A/T - Gasket Kit Installation
87chrysler20Models
1983-1984 "NE" (Colt) With KM170 Transaxle 1985-1987 "LA" (Colt) With KM171 Transaxle 1984-1987 "NF45Z" (Vista) With KM172 Transaxle
Subject
Gasket Kit Installation - Automatic Transaxle
Index
TRANSMISSION
Date
December 28, 1987
No.
21-17-87 (C17-21)
P-4735
A new heavy duty torque converter housing-to-transaxle gasket kit is available. Included in the kit is a new front pump Oring and various thickness differential and transfer shaft spacers. When installing the new gasket, it will be necessary to check differential and transfer shaft spacer thickness and replace, if necessary.
PARTS REQUIRED
KM170 and KM171 transaxles built prior to December, 1986 (up to transaxle CK0520), use kit, PN MD726244. KM 172 transaxles built prior to May, 1985 (up to transaxle AQ4209), use kit PN MD726246.
REPAIR PROCEDURE
This procedure involves replacing gasket and proper spacer installation.
1. Remove transaxle from vehicle.
2. Clean external surface of transaxle, and place in a repair stand with the converter housing facing up.
3. Remove the 13 converter housing-to-transaxle case bolts.
4. Separate converter housing from transaxle (it may be necessary to tap the housing with a plastic mallet to free it).
CAUTION: DO NOT USE A SCREWDRIVER OR OTHER METHOD TO PRY THE HOUSING LOOSE, AS DAMAGE TO HOUSING COULD OCCUR.
5. Remove and discard the old gasket. Remove and discard the O-ring from the outside edge of the front pump.
6. Clean all surfaces and remove all burrs.
FIGURE 1:
7. KM172 - Remove differential bearing outer race and transfer shaft outer race from the converter housing. The differential bearing outer race can easily be removed by pulling it upward. Removal of the transfer shaft outer race will require the use of Special Tool MD998346, (as shown in Figure 1).
8. Remove spacer from each outer race bore and measure and record thickness and location of each.
9. KM170 and KM171 - The differential bearing in these transaxles is a ball bearing which remains on the shaft. Therefore, the spacer should be in the housing. The transfer shaft bearing is a tapered bearing, so the outer race should be removed with Special Tool as indicated in Step 7.
10. Measure and record thickness and location of each spacer.
11. From among the spacers in the kit (see accompanying chart), select the spacer whose thickness is closest to the thickness of the original spacer plus (0.13 mm) 0.0051".
FIGURE 2:
12. KM172 - Position the differential spacer selected in Step 11 in converter housing bore. Insert differential bearing outer race in bore.
13. Position the transfer shaft spacer selected in Step 11 in converter housing bore. Using Special Tool MD998347, install transfer shaft bearing outer race in converter housing bore as shown in Figure 2.
14. KM170 and KM171 - Position the differential spacer selected in Step 11 in converter housing bore.
NOTE: IT MAY BE ADVISABLE TO APPLY A SMALL AMOUNT OF GREASE TO THE SPACER TO HOLD IT SECURELY IN THE BORE.
15. Position the transfer shaft spacer selected in Step 11 in the converter housing. Using Special Tool MD998347, install transfer shaft bearing outer race in converter housing bore as shown in Figure 2.
16. Position the new case gasket (MD725113) on the transaxle. Apply ATF to the new front pump O-ring (MD707636) and install on front pump.
17. Carefully position converter housing to transaxle. Using a plastic mallet, tap the converter housing down onto case. Be sure front pump O-ring remains in proper position during installation of converter housing.
18. Install and tighten the 13 converter housing bolts to 11 to 15 foot pounds - (19 to 23 N-m).
19. Carefully install torque converter. Torque converter should be 1.2594" (12 mm) below surface of housing.
20. Install and fill transaxle. Verify proper operation.
POLICY: Reimbursable within the provisions of the warranty
TIME ALLOWANCE:
Labor Operation No. 21-00-05-96 . . . . . . . . . . 0.2 Hrs.
FAILURE CODE: XX - Service Adjustment