Firebird V8-305 5.0L (1982)
Pinion Gear: Technical Service Bulletins
A/T - New Procedure for R&R of Gear Washers & Sun Gear
Bulletin Number:
89-7-35
Reference Number:
977119
Publish Date:
6/89
Subject:
NEW PROCEDURE FOR REPLACEMENT OF FINAL DRIVE PINION GEAR WASHERS AND SUN GEAR
Models
Affected:
1980-89 ALL MODELS WITH 440-T4/HYDRAMATIC 4T60 or 125C/HYDRA-MATIC 3T40
Figure 1
BULLETIN COVERS:
A new service procedure to replace Final Drive Pinion Gear Washers (807) and differential carrier sun gear bearing (677) on THM 440-
T4/HYDRA-MATIC 4T60 or (676) on THM 125C/HYDRA-MATIC 3T40.
SERVICE PROCEDURE:
Checking End Play -
Measure pinion gear end play using a feeler gage. The correct end play range is 0.24 - 0.63 mm (0.009" - 0.025"). If out of range, follow the procedure
given in this bulletin, since it is not currently included in the Unit Repair section of your Service Manual. Refer to Figure 1.
Figure 2
Disassembly -
1.
After removing final drive from unit, clean the entire bottom pan since it will be used to hold needle bearings.
