SW1 L4-1.9L SOHC VIN 8 (1996)
Technical Service Bulletin # 95-T-37A
Date: 990301
M/T - Gear Rattle
BULLETIN NO.: 95-T-37A
ISSUE DATE: March, 1999
GROUP/SEQ. NO.: Transaxle - 04
CORPORATION NO.: 99-07-31-001
SUBJECT:
Improved Manual :trans£axle Clutch Components and Updated F1ywheel Inspection Procedures
Due to revisions in the service procedures, this bulletin supercedes bulletin 95-T-37, which should be discarded.
MODELS AFFECTED:
1991 - 1999 Saturn vehicles equipped with MP2 or MP3 manual transaxles
PURPOSE:
New manual transaxle clutch components have been developed to address gear rattle concerns on 1996-1997 and 1998 vehicles built before and
including VIN WZ305219 equipped with MP2 or MP3 manual transaxles. The new components include a long travel damper clutch disc (P/N
21120564) chamfered flywheel (P/N 21120535) and new clutch cover (P/N 21120582). For the purpose of this bulletin, they will be referred to as the
2nd design components. The 1st design components consist of the past model clutch disc (P/N 21120453) flywhee1 (P/N 21120542) and clutch cover
(P/N 21120455). The 2nd design components service Saturn vehicles back to the 1991 node1 year.
The 1st design and and design components are interchangeable with one exception. The 2nd design clutch disc is not compatible with the 1st design
flywheel or cover. Therefore, when servicing with the 2nd design clutch disc on 1991 - 1997 or 1998 vehicles with VIN WZ305219 and prior:
IMPORTANT:
Mixing Of 1st and 2nd design clutch assembly components during repairs will result in the reduction of the clutch disc life.
^
The 1st design flywheel must be chamfered or replaced with the 2nd design flywheel.*(Refer to "Flywheel Chamfering" procedure listed in this
bulletin.) Failure to machine a chamfer on the flywheel could create a noise concern in the manual transaxle as the clutch disc wears under normal
operating conditions.
*1998 VIN VZ278819 and greater already contain the 2nd design chamfered flywheel.
^
The 1st design cover must be replaced with the and design cover.
The 1st design flywheel (P/N 21120542) maybe machined to create a chamfer so that it is compatible with the 2nd design clutch disc (P/N 21120564).
This prevents a flywheel replacement every time the 1st design clutch disc is replaced with a 2nd design disc. Listed below is the procedure for servicing
manual transaxle clutch components. In order to avoid service duplications, check service history of vehicle prior to performing any of the service
procedures.
Also, when replacing the clutch disc and pressure plate due to normal component wear, it may be necessary to replace the flywheel assembly to ensure an
effective friction surface. This bulletin provides guidelines to help determine whether a flywheel should be replaced.
PARTS REQUIREMENTS:
21120535
Asm-Flywheel
21120564
Plate Asm-Clutch Driven
21120582
Cover Asm-Clutch Housing
ADDITIONAL ITEMS:
A protractor will be needed to create a template
CLAIM INFORMATION:
