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An Index to Service Information for 1948-50 (22nd->23rd Series) Packards

1948-50 (22nd->23rd Series) - ULTRAMATIC

SubjectApplicationDocument
Bearings, Care of Ball and Roller
installation/removal damage - proper support
(all models)
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)
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
parts list
23rd-56th
Bushings, Service
parts available for service
23rd-55th
Bushings, Service
parts available for service
23rd-24th
Bushings, Service
parts/tools now available, do not order complete housings - see SC Vol. 24, no. 11
23rd-24th
Bushings, Service Replacment
clutch housings, thicker bushings - new kits, superseded parts
23rd
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
23rd-24th
STB 51T-3 (Zones only)
Control Assembly Part No. 423800 (exc. Gear Start)
superceded part - exceptions
23rd-54th
Control Assembly, New Type
exploded view - adjustment procedure affected
23rd
Control Throttle Shaft Over-Travel, Correcting
high range clutch failure - new throttle shaft stop
23rd
Control Timing Valve Spring Seat
cleaning precaution
23rd
Control Valve: Damper - New Type
pulsation/flutter - new type valve
23rd-24th
Control Valve: Dampers
two head styles - proper removal
(NOTE: page missing from archived document)
23rd
Control Valve: Lever and Link
new, one-piece link and adjustments
23rd
Control Valve: Lever And Link Assembly, New Type
new, one-piece link and adjustments
23rd
Control Valve: Link Adjustment
engine load in park, high range engaged - adjustment using special tool
23rd
Control Valve: Torque-Tightening Controls
stuck valves - fluid/pressure leaks
(NOTE: page missing from archived document)
23rd-56th
Control Valve: Valve Body Separator Kit
third design - drill/tap body for additional retaining screws
23rd
Control Valve: Valve Body, Upper
new production, die-cast - requires spring-type check valve
23rd-24th
Converter Inlet Pressure
lower pressure in reverse
23rd-24th
Converter Oil Leak
gasket/bolts - pump flange clearance inspection/correction
23rd
Converter: Application Chart
part number reference - incl. flywheel
23rd-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: Reactor Shaft Bushing Clearance
direct drive failure - excessive clearance
23rd-24th;
(25th-55th)
Converter: Reactor Shaft End Play
direct drive clutch hang-on - new thrust washers, increase running clearance
23rd
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: Fails to Disengage
engine stalling - enlarge governor oil vent
23rd-26th
Direct Drive Clutch: Fails to Disengage
hanging on - causes/correction, additional annular grooves
23rd
Direct Drive Clutch: Fails to Disengage
hanging on - causes/correction, additional annular grooves
23rd
Direct Drive Clutch: Fails to Disengage
hanging-on, stalling - converter production changes, identification
23rd
STB 49T-37 (Zones only)
Direct Drive Clutch: Fails to Disengage When Coming To A Stop - Engine Stalls
sticking valves, clutch driving plate - free up valves, proper torque
23rd
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: 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: Plates, Grooved (CORRECTED)
included in converters, identification - field identification, special serial numbering
23rd
STB 50T-26C, Dealer 21
Direct Drive Clutch: Plates, Grooved
included in converters, identification - field identification
23rd
Engine Runaway/Flare - see also:
Front Oil Pump
High Range Clutch
Low Range Brake
Throttle Control/Linkage
Throttle/Timing Valve
--
--
Engine Support Bar
new special tool - transmission removal
22nd-23rd
Flat Rate Item Allowances And Changes And Additions To Flat Rate Manual
corrections - additions
23rd
Flat Rate Manual, Changes in
inspection and fluid change - sheets attached
23rd-54th
Flat Rate Manual, Revised Edition of the Current
revisions/corrections - Ultramatic added
23rd
Flat Rate Times Revision, Ultramatic Drive
adjustments per survey
23rd
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
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 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
Governor Assemblies, Replacement
calibrated to axle ratio - part number reference
23rd
Governor Assemblies, Replacement
calibrated to axle ratio - part number/application reference
23rd
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 Replacement
returns not defective - clean, free up vent valve
23rd
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: 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: 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
Hydraulic Disturbance
low speed, deceleration - add cooler line insulators
23rd
Hydraulic Disturbance
low speed, deceleration - add cooler line insulators
23rd
Input Shaft Assembly, Late Design
additional oil hole for reactor shaft bushing - inspect stock, return old type
23rd;
(24th?)
Inspection and Servicing...During the Warranty Period
recommended procedures/intervals - fluid checks/changes
23rd
Lifting Bar Holes, Cleaning
insufficient thread - dirt
23rd
Linkage Adjustments - see also:
Throttle Control Rod
Throttle Linkage
Throttle Valve Lever
--
--
Linkage Adjustments
selector, control valve, throttle - latest, updated procedures/special tools
23rd-26th
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)
Oil Change at 1000 Mile Inspection During Warranty Period, Discontinuation of
improved production cleaning/inspection - no longer warranted
23rd
Oil Cooler
engine-mounted conversion - improved cooling
23rd
Oil Cooler
radiator tank cooler failure - new, engine-mounted kit
23rd
STB 52T-19 (Zones only)
Oil Cooler Assembly, Radiator Core Bottom Tank and
cooler tube failure - new service part
2301-02-06-13
Oil Cooler Fittings
radiator core - use 45-degree
23rd
Oil Filler Cap Campaign
oil loss at breather, new vent for cap - field modification
23rd
Oil Hole in Universal Joint Flange
not needed - removed from production, plugged
23rd
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 Pressure Changes
production change - revised test specifications
23rd-25th
Oil Pumps
multiple design changes - now serviced as assembly only
23rd
Oil Screen
governor/valves sticking - cleaning
23rd-24th;
(25th-54th)
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
Parts List, Preliminary
illustrated - part reference
2306-33
Piston Ring Gap, Checking
direct drive, high range clutches - specifications
23rd-24th;
(25th-54th, exc. Gear Start)
Pump Check Valve Clatter
front pump knock - new relief valve spring
23rd
STB 49T-25 (Zones only)
Pump Check Valve Clatter
new damper for production - field installation
23rd
Pump Check Valve Noise
click/flutter - new type valve
23rd-24th
Pump Check Valve Noise
clicking, fluttering - new spring-type valve
23rd-24th
Pushing or Towing Ultramatic Drive Equipped Cars
emergency procedure
23rd
Radiator Cooler Tube Failure
excessive pressure - check valve eliminated
23rd
Radiator Cooler Tube Failure
excessive pressure, sticking check valve - check valve torque, inspect free play
23rd
Radiator Cores
standard ordered in error, lacks cooler - part number reference
23rd
Replacement Units
10- vs. 12-plates - not interchangeable
23rd
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 Correction - Die-Cast Valve Bodies
starting numbers incorrect in STB 52T-1, Dealer 1
23rd-24th
Servicing and Testing...Cars Before and After Delivery
recommended inspection and follow-up
23rd
Servicing the Ultramatic
fluid type and level - draining and refilling
23rd
Speedometer and Governor Gears, Nylon
superseded steel parts
23rd-54th
Speedometer Driving Gears Spacer, New Type
improved lubrication, retrofit - related parts
23rd
Speedometer Pinions and Adapters
offset pinion bore - part number reference
23rd-54th
Starter Safety Switch
two types - not interchangeable
23rd
Throttle Linkage Adjustments Change
high range clutch burnout, low pressure - revised procedure, temporary shims
23rd
Throttle Linkage Tools - Adapters
new extensions - facilitate revised procedures
23rd
Throttle Linkage, Sticking
bell crank corrosion - clearing, lubrication
23rd
Throttle Linkage, Sticking
bell crank corrosion - clearing, lubrication
23rd
Throttle Shaft Adjusting Gauges
new special tool - Carter WGD
23rd
Throttle Valve and Timing Valve Kit
engine runaway - improved design
23rd-26th
Throttle Valve Lever Adjusting Gauge - PU344
special tool, return - first run, incorrectly bent
(NOTE: page missing from archived document)
23rd
Throttle Valve Lever Adjustment
key eliminated, use new tool - proper procedure
23rd
Throttle Valve Lever Adjustment, Additional Information on
clarification of procedure - S.C. Vol. 24, No 4
23rd
Throttle Valve Link Rod Adjusting Gauge
new type control valve and link - new tool required
23rd
Timing Valve Timing Pin - Revised
excessive overlap low-to-high, cold - fabricating smaller pin
23rd-26th
Tool Manual Inserts
order blanks - transmission hoist
(all models)
Torque Changes to Prevent Leakage, Cap Screw
converter pump, bell housing - inspection procedure, new specs
23rd
Torque Specifications
reference chart
23rd
Transmission, Service
serial number suffix - updated parts
23rd-26th
Ultramatic Drive Tool
suggested tool - assembly line-up arbor, fabrication
23rd;
(24th-54th)
Unit Numbers
required for product reports, returns, etc.
23rd

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

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Disclosures & Disclaimers

Though previously published elsewhere, this work is provided with my full permission for display on the PackardInfo.com website and the personal use of visitors to that site. Any other unauthorized use, however, is expressly prohibited and may be subject to prosecution. Also, because this index was compiled from documents published by the factory, neither the author nor PackardInfo.com are responsible for errors in content arising from source information.

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