Workshop

HYDRA – MATIC 4L40 – E / 5L40 – E

AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
45
COMPONENT REBUILD SECTION
OIL PUMP ASSEMBLY
Copyright © 2002 ATSG
GM
83296 022
HYDRAMATIC
STRASBURG
FRANCE
*0139781RVO*
FROM FIGURE 57
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OIL PUMP AND BELL HOUSING
ASSEMBLY EXPLODED VIEW
Figure 58 Figure 59
1. Use Figure 57 and 58 as a guide to disassemble
the converter housing and oil pump assembly.
2. Clean all converter housing and oil pump parts
thoroughly and dry with compressed air.
3. Inspect all converter housing and pump parts
thoroughly and replace as necessary.
4. Lubricate all valves and sleeves with clean
transmission fluid and install the valve line-ups
exactly as shown in Figure 57.
5. Install a new pump screen and "O" ring seal in
pump cover as shown in Figure 57.
6. Install the selective thrust washer on the pump
cover and retain with Trans-Jel®.
7. Ensure that orifice cup plugs and ball capsules
are in place and functional.
8. The caged needle bearing can be serviced as
necessary with the proper puller and driver.
9. The bushing is not serviced and if necessary
will require a complete pump cover.
10. Set the completed pump cover aside for final
oil pump and converter housing assembly, as
shown in Figure 59.
Copyright © 2002 ATSG
COMPLETED PUMP COVER ASSEMBLY
6 66 6
6 66 6
1/8
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Continued on Page 46

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