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An Index to Service Information for 1951-54 (24th->54th Series) Packards

1951-54 (24th->54th Series) - ULTRAMATIC

SubjectApplicationDocument
Bearings, Care of Ball and Roller
installation/removal damage - proper support
(all models)
Bell Housing and Bushing Assembly
oil leaking past seal - drain back area increased
25th
Bell Housing Oil Seal
leather leaks - use neoprene
23rd-24th;
(25th-55th)
Bell Housing Oil Seal Leaks
converter mis-alignment - checks
23rd-24th;
(25th-56th)
Bell Housing Seal Drain Hole - Enlarged
leaks - drain hole enlarged
24th
Brake Piston Seal Retainer - Part No. 423084
low and reverse - proper thickness
23rd-54th
Breather Oil Leaks
speeds over 30MPH - speedometer driving gear installed backwards
23rd-26th
Breather, Late Type
oil loss - new design, relocated
23rd-24th
Bushing Tools, Service
description and illustration of use
23rd-24th
Bushing Tools, Service
description and illustration of use
23rd-55th
Bushings and Bearings, Service
part number reference
23rd-56th
Bushings, Service
now available for service - see SC Vol. 24, No. 11
23rd-24th
Bushings, Service
part number reference
23rd-55th
Bushings, Service
part number reference
23rd-24th
Changes in...
converter pump broken, governor valve sticking - reactor shaft bearing kit, anodized governor parts
54th
STB 54T-11 (Zones only)
Changes inů (Confidential) (REVISED)
production - typos
26th
STB 53T-3R (Zones only)
Changes inů (Confidential)
production - with part, effective date/unit
23rd-24th
STB 51T-10 (Zones only)
Changes inů (Confidential)
production - with part, effective date/unit
24th
STB 51T-14 (Zones only)
Changes inů (Confidential)
production - with part, effective date/unit
23rd-24th
STB 51T-3 (Zones only)
Changes inů (Confidential)
production - with part, effective date/unit
24th
STB 51T-36 (Zones only)
Changes inů (Confidential)
production - with part, effective date/unit
24th-25th
STB 52T-5 (Zones only)
Changes inů (Confidential)
production - with part, effective date/unit
26th
STB 53T-14 (Zones only)
Changes inů (Confidential)
production - with part, effective date/unit
26th
STB 53T-3 (Zones only)
Clutch Housing Bushing Tools, 9-in. Converter
new special tools
25th
Control Assembly Part No. 423800 (exc. Gear Start)
superceded part - exceptions
23rd-54th
Control Valve: Changes to Improve Shift Pattern
update to 56th Series - new valving kits
54th-55th
Control Valve: Damper - New Type
pulsation/flutter - new type valve
23rd-24th
Control Valve: Plug Gauge Set
special tool for 23rd Series, also for 24th - indentification chart
24th
Control Valve: Torque-Tightening
stuck valves - fluid/pressure leaks
(NOTE: page missing from archived document)
23rd-56th
Control Valve: Valve Body, Upper
new production, die-cast - requires spring-type check valve
23rd-24th
Converter: Application Chart
part number reference - incl. flywheel
23rd-25th
Converter: Assemblies - Balanced
9-in. type - service precautions
25th
Converter: Corrosion Preventative in Replacements
silica gel pack - remove
23rd-24th;
(25th-56th)
Converter: Fluid Leaks
damaged washers - use of sealant
23rd-56th;
56J
Converter: Inlet Pressure
lower pressure in reverse
23rd-24th
Converter: Outlet Valve
check valve found - removal
24th
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
Converter: Pump Shaft - Oil Pump Rotor Splines - Worn or Stripped
new 40-spline service parts
54th-55th-56th
Converter: Pump Shaft and Oil Pump Rotor
worn/stripped splines - corrections, superseded parts)
54th-55th-56th;
56J
Converter: Reaction Clutch Sprags
premature failure - replace in sets
54th-55th-56th;
56J
Converter: Reaction Clutch Sprags
replacement - use of reaction clutch assembly
54th-55th-56th;
56J
Converter: Reactor Shaft Bushing Clearance
direct drive failure - excessive clearance
23rd-24th;
(25th-55th)
Converter: Reactor Shaft Bushing Installer Spacer
9-in. converter, shallower setting - new special tool
25th
Converter: Reactor Shaft Thrust Bearing
new type - superseded parts
26th-54th
Converter: Reactor Shaft, Thrust Bearing
new type - identification, service
26th
Converter: Relief Valve
eliminated in production - replace with plug
25th
Converter: Retaining Screw Changes
self-locking screws, special washers - torque spec
24th
Converter: Torque
new 9-in type - description
24th-25th
Converter: Whine or Whistle
oil flow, insufficient vane clearance - new style first turbine
25th
STB 52T-10 (Zones only)
Diagnosis
basic procedure, pressure tests, adjustments
23rd;
(24th-54th, exc. Gear Start)
Diagnosis and Pressure Check Information (exc. Gear Start)
direct drive clutch engagement - procedures
23rd-54th
Direct Drive Clutch - see also:
Diagnosis and Pressure Check Information
--
--
Direct Drive Clutch: 9-in.Converter
does not engage - new type clutch piston
25th
Direct Drive Clutch: Fails to Disengage
engine stalling - enlarge governor oil vent
23rd-26th
Direct Drive Clutch: Fails to Disengage
engine stalling - governor modification
25th-54th
Direct Drive Clutch: Piston Ring Gap, Checking
precautions - specifications
23rd-24th;
(25th-54th, exc. Gear Start)
Direct Drive Clutch: Plate - 11-1/4 and 9-in. Diameter
torsional disturbance, roar - new types, larger spring openings
23rd-26th
Direct Drive Clutch: Plate - 9-in. Diameter
torsional disturbance, roar - superseded part, larger spring openings
24th-26th
Direct Drive Clutch: Plates - 11-1/4-in.
torsional disturbance, with new style planetary dampers - enlarged spring openings
23rd-25th
STB 52T-20 (Zones only)
Direct Drive Clutch: Release - Gear Start
slow/no release in drive - new governor and parking lock gear
54th
STB 54T-15 (Zones only)
Direct Drive Clutch: Slippage - Gear Start
slipping due to oil - removal of chamfers
54th
Direct Drive Clutch: Slippage
retained oil - rework clutch facing chamfers
54th
Disturbance in Reverse
insufficient oil - rear pump check valve modification
25th
Disturbance in Reverse
oil restricted, aerated - enlarge check valve opening
25th
Engine Runaway - Flare - Low Brake Information
premature failure of high range clutch - summary of checks and corrections
54th-55th-56th
Engine Runaway
low range brake spring changes
54th-55th
Engine Runaway/Flare - see also:
Front Oil Pump
High Range Clutch
Low Range Brake
Throttle Control/Linkage
Throttle/Timing Valve
--
--
Engine Support Bar Screws
special tool update - longer screws required
24th;
(25th-54th)
Filling Gear-Start Transmission
suggested tool - fabrication
54th
Flat Rate Manual, Changes in
inspection and fluid change - sheets attached
24th-54th
Fluid Drain Can
new special tool - fluid filtering/reuse
23rd-24th;
(25th-56th)
Fluid Drain Period Revised
increased - level check unchanged
23rd-24th
Fluid Level, Checking
converter outlet check valve eliminated - check within one minute
23rd-24th
Fluid Temperature Affects...Upshift
loss of pressure, bushing wear - pressure tests
54th-55th-56th;
56J
Flywheel
superseded parts - 9- and 11-1/4-in. converters
23rd-25th
Flywheel Attaching Screws (Part Number - Correction)
self-locking washers
23rd-25th
Flywheel Attaching Screws
discard old screws - use new self-locking type
23rd-25th
Flywheel Housing Support Kit, Installing
rework holes - shims
2401
Flywheel Screw
superceded part
23rd-24th
Flywheel Screws
part number correction
23rd-25th
Forward Gears Inoperative, Transmission (exc. Gear Start)
front pump relief valve sticking
23rd-54th
Front Oil Pump - see also:
Converter Pump Shaft
--
--
Front Oil Pump and Converter Shaft Kits
new parts
54th-55th-56th
Front Pump Relief Valve
material conservation - oversized parts
26th
Front Pump Relief Valve Spring Seat
high range delay, sticking valve - new seat
24th
Gear Shift Lower Bracket
superseded parts
24th
Governor Adaptor Screen - Ultramatic Drive
governor sticking - filter added
24th
Governor Cleaning Brushes
new special tool - nylon
23rd;
(24th-54th, exc. Gear Start)
Governor Flyweight Ring Tool
alternative tool - fabrication
23rd;
(24th-54th, exc. Gear Start)
Governor Housing and Inlet Valve
governor rattle - venting changed
23rd-25th
Governor Nylon Gears - Stripped
driving or driven - torque tightening procedure
23rd-26th
Governor Removal
insufficient frame clearance - revised procedure
24th
Governor Valves Sticking
oil screen cleaning
23rd-24th;
(25th-54th)
Governor Vent Valve and Support
sticking - improved design
23rd-25th
Governors, Cleaning
inspection, dressing, washing
23rd;
(24th-54th, exc. Gear Start)
High Range Clutch: (failures)
operating precautions
56th;
(54th-55th)
High Range Clutch: 10 and 12 Plate Assemblies, Identifying
visual indicators - parts interchange
23rd-25th
High Range Clutch: Assembly
lubrication improved - vent springs/holes eliminated
23rd-26th
High Range Clutch: Lubrication and Operation
production changes
25th
High Range Clutch: Piston Ring Gap, Checking
precautions - specifications
23rd-24th;
(25th-54th, exc. Gear Start)
High Range Clutch: Plates - Replacement
use of new parts only
23rd-25th
Leaks - see also:
Bell Housing Oil Seal
Breather
Converter
Oil Leaks/Loss
--
--
Linkage Adjustments (exc. Gear Start)
selector, control valve, throttle control and valve, kickdown
24th-54th
Linkage Adjustments - see also:
Throttle Control Rod
Throttle Linkage
Throttle Valve Lever
--
--
Linkage Adjustments
new model information
24th
Linkage Adjustments
new model information
24th
Linkage Adjustments
selector, control valve, throttle - latest, updated procedures/special tools
23rd-26th
Low and Reverse Bands
reduced width - interchangeable
24th
Low Range Drum to Reactor Clutch Housing Clearance
specification increased
23rd-24th
Low Range Operation
high range clutch failure - proper use of low range
23rd-25th;
(26th-56th)
Low Range Operation
high range failure - proper use
23rd-25th;
(26th-56th)
Low Speed Disturbance
direct drive - alter shift point
54th-55th
Measuring End Thrust Clearance
revised procedure
24th
Oil Leaks
from flywheel housing - locating source
23rd-25th
Oil Leaks
past articles referenced
23rd-54th
Oil Leaks, Starter Safety Switch
gasket failure - installation assist
23rd-54th
Oil Loss at Breather
level, restrictions, overheating - relocation
23rd-56th;
56J
Oil Loss Through Breather
checks - rear housing passage, planetary oil ring, rear oil pump
24th
Oil Pressure Changes
production change - revised test specifications
23rd-25th
Oil Screen
governor/valves sticking - cleaning
23rd-24th;
(25th-54th)
Oil Seal Replacer - Rear Housing
new special tool
24th
Oil Seals
damage, leaks - special tools, proper use
23rd-24th
Operation - Coasting
discouraged - high range clutch wear
23rd-25th
Operation Under Emergency Conditions
rocking, long pulls, steep grades - use low range
23rd-25th
Park, Locking in
pawl and gear clearance - loose, worn, damaged parts
54th-55th-56th
Piston Ring Gap, Checking
direct drive, high range clutches - specifications
23rd-24th;
(25th-54th, exc. Gear Start)
Planetary Assembly
balanced - identification
26th
Planetary Cage Damper
low speed disturbance - backlash dampers added
24th
Planetary Cage Damper
low speed disturbance, backlash - new type
24th
Planetary Cage Damper Installer
new dampers - new special tool
24th
Pump Check Valve Noise
click/flutter - new type valve
23rd-24th
Pump Check Valve Noise
clicking, fluttering - new spring-type valve
23rd-24th
Rear Housing Bearing Retainer Ring Pliers
new special tool
24th
Rear Oil Pump Driver
premature wear - hardened
54th-55th-56th
Rear Oil Pump Driver
premature wear - redesigned
54th-55th-56th
Rear Oil Pump Driver
premature wear - redesigned
54th-55th-56th
Rear Oil Pump Rotor Sets
cost savings - new kits
54th-55th-56th
Reverse Not Released - Tips From The Editor
planetary ring gear bushing scored/seized - band adjustment, piston sticking
23rd-54th
Reverse Piston Seal Retainer and Band Adjusting Screw
high range clutch failure, dislocated seal - improved parts, same numbers
23rd-26th
Serial Number
new range - different speedometer drive gear
26th
Serial Number
unit reference chart - revised
26th
Serial Number Correction - Die-Cast Valve Bodies
starting numbers incorrect in STB 52T-1, Dealer 1
23rd-24th
Service Information, Confidential - Gear Start
slippage, no upshift, harsh downshift - low front pump pressure, low range brake orifice
54th
STB 54T-17 (Zones only)
Speedometer and Governor Driving Gears, Nylon
production change - service replacement
26th
Speedometer and Governor Gears, Nylon
superseded steel parts
23rd-26th
Speedometer Pinions and Adapters
offset pinion bore - part number reference
23rd-54th
Throttle Control Rod
bent - length data
24th-54th
Throttle Control Rod
bent - length data
24th-55th
Throttle Control Rod Adjustment
bent - rod length data
24th-55th
Throttle Control Rod Splasher
binding linkage - snow/slush build-up
24th
Throttle Cross Shaft to Carburetor Rod Tool
special tool revised - 359-cid engine, modification
5406-13-26-31
Throttle Linkage Adjustment Change
high range clutch burning - revised procedure
24th
Throttle Linkage Adjustment Change
revised procedure
24th
Throttle Linkage Adjustments
supplement - corrections/variations
54th-55th-56th
Throttle Valve and Timing Valve Kit
engine runaway - improved design
23rd-26th
Timing Valve Timing Pin - Revised
excessive overlap low-to-high, cold - fabricating smaller pin
23rd-26th
Torque Specifications
revised - shop manual
24th-25th
Transmission Lifting Tool
new special tool - production change, modification for old tool
26th
Transmission Removal - Warning
359-cid engine - heavy-duty air cleaner removal
5406-13-26-31
Transmission, Service
serial number suffix - updated parts
23rd-26th
Transmissions, Service - Stripped
shipped less bell housing
54th-55th
Ultramatic Drive Tool
suggested tool - assembly line-up arbor, fabrication
23rd;
(24th-54th)
Universal Joint Flange Bolt
click, loosening - new type
54th-55th
Universal Joint Flange Bolt
click, loosening - new type
54th-55th

SC = Service Counselor
SL = Service Letter
STB = Service Technical Bulletin
SSB = Studebaker Service Bulletin

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