Galant L4-2.0L SOHC (1989)
Clutch: Customer Interest
A/T - Low-Reverse End Play Specification Changed
SUBJECT:
CHANGE OF LOW-REVERSE END PLAY SPECIFICATION ON KM175-5 AND KM177 TRANSAXLES
NO:
TSB-89-21-009
DATE:
APRIL, 1989
MODEL:
SIGMA V6
TSB REVISION:
89-21-009
PURPOSE To improve automatic transmission shift quality when going from neutral to reverse, MMC has decreased the low/reverse brake end play
specification value. This took effect in production on 9/19/88 and is retroactive for all 1989 Galants and 1989 Sigma V6s.
On KM175-5 and KM177 equipped vehicles built after 9/19/88, use the new specification during repairs. Also use the new specification if you are
overhauling the low/reverse brake assembly on a KM175-5 or KM177-equipped vehicle built before 9/19/88. To assist you in achieving this decreased
value, two new thicker pressure plates are available.
As a reference to this bulletin, please make the changes shown and write TSB number 89-21-009 in the TSB Revision box at the bottom of the pages
listed.
AFFECTED SERVICE MANUALS 1989 Galant Service Manual Volume 1, Pages 21-52, 21-53, 21-120 1989 Sigma V6 Service Manual Volume 1,
Pages 21-60, 21-61, 21-126
Location of the low/reverse brake pressure plate is shown
DESCRIPTION OF CHANGE As of 9/19/88, on the KM175-5 and KM177 the end play of the low/reverse brake was decreased to improve the N to R
shift.
Low/Reverse Brake End Play*
Old Specification:
1.2 - 1.4 mm (0.047 - 0.055 in.) (Prior to 9/19/88)
New Specification:
1.0 - 1.2 mm (0.039 - 0.047 in.) (After 9/19/88) (Same as on Eclipse)
On 1989 Galant and 1989 Sigma V6 built prior to the production change, use the new value if you are already repairing the low/reverse brake. To assist
in doing this, two thicker selective pressure plates are available. Depending on your measurements, use the appropriate one to attain the correct end play.
Selective Low/Reverse Brake Pressure Plates MD727801 5.8 mm MD731000 5.9 mm MD727802 6.0 mm MD731001 6.1 mm MD727803 6.2 mm
MD731002 6.3 mm MD727804 6.4 mm MD731003 6.5 mm MD727805 6.6 mm MD731004 6.7 mm MD731005 6.8 mm MD734766 6.9 mm New Part
MD734767 7.0 mm New Part
*Reminder: Soak friction discs for a minimum of 2 hours in fresh ATF before measuring end play or assembling transaxle.
