 34
Throttle Linkage Adjustments supplement - corrections/variations	54th-55th-56th	SSB No. 340, p. 7
Throttle Linkage Ball Joints falling off - service damage	55th-56th	SC Vol. 30, No. 3, p. 12
Throttle Linkage, Adjusting (Accelerator) shift point	56th	SC Vol. 30, No. 5, p. 18
Tire Thump proper diagnosis - other causes	(all models)	SC Vol. 27, No. 6, p. 30
Torque Specification Change (Twin Ultramatic) universal joint flange bolt	55th	SC Vol. 29, No. 8, p. 41
Torque Specification Change universal joint flange bolt	55th	SC Vol. 29, No. 8, p. 41
Torque Specifications - Additions front support arm inner bushings, upper/lower	55th	SC Vol. 29, No. 8, p. 41
Torque Specifications - Additions front wheel bearing and 56th rear axle pinion	55th-56th	SC Vol. 30, No. 8, p. 32
Torque Specifications - Suspension Additions front support arm inner bushings, upper/lower	55th	SC Vol. 29, No. 8, p. 41
Torque Specifications new model information	55th	STB 55T-8, Dealer 7
Torsion-Level Suspension - see also: ELECTRICAL	--	--
Torsion-Level Suspension: Cautions delivery and service	55th	STB 54T-19, Dealer 9
Torsion-Level Suspension: Control Switch compensator - external shorts	56th	SC Vol. 30, No. 4, p. 14
Torsion-Level Suspension: Control Switch compensator superseded - jumper harness required	55th	SC Vol. 30, No. 6, p. 22
Torsion-Level Suspension: Control Switch compensator superseded - jumper harness required	55th	SSB No. 319, p. 6
Torsion-Level Suspension: Control Switch jumper harness - wire connections	55th	SSB No. 324, p. 4
Torsion-Level Suspension: Erratic Action loose support arm inner bushing nuts - compensator nuts	55th-56th	SSB No. 325, p. 5
Torsion-Level Suspension: Limit Switch and Compensator Motor overtravel, excessive current draw - diagnosis, new limit switch	55th	STB 55T-2, Dealer 2
Torsion-Level Suspension: Limit Switch Wiring Guard stone damage - fabrication	56th	SC Vol. 30, No. 2, p. 8
Torsion-Level Suspension: Load Arm Ball Stud and Seats snapping noise - new type	56th	SC Vol. 30, No. 1, p. 4
Torsion-Level Suspension: Load Arm Snap noise - ball studs/seats redesigned, alternate unloading procedure	55th	STB 55T-37, Dealer 28
Torsion-Level Suspension: Load Compensator - Service Procedure testing - raise/lower with jumper wire	56th	SC Vol. 29, No. 12, p. 66
Torsion-Level Suspension: Load Compensator - Testing Procedures raise/lower with jumper wire	55th	SC Vol. 29, No. 3, p. 21
Torsion-Level Suspension: Load Compensator parts identification and assembly	55th	SC Vol. 29, No. 4, p. 23
Torsion-Level Suspension: Load Compensator Lever Identification uneven riding height, side-to-side - visual inspection	55th	SC Vol. 29, No. 3, p. 22
Torsion-Level Suspension: Long Torsion Bars (9-degree) replacements in pairs - jounce bumper clearance	55th-56th	SSB No. 320, p. 7
Torsion-Level Suspension: Long Torsion Bars, 9-degree bottoming - re-indexed hexes	5580; 5680-88	STB 56T-1 (Zones only)
Torsion-Level Suspension: Manual Control Kit bottoming on approach - driver override	56th	SC Vol. 30, No. 7, p. 28
Torsion-Level Suspension: Rear Load Arm Links unseated - retaining pin added	55th	STB 55T-18 (Zones only)
Torsion-Level Suspension: Solenoids inoperative - waterproofing	56th	STB 55T-50, Dealer 41
Torsion-Level Suspension: Stop Light Switch removal - socket size	55th-56th	SSB No. 328, p. 5
Torsion-Level Suspension: Switches Waterproofed shorts - replace and waterproof individual switches	55th	STB 55T-36, Dealer 27
Torsion-Level Suspension: Uneven Riding Height fore-to-aft - adjustment, dash switch wire no longer disconnected for shipping	56th	STB 55T-53, Dealer 44
Torsion-Level Suspension: Uneven Riding Height side-to-side - diagnosis, replacement links	55th	STB 55T-1, Dealer 1
Torsion-Level Suspension: Wire Disconnected dash control switch - for shipping	55th	STB 55T-13, Dealer 11
Torsion-Level Suspension: Worm Shaft Lock Ring motor turns, but not lowering - inspection and replacement	55th	STB 55T-12, Dealer 10
Transmission - Caribbean replacement - important differences	5588	SC Vol. 29, No. 9, p. 45
Transmission Fluid, Twin Ultramatic - Correction fluid identification number	55th	SC Vol. 29, No. 10, p. 54
Transmission Fluid, Ultramatic improved type - anti-friction qualities, cold-weather perfomance	55th	SC Vol. 29, No. 8, p. 41
Transmission Hoist Special Tool ST-844	All Models	SL Vol.7, No. 18
Transmission Replacement - Caribbean important differences	5588	STB 55T-20, Dealer 17
Transmissions, Service - Stripped shipped less bell housing	54th-55th	SC Vol. 29, No. 7, p. 37
Trunk Compartment Light staying on - adjustment	56th	SC Vol. 30, No. 4, p. 16
Trunk Lid Lock new model - servicing	5680	SC Vol. 29, No. 12, p. 61
Trunk Lock latch - superseded part	56th	SSB No. 350, p. 8
Trunk Lock Plate unlatching - new part, adjustment	56th	SC Vol. 30, No. 4, p. 15
Twin Traction Differential Filler Plug Interference carrier/case - rework end	56th	SSB No. 319, p. 6
Twin Traction Differential, Servicing operating characteristics, pinion adjustment, service replacement units	56th	STB 56T-8, Dealer 6
Twin Traction Safety Differential preliminary information	56th	SC Vol. 30, No. 4, p. 13
Universal Joint Flange Bolt click, loosening - new type	54th-55th	SC Vol. 29, No. 9, p. 46
Universal Joint Flange Bolt click, loosening - new type	54th-55th	STB 55T-4, Dealer 4
Valve Spring Baffles (Part Number - Correction) rocker shaft bolt lockwasher	55th-56th	SC Vol. 30, No. 5, p. 20
Valve Spring Baffles oil consumption - new part	55th-56th	SC Vol. 30, No. 1, p. 1
Valve Spring Retainers spring seats - new harder type	55th-56th; 56J	SSB No. 325, p. 1
Valve Spring Seat, Intake retainer - new harder type	56th	SC Vol. 30, No. 7, p. 26
Valve Spring Tool new special tool - in-car removal	55th	SC Vol. 29, No. 5, p. 28
Vibration Period 58-62 M.P.H. (CORRECTED) driveline angle - shimming axle, suspension adjustment, alternate ratio	5580; 5680	STB 56T-10C, Dealer 8
Vibration Period 58-62 M.P.H. driveline angle - shimming axle, alternate ratio	5580; 5680	STB 56T-10, Dealer 8
Water Pumps, Noisy growl - seal lubrication, use of rust inhibitor	55th-56th	SSB No. 340, p. 2
Weatherstrip, Door Roof Rail - Hard-Tops water leaks, wind noise - supplemental part	56th	SC Vol. 30, No. 9, p. 33
Weatherstrip, Hinge Type (door roof rail) service springs/striker - 55th assemblies superseded	55th-56th	SSB No. 331, p. 6
Weatherstrip, Windshield Pillar Post new type	55th	SC Vol. 29, No. 8, p. 40
Wheel Disc Plugs debris in wheel covers - new part	55th	SC Vol. 29, No. 9, p. 46
Window Lift Motor Kits, Electric incorrectly packaged	55th-56th	SSB No. 359, p. 5
Window Lift Motor Kits, Electric superseded part - modifications required	55th-56th	SSB No. 356, p. 5
Window Regulator Assembly electric - group number correction	5522; 5622	SSB No. 322, p. 3
Window Regulator Assembly electric - with arm and bracket	55th-56th	SSB No. 320, p. 7
Window Shaft and Pinion, Electric loose - new, one-piece type	55th	SC Vol. 29, No. 8, p. 40
Windshield Glass Squeaks creeps out of weatherstrip - use of sealant	55th	SC Vol. 29, No. 8, p. 42
Windshield Moulding Upper Cover Joint broken stud - new type, same number	56th	SC Vol. 30, No. 4, p. 16
Windshield Washer Cover & Pump Assembly service part	55th-56th	SSB No. 322, p. 3
Windshield Weatherstrip and Moulding Retainers glass drops out at top - install lower retainers	55th	STB 55T-10, Dealer 9
Windshield Weatherstrip Retainer glass drops out at top with revised weatherstrip - alternate lower retainers	55th	STB 55T-34, Dealer 25
Windshield Wiper: Dual Speed Wipers malfunction/hissing - hoses reversed	55th	SC Vol. 29, No. 5, p. 30
Windshield Wiper: Lubricating Motors vacuum type - maintenance procedure	22nd-23rd; (24th-56th)	SC Vol. 23, No. 10, p. 52
Windshield Wiper: Wiper Arms servicing	55th	SC Vol. 29, No. 4, p. 25
Windshield Wiper: Wiper Arms/Blades - Correction part numbers	56th	SC Vol. 30, No. 7, p. 27
Windshield Wiper: Wiper Arms/Blades unsatisfactory wiping - redesigned	56th	SC Vol. 30, No. 4, p. 15
Wiring Diagrams new model information	55th	SC Vol. 29, No. 1, p. 10A
Wiring Diagrams new model information	56th	SC Vol. 29, No. 13, p. 11

SC = Service Counselor

SL = Service Letter

STB = Service Technical Bulletin

SSB = Studebaker Service Bulletin

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