Automatic Transmission Oil Cooler Flushing - Technical Service Bulletin
Technical Service Bulletin # 021041787
Date: 870401
A/T - Transmission Cooler
REFERENCE TRANSMISSION & CLUTCHES NUMBER 021 DATE 04-17-87 MODEL RN55, RN75 CAB CHASSIS
TITLE - IMPROVED TRANSMISSION COOLING PERFORMANCE - CAB CHASSIS
To improve automatic transmission cooling, two oil cooler kits have been made available.
Part Number and Production Change Information
Application Chart
Production Information (Cab & Chassis)
Aug. 1984-Jan. 1986
Jan. 1986-May 1986
May 1986
RN55 - 7004790
7004791 thru 7006084
7006085
Part Name
Part Number
RN75 - 0004786
0004787 thru 0008017
0008018
Oil-Cooler Kit #1,
Air-Cooled Trans.
04006-10135
Required
Required
*
Valve Body
Modification Kit #2
04006-10235
Required
*
*
Tube, Oil Cooler
Inlet
32921-35120
Required
*
*
Tube, Oil Cooler
outlet
32922-35140
Required
*
*
Liquid Tube
88716-89151
**
**
-
Cooler Plate
88892-89113
**
**
-
Screw
93567-55014
**
**
-
*
Changed in production, not required ** Required for vehicles equipped with air conditioning
PART NUMBER INFORMATION
KIT #1
Oil-Cooler Kit #1, Air-Cooled
P/N:
04006-10135
Part No.
Part Name
Qty
32910-35020
Cooler Assy, Oil
1
32929-24040
Clamp, Flexible Hose No. 2
1
32932-35010
Tube, Oil Cooler Outlet, Front
1
32931-35010
Tube, Oil Cooler Inlet, Front
1
32913-35020
Bracket, Transmission Oil Cooler
1
32914-35020
Stay, Transmission Oil Cooler
1
82711-12200
Clamp
1
90301-11006
Ring, O
2
90404-16023
Union
2
90445-14099
Hose
1
90445-14127
Hose
1
90460-14085
Clamp, Hose
2
90179-08066
Nut (for air-cooled oil cooler)
2
90179-08015
Nut (for oil cooler stay)
2
90119-06241
Bolt w/Washer (for oil tube clamp)
1