Section B THM 125-C Service Information and Repair Procedures
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current orderGENERAL
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS
BEARINGS 1980-1984 BUICK 47125-4 Service procedure provided for checking and using a new
& All models CAN 7-121 thrust bearing assembly (final drive sun gear to
WASHERS CHEV 84-100 differential). Part numbers also provided.
CORP 837018
HM 84-07
OLDS 34-8
PONT * 4-7-12
CASE 1982 BUICK 2-I-172-A Installation procedure given for missing cup plugs and one
All models CAD T83-29 pipe plug which may not have been installed during
CAN 7163 assembly.
CHEV 82-I-94
CORP 827014
HM 82-22
OLDS 32-10
PONT* 2-I-178
1980-1983 BUICK 83-145 Service procedure given for inspection of case
All models CAD T83-109 bushing when replacing final drive
CAN 7160-83 assembly.
CHEV 83-I-89
CORP 837010
HM 83-29
OLDS 33-11
PONT* 83-I-100
THM 125-C SERVICE INFORMATION AND REPAIR PROCEDURES (Cont'd.)
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current order
GENERAL
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS
CASE All models BUICK 85-7-1 Explanation of all key transmission identifications.
CAN 5-7103
CHEV 84-191
CORP 857989
HM 84-25
OLDS 85-T-6
PONT* 85-7-2
1984 BUICK 5-7125 This bulletin supercedes 84-47. Updated chart provides
CAN 4-7169 correct case cover part numbers.
CHEV 84-254
CORP 847009
HM 84-47A
OLDS 4-T-26A
PONT * 4-7-47A
1984 BUICK 5-7125-1 Provides information about 1984 vehicles
CAD T5-20 with 1985 transaxles. Use correct parts list
CAN 4-7156 when servicing.
CHEV 84-202
CORP 847050
HM 85-15
OLDS 35-4
PONT* 4-7-40
1985 BUICK 5-7125 This new oil slot will allow transmission fluid to spray
CAD T5-84 onto the drive link chain to provide additional
CAN 5-7128 lubrication.
CHEV 85-67
CORP 857004
OLDS 85-T-20
PONT* 5-7-15
THM 125-C SERVICE INFORMATION AND REPAIR PROCEDURES (Cont'd.)
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current order
GENERAL
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS
CLUTCHES 1982 HM 81-57 Modification of direct clutch assembly procedure is listed.
and
BANDS
1982 BUICK 82-T-39 Air check procedure is given when diagnosis of a burned
All models CAD T82-54 forward clutch housing is necessary.
CAN 7-132
CHEV 82-T-63
CORP 827011
HM 82-4
OLDS 32-7
PONT* 82-T-26
1983 HM 82-54 Service procedure given for assembling direct clutch
EF, EK models assembly using a new thicker direct clutch backing plate.
1980-1984 BUICK 47-125 Service procedure and illustration of new larger thrust
All models CAN 7121 bearing used in 1984 models.
CHEV 84-100
CORP 837018
OLDS 34-8
PONT* 4-7-12
THM 125-C SERVICE INFORMATION AND REPAIR PROCEDURES (Cont'd.)
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current order
GENERAL
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS
CONTROL 1982 BUICK 82-I-98 Illustration of wiring diagram for all THM 125-C with diesel
VALVE CAN 7142 engines given to update 1982 service manual.
COMPONENTS CORP 827010
HM 82-06
PONT * 2-I-105
1983 BUICK 83-157 Service procedure and package number given for new
CA, CB, CAD T83-112 control valve assembly to correct firm 1-2 and 3-2 shift
CF models CAN 7184 flare.
CHEV 83-T-66
HM 83-2
OLDS 34-1
PONT* 83-T-44
BUICK 83-133 Service procedure, illustrations and part charts
1983
CAN 7158 given for assembly and disassembly of the
CHEV 83-I-90 oil pump rotor and slide.
CORP 837009
HM 83-10
OLDS 83-T-17
PONT * 83-I-96
THM 125-C SERVICE INFORMATION AND REPAIR PROCEDURES (Cont'd.)
NOTE: General groups are listed in alphabetical order Bulletins are listed in previous to most current order
GENERAL
MODEL/YEAR BULLETIN NUMBERS SUBJECT SUMMARY
GROUPS
DRIVE All models BUICK 85-7440 New service procedure given for checking drive link chain
CHAIN CAD T-83-29 using scribe marks. Illustration provided.
CHEV 84-146
CORP 857901
HM 84-14
OLDS 33-11
PONT * 84-7-12
OIL All models BUICK 2-I-226 Rear oil seal installation emphasizing cleaning.
PUMP CAN 7-114
CHEV 54-3
CORP 827901
HM 81-59
1982 BUICK 82-I-93 Bearing assembly and new oil pump shaft seal replacement
CAD T8293 procedure given. Part number included.
CAN 7-121
CHEV 82-I-56
CORP 827004
HM 81-69
PONT* 82-I-85
SHAFT 1986 BUICK 6-71251 Provides information on correct tool usage when installing
ASSEMBLIES All models CAN 671251 seal rings on turbine shaft.
CHEV 85-128
CORP 867001
HM 85-54