Factory Service Index - Packard Motor Car Information

An Index to Service Information for 1935-37 Junior (120->115C) Packards

1935-37 Junior (120->115C) - ENGINE

MAIN SERVICE INDEX -> 1935-37 JUNIOR (120->115C) -> ENGINE

Subject	Application	Document
Air Cleaner - see: FUEL & EXHAUST
Air Cleaners, Clean All oil filler tube cap - crankcase ventilation	120	SL Vol. 9, No. 11
Bearing Clearance, Main and Rod noise, vibrations - identification, measurement	(not specified)	SC Vol. 25, No. 6, p. 22
Bearing Replacements, Connecting Rod unnecessary replacement - limitation order, guidelines	(not specified)	SC Vol. 18, No. 2
Bearing Sets, Main now available - cost-savings	120-138CD; 115C; 1600-1-2; 1700-1-2	SL Vol. 13, No. 9
Bearing Shells, Connecting Rod new larger bearings/rods - machine older rods to fit	120-138CD; 115C; 1600-1; 1700-1-1A	SC Vol. 18, No. 5
Bearing Shells, Note on rod/main bright or dull - no effect	(not specified)	SC Vol. 23, No. 4, p. 19
Bearings Measured Quickly, Rod and Main new Plastigage Kit - proper use	(not specified)	SC Vol. 22, No. 8, p. 31
Bearings, Connecting Rod rod no longer supplied, use 17th Series - identification, precautions	120C-138CD; 115C; 1600-1-1A	SL Vol. 13, No. 9
Bearings, Undersize Crankshaft material shortage - crankshaft regrinding	(not specified)	SC Vol. 18, No. 6
Break-In Period refrain from full power operation - limit speed	(all models)	SL Vol. 9, No. 6
Camshaft Removing procedure - required tools	120	SL Vol. 9, No. 12
Carbon Rattle piston carbon deposits striking head - use of additional head gasket	(not specified)	SL Vol. 17, No. 18
Carburetor - see: FUEL & EXHAUST
Connecting Rod and Cap Assembly assembly orientation - crankshaft position	120C-138CD; 115C; 1600-1-1A-1D; 1700-1-1A-2; 18th-20th	SC Vol. 19, No. 2
Connecting Rod Bearings undersize - markings, identification	12th; 120	SL Vol. 9, No. 6
Cylinder and Piston Assemblies Available short block less crankshaft - back in stock	1203-4-5; 1403-4-5; 120-138CD; 115C; 1600-1-1A-1D-2; 1700-1-1A-2; 18th-21st	SC Vol. 21, No. 14, p. 68
Cylinder and Piston Assembly, Motor - Parts Men Note still available	115C	SC Vol. 23, No. 6, p. 34
Cylinder Head Corrosion aluminum - checks, maintenance, precautions	12th-14th; 120-138CD; 115C; 15th-16th; 1707-8	SL Vol. 12, No. 7
Cylinder Head Gasket installed incorrectly - water bypass hole	120	SL Vol. 9, No. 7
Cylinder Head Gasket Seal precoated - part reference	7th-14th 120-138CD 115C 15th-16th 1700-1-2-3-5	SL Vol. 13, No. 3
Cylinder Head Gasket Seal precoated - part reference	7th-14th; 120-138CD; 115C; 15th-16th; 1700-1-2-3-5	SL Vol. 13, No. 3
Cylinder Head Gaskets overheating - water passage blocked by sealing film	(not specified)	SL Vol. 14, No. 1
Cylinder Head Gaskets wartime shortage - re-use, precautions	(all models)	SL Vol. 16, No. 11
Cylinder Head Nuts, Tighten head failures/leaks, oil consumption - proper replacement, torque-tightening	(all models)	SL Vol. 12, No. 6
Cylinder Head Nuts, Tightening oil consumption, poor economy/performance, cracked heads - tensioning wrench, procedure	(all models)	SL Vol. 11, No. 4
Cylinder Head Studs oversize threads, water jacket seal - identification, sealing paste	All Models	SL Vol. 13, No. 9
Cylinder Head Tension Wrench proper tightening reiterated - alternate special tools	(all models)	SL Vol. 12, No. 22
Cylinder Heads new cast-iron, 1701 type - 14mm plug holes for high oil consumption	120-138CD	SL Vol. 12, No. 24
Cylinder Heads return to cast-iron, gasket usage - replaces aluminum heads, drill new water passages	120-138CD; 1601-1A-2-3-4-5; 1701-1A-2-3-3A-5	SL Vol. 12, No. 19
Cylinder Heads use of 18th Series heads - spark plugs hole size; water outlet adaptation	120-138CD; 115C	SL Vol. 13, No. 20
Cylinder Heads, Ordering high compression, superseded part - order flange and other details separately	120C-138CD; 1601-2; 1701-2	SC Vol. 21, No. 5, p. 18
Cylinder Heads, Return Bolts Shipped with bundled for shipping - steel shortage	(all models)	SC Vol. 21, No. 7, p. 30
Cylinder Repairs sand hole, shrinkage cracks - Wonder Weld	(all models)	SL Vol. 9, No. 24
Cylinder Repairs small holes/cracks - repair compounds	(all models)	SC Vol. 25, No. 4, p. 16
Cylinders and Valves, Rusted moving stored vehicles - preparations for starting	(all models)	SL Vol. 12, No. 7
Cylinders, Oversized used in production - identification	120	SL Vol. 9, No. 14
Detonation, What to do About carbon formation, fuel octane - checks and adjustments, cleaning	(all models)	SL Vol. 11, No. 4
Distributor - see: ELECTRICAL
Engine and Adapter Kit, Six Cylinder Replacement now in-stock for Electromatic and prior to 19th - new crankcase ventilator kits	115C; 1600; 1700; 1800; 1900; 2000-10-20-30; 2100-30	SC Vol. 22, No. 3, p. 11
Engine Replacement, Six Cylinder - Correction standard passenger cars - engine part number	115C; 1600; 1700; 1800; 1900; 2000-10-20; 2100	SC Vol. 21, No. 17, p. 82
Engine Replacement, Six Cylinder new improved design services all models - alterations required	115C; 1600; 1700; 1800; 1900; 2000-10-20-30; 2100-30	SC Vol. 21, No. 13, p. 63
Engine Replacement Retrofitting a 288 into a 120-C	120C	GSL 49-58
Engine Stand and Dolly new tools - six/eight-cylinder	(not specified)	SC Vol. 19, No. 5
Engine Stand Price supplier increase	(not specified)	SC Vol. 21, No. 7, p. 32
Engine Vibration Different Causes of Vibration	(not specified)	SL Vol. 2, No. 8
Engine, Prelubricate Replacement oiling cylinder walls - break-in	(all models)	SC Vol. 20, No. 8
Engines, Installing Replacement alterations for accessories/controls - labor times	120-138CD; 115C	SC Vol. 20, No. 6
Factory Replacment Engines Update, Modfications	110, 115-C, 120	PAB 45P-8
Fan Belt - see: RADIATOR & COOLING
Flywheel Housing Covers cast design replaces stamped steel	120-138CD; 115C; 1600-1-1A-1D-2; 1700-1-1A-2; 1800-1-1A; 1900-1-1A; 1951; 2000-01-11-10-20-21-30; 2100-01-11-30	SC Vol. 21, No. 7, p. 30
Flywheel Timing Mark redesigned for simpler service	120	SL Vol. 9, No. 9
Front End (Timing) Chain installation - timing marks	120	SL Vol. 9, No. 13
Generator - see: ELECTRICAL
Heat Control Valve, Manifold - see: FUEL & EXHAUST	--	--
Idle, Motor poor quality - ignition/carburetor adjustments	120	SL Vol. 9, No. 7
Idle, Motor revised spark plug gap - check idle speed	120	SL Vol. 9, No. 15
Ignition - see: ELECTRICAL
Manifold Gasket Failures chafing - chamfer manifold edges	(all models)	SC Vol. 25, No. 12, p. 47
Manifold Gasket Leaks, Intake rough idle - improper tightening, detection	(all models)	SC Vol. 23, No. 7, p. 39
Manifold Gaskets, Exhaust order in sets only - superseded parts	120-138CD; 1601-1-1A-1D; 1701-1A; 1801-1A; 1803-3A-4-5-6-7-8	SL Vol. 14, No. 11
Miss, Low Speed incorrect coil polarity, identification - manifold heat valve sticking, motor tuning	120C	SL Vol. 11, No. 1
Motor - Short Cuts on Service Operations removal form bottom - leaving front sheet metal in place	120	SL Vol. 9, No. 10
Motor Disturbance normal bearing noise resonated - flywheel pan insulation	120C; 115C	SL Vol. 11, No. 8
Motor Numbers - Parts Orders prefix also required	120-120C; 115C	SL Vol. 10, No. 22
Motor Oil New Recommendations	(Not Specified)	SL Vol.7, No. 18
Motor Period torsional disturbance - clutch/transmission jazz	(not specified)	SC Vol. 18, No. 3
Oil Consumption vacuum booster pump diaphragm leak explained - additional models	120-120C; 115C	SL Vol. 11, No. 4
Oil Consumption vacuum booster pump diaphragm leaking - checks, replacement interval	120-120B	SL Vol. 10, No. 15
Oil Filter - Purolator product information - added protection	120	SL Vol. 9, No. 9
Oil Filter Cartridge - Change Period Revised high-detergents oils - reduced	120-138CD; 115C; 16th?-54th	STB 54T-12, Dealer 7
Oil Filter Cartridge Change Period Revised high detergent oil - reduced interval	120-138CD; 115C; 16th?-54th	SC Vol. 28, No. 10, p. 60
Oil Filter Connections, Purolator loose bracket - leaky unions, pipe failure	(not specified)	SL Vol. 16, No. 13
Oil For Sub-Zero Operation, Winter Engine new 5-W oil - issues, limited availability/use	(all models)	STB 49T-40 (Zones only)
Oil Leaks, Front Cover excessive oil consumption - checks/corrections/precautions	(not specified)	SL Vol. 16, No. 11
Oil Level, Engine revised level, new stick - remarking old sticks	120-120C; 115C	SL Vol. 11, No. 6
Oil Pan Gasket Sets replace RH-LH, together - available in sets	120-138CD; 115C; 1600-1-1A-1D-2; 1700-1-1A-2; 18th-22nd; (23rd54th)	SC Vol. 22, No. 7, p. 26
Oil Pan, Motor standard pan shortage - Clipper pan retrofit, indicator calibration	120-138CD; 1601-2; 1701-2; 1801-1A; 1901-1A	SL Vol. 17, No. 11
Oil Pressure, Low pan sludge, clogged pickup - cleaning procedure	(not specified)	SC Vol. 18, No. 7
Oil Pump and Distributor Shaft Aligning Tool new special tool - instructions	120-120B	SL Vol. 10, No. 14
Oil Pump Camshaft Gear sheared drive gear pin, rust - use of thicker drive spring	120-138CD; 115C; 1600-1; 1700-1-2; 1800-1-3-4-5-6-7-8; 19th-20th	SC Vol. 18, No. 10
Oil Pump Check Valve sticking, pressure drop - new longer spring, undersize ball	120	SL Vol. 9, No. 7
Oil Seal, Gear Cover burned, leaking - graphite grease	120-138CD; 115C; 16th-54th	SC Vol. 25, No. 9, p. 35
Oil Seal, Rear Main Bearing leaks - preventative measures	120-138CD; 115C; 16th-18th (exc. 1703-3A-5); 1951; 2000-01-03-06-10-11; 21st; 22nd-24th; (25th-54th)	SC Vol. 25, No. 9, p. 36
Oil Seal, Rear Main Bearing leaks - undersize	120-138CD; 115C; 16th-18th (exc. 1703-3A-5); 1951; 2000-01-03-06-10-11; 21st; 22nd-54th	SC Vol. 28, No. 1, p. 3
Oil Seal, Rear Main Bearing leaks, bearing distortion - new cork type, installation	120-138CD; 115C; 16th-18th (exc. 1703-3A-5); 1951; 2000-01-03-06-10-11; 21st; 22nd-54th	SC Vol. 28, No. 9, p. 55
Oil, Rust Inhibiting motors in storage - limited availability, alternate sourcing	(not specified)	SL Vol. 16, No. 19
Oils, Graphited no cost/benefit advantage	(all models)	SL Vol. 9, No. 12
Perfect Seal - Gasket Paste non-hardening sealant - head gaskets, additional applications	(not specified)	SL Vol. 10, No. 8
Perfect Seal Gasket Paste additional size - applicator kit required	(not specified)	SL Vol. 10, No. 14
Piston and Rings, Replacement latest type used for earlier models - check replacement chart for rings only	9th-14th 120-138CD 115C 15th-20th	SC Vol. 21, No. 1, p. 3
Piston and Rings, Replacement latest type used for earlier models - check replacement chart for rings only	9th-14th; 120-138CD; 115C; 15th-20th	SC Vol. 21, No. 1, p. 3
Piston Oversize Diameters revised specification, skirt clearance reduced - size reference	?1st-14th 120-138CD 115C 15th-16th	SL Vol. 12, No. 11
Piston Oversize Diameters revised specification, skirt clearance reduced - size reference	?1st-14th; 120-138CD; 115C; 15th-16th	SL Vol. 12, No. 11
Piston Oversize Diameters revised specification, variation reduced - size reference	?1st-14th 120-138CD 115C 15th-17th	SL Vol. 13, No. 11
Piston Oversize Diameters revised specification, variation reduced - size reference	?1st-14th; 120-138CD; 115C; 15th-17th	SL Vol. 13, No. 11
Piston Pin - Parts Book Correction part number error	120-120C; 115C	SL Vol. 11, No. 13
Piston Pin Bushings two-piece, split-type - oil groove, burnishing procedure	120-138CD; 115C; 1600-1-1A-1D-2-3-4-5; 1700-1-1A-2-3-3A-5; 18th-20th	SC Vol. 20, No. 1
Piston Ring Sets part number correction	120B	SC Vol. 21, No. 1, p. 2
Piston Ring Sets Perfect Circle - ordering	(all models)	SC Vol. 19, No. 6
Piston Ring Sets X-90 type now available - part reference	120-120B	SL Vol. 11, No. 14
Piston Rings and Expanders ample supply for spring season repairs	(not specified)	SC Vol. 21, No. 7, p. 32
Piston Rings, Carbonized oil consumption, low speed, cold weather - oil changes, cleaning procedure	(all models)	SC Vol. 18, No. 2
Piston Rings, Selling and Installing Perfect Circle ring groove combinations - use of selection chart	9th-14th 120-138CD 115C 15th-20th	SC Vol. 19, No. 7
Piston Rings, Selling and Installing Perfect Circle ring groove combinations - use of selection chart	9th-14th; 120-138CD; 115C; 15th-20th	SC Vol. 19, No. 7
Piston Sizes identification - reference chart	120-120B	SL Vol. 9, No. 22
Piston Slap tight pins, shrunken pistons - cold weather, normal condition	(not specified)	SL Vol. 10, No. 4
Piston, Pin and Ring Oversize Marking, Motor identification - size/color reference	(all models)	SL Vol. 9, No. 4
Pistons, Oversize Marking on formerly paint, now stamped - prior chart obsolete	120C-138CD; 115C; 15th	SL Vol. 11, No. 10
Power, L-Head vs. Valve-In-Head higher torque/HP - detonation	(all models)	SL Vol. 10, No. 20
Radiator Shell Ornament Wrench new special tool - also for rear camshaft bearing plate	120B	SL Vol. 9, No. 20
Scientific Equipment and Data in Diagnosing Service Complaints, Use of over-all motor check-up - starting/charging, carburetion	(all models)	SL Vol. 9, No. 22
Sludge, Crankcase driving speed reductions, condensation, bearing trouble - operating temperatures, oil changes	(all models)	SL Vol. 17, No. 19
Sludge, Engine cleaning oil pan/screen - engine flushing	(all models)	SL Vol. 14, No. 10
Starter - see: ELECTRICAL
Starting - Cold Weather Proper Procedure	(Not Specified)	SL Vol.8, No. 24
Stud Remover and Driver new special tool - cylinder head studs	(all models)	SL Vol. 13, No. 5
Tappet Hole Reamer new special tool - oversize tappets, procedure	120	SL Vol. 9, No. 13
Tune-Up, General Motor poor economy, carbon build-up, burnt valves/plugs/points - standard procedure	120	SL Vol. 10, No. 2
Valve Grinding unnecessary - proper carbon removal	120B	SL Vol. 10, No. 16
Valve Lifter new special tool - operation	120	SL Vol. 9, No. 10
Valve Seats, Checking run-out, uneven wear - use of dial indicator	(all models)	SC Vol. 22, No. 10, p. 39
Valve Spring Load reduced by cutting seats - shimming, precautions	(not specified)	SL Vol. 17, No. 9
Valve Springs broken - water leakage, corrosion	(not specified)	SL Vol. 10, No. 6
Valve Springs, Weak sticking valves - shimming	(not specified)	SL Vol. 15, No. 9
Valve Tappet Adjustment minimum clearance - valve spring shim	120	SL Vol. 9, No. 23
Valve Tappet Adjustment scored push rod - exhaust clearance increased	120	SL Vol. 9, No. 8
Valve Timing specifications reference	900-1-2-3-4 10th-14th (exc. Twelves) 120-138CD 115C 15th-19th 2000-1-3-3A-4-5-6-7-8-20-21-23	SL Vol. 16, No. 7
Valve Timing specifications reference	900-1-2-3-4; 10th-14th (exc. Twelves); 120-138CD; 115C; 15th-19th; 2000-1-3-3A-4-5-6-7-8-20-21-23	SL Vol. 16, No. 7
Valve Wrench - Tool Suggestion improvement - stops slipping	(not specified)	SL Vol. 12, No. 17
Valves and Car Storage, Sticky running motors, internal rust - cylinder oiling, battery removal/charging	(all models)	SL Vol. 14, No. 4
Valves, Rusted Cylinders and moving stored vehicles - preparations for starting	(all models)	SL Vol. 12, No. 7
Valves, Sticking carbon, gum, rust, mechanical causes/remedies	(all models)	SL Vol. 17, No. 14
Valves, Sticking vehicles in storage - precautions reiterated	(all models)	SL Vol. 13, No. 9
Valves, Sticky cold starts/stops, rust in guides - new corrosion-resistant material	(all models)	SL Vol. 14, No. 24
Valves, Sticky exhaust valves, rust - proper storage	(all models)	SL Vol. 15, No. 24
Valves, Sticky low speed operation, exhaust valves - valve chamber ventilation	120	SL Vol. 10, No. 8
Valves, Sticky valves/guides - valve spring tension	(all models)	SL Vol. 16, No. 4
Vibration Damper Wrench new special tools - required	120-120B; 115C 1600-1	SL Vol. 11, No. 20
Vibration Damper Wrench and Puller special tool - sale pricing, description	(not specified)	SL Vol. 10, No. 5
Warm Weather Service engine/cooling system - inspection/maintenance	(all models)	SL Vol. 11, No. 8
Water Pump - see: RADIATOR & COOLING
Wrist Pins, Loose low mileage, bushing black/corroded - insufficient oil changes	(not specified)	SL Vol. 16, No. 8

SC = Service Counselor

SL = Service Letter

STB = Service Technical Bulletin

SSB = Studebaker Service Bulletin

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