A/T - Valve Body/Check Valve Specification Revision
88chrysler04Models
1985-1988 "YDC" (Conquest) Equipped With JM600 Automatic Transmission
Subject
Automatic Transmission Valve Body and Check Valve Specification Changes - Service Manual Revisions
Index
TRANSMISSION
Date
April 11, 1988
No.
21-05-88
P-1318
(C21-06)
The JM600 transmission for 1988 model year Conquest vehicles, contains one valve body orifice check valve, instead of three as was used for the 1985, 1986, and 1987 Conquest JM600 transmissions. This change from three check valves to one was effective with transmission No. MR604.
Group 21 (Transmission) of the 1988 Conquest Service Manual should be revised on the pages indicated below to reflect this change.
In addition to the above, orifice check valve identification information (color coding) was inadvertently omitted from the 1985, 1986, and 1987 Conquest Service Manuals. The check valves are color coded to ensure that the different diameter valves are installed in their proper places.
Please refer to the service manuals listed below and insert the corrected information as indicated.
Publication Applicable
Manual Number Pages
1988 Conquest Volume I 81-270-8015 21-120, 21-125
1987 Conquest Volume I 81-270-7013 21-125
1986 Conquest Volume I 81-270-6013 21-119
1985 Conquest Volume I 81-270-5013 21-119
1988 Conquest - Group 21 - Transmission
Page 21-120
A. Step 3 should read as follows:
3. During valve body separation, do not scatter or lose orifice check valve, throttle relief check valve (ball), and related springs.
B. Replace illustration JAT127 with new illustration furnished.
1988 Conquest - Group 21 - Transmission
Page 21-125
A. Step 3 should read as follows:
3. Install orifice check valve, valve springs, throttle relief valve spring, and steel ball in valve body.
B. Replace Illustration JAT127 with new illustration furnished.
1987 Conquest - Group 21 - Transmission
Page 21-125
1985 and 1986 Conquest - Group 21 - Transmission
Page 21-119
A. Cross out Illustration JAT127.
B. Insert new illustration and check valve identification chart furnished in service manual.
C. An additional check valve identification chart is printed below for your convenience.
ORIFICE CHECK VALVE A B C
DIAMETER - MILLIMETERS 1.4 1.3 2.0
- INCHES 0.055 0.051 0.079
IDENTIFICATION COLOR METAL GOLD METAL
POLICY: Information Only