Custom Cruiser RWD V8-350 5.7L (1992)
Seals and Gaskets: By Symptom
Technical Service Bulletin # 93T21A
Date: 930701
A/T - Fluid Leak at Helix Converter Seal
NUMBER: 93-T-21A
CORP.REF.NO: 277148R
DATE: July 1993
SECTION: 7A, 4T60-E
SUBJECT:
TRANSAXLE FLUID LEAK AT HELIX CONVERTER SEAL - REPLACE TRANSAXLE WITH SRTA (SERVICE REPLACEMENT
TRANSMISSION ASSEMBLY) UNIT
MODELS/YEARS:
1991-93 VEHICLES EQUIPPED WITH HYDRA-MATIC 4T60-E TRANSAXLE (RPO-M13)
This bulletin is being revised to change the correction instructions. This bulletin cancels and supersedes Dealer Technical Bulletin 93-T-21 which should
be discarded.
CONDITION:
Some vehicles equipped with a 1991-93 HYDRA-MATIC 4T60-E (RPO M13) transaxle built on or before Julian Date 302 (October 28, 1992) may
exhibit a fluid leak between the helix converter seal and its bore. Under some conditions the helix converter seal may walk-out partially or completely.
Hot weather and/or extreme operating conditions are contributing factors to this concern.
CAUSE:
The above condition may be due to the taper of the helix converter seal bore and cannot be repaired at a dealership level.
CORRECTION:
Begin with the "Fluid Leak Diagnosis?" ("Automatic Transaxle On-Vehicle Service Section of the applicable 1991-93 Service Manual") which provides
a detailed procedure in locating and repairing vehicle leaks.
If it is determined the leak is from the helix converter seal, remove the transaxle assembly and replace it with a SRTA (Service Replacement
Transmission Assembly).
SERVICE MANUAL INFORMATION:
Refer to the 1991-93 Service Manual, Automatic Transaxle On-Vehicle Service Section 7A for proper On-Vehicle Service to remove and replace a
HYDRA-MATIC 4T60-E transaxle.
WARRANTY INFORMATION:
Labor time should be charged under Operation Number K7000 for "Transaxle Assembly-Replace" from the appropriate 1991-93 Labor Time Guide.
Technical Service Bulletin # 93T21A
Date: 930701
A/T - Fluid Leak at Helix Converter Seal
NUMBER: 93-T-21A
CORP.REF.NO: 277148R
DATE: July 1993
SECTION: 7A, 4T60-E
SUBJECT:
TRANSAXLE FLUID LEAK AT HELIX CONVERTER SEAL - REPLACE TRANSAXLE WITH SRTA (SERVICE REPLACEMENT
TRANSMISSION ASSEMBLY) UNIT
MODELS/YEARS:
1991-93 VEHICLES EQUIPPED WITH HYDRA-MATIC 4T60-E TRANSAXLE (RPO-M13)
This bulletin is being revised to change the correction instructions. This bulletin cancels and supersedes Dealer Technical Bulletin 93-T-21 which should
be discarded.
