A/T - ZF and GM 400 Repair Reference

91jaguar05

44-12


Procedure


MODEL: All DATE: 6/91


ISSUE:

ZF and GM 400 transmission repair.


ACTION:

When repairing or replacing ZF or GM 400 transmissions, refer to the diagnostic checks included in section 44 of the XJ-S and Sedan Range repair manuals and and to the transmission specifications below.


NOTE: The diagnostic checks must be performed before any transmission repairs are made.

Refer to Administration Bulletin Section 6-22 for transmission repair policy and warranty information.


TRANSMISSION SPECIFICATIONS:


Sedan Range:


Model Transmission Stall Speed
Year: VIN: Model: ( +/- 150 RPM):

1988 up to 538477 ZF 4 HP 22 1950

88/89 from 538478 ZF 4 HP 22 2250

90/91 All ZF 4 HP 24 E9 2000


XJ-S:

Model Transmission Stall Speed
Year: VIN: Model: ( +/- 150 RPM):

1982 105338 GM 400 2100-2400


On 90/91 MY Sedans, if the vehicle will not move in either Drive or Reverse, a mechanical fault exists. Refer to the Diagnostic Charts in Section 44 of the Sedan Range Repair Manual.

If the vehicle will move in both forward and reverse but the "Transmission Warning" light is on, perform a JDS "Electronic Transmission" test.

If diagnosis has identified an internal transmission problem, perform the following procedure:

^ Drain the transmission oil into a container. Note the color and smell of the oil.

^ Remove the transmission sump pan and oil filter and inspect for debris/metal particles and/or water.

If the oil is dark in color and any of the above oil conditions exist, refer to Administration Bulletin 6-22.