TM-9-2320-280-20-1

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 1 OF 3

JANUARY 1996

TM-9-2320-280-20-1 - Page 521 of 888

TM 8-2320-280-20-1

REFERENCE INFORMATION

TRANSMISSION SYSTEM

(4L80-E)

If the drivetrain system checks out OK, the

problem is either the transmission itself, the

shifter or the modulator. The DRIVETRAIN

tests are located in Paragraph 2-33

of this

manual.

Make sure that the detents in the shifter

correspond to the shift positions shown on

the plate. Have an assistant move the shifter

and look to see that the linkage is moving at

the transmission.

Linkage repair and adjustment procedures

are shown in Paragraph 5-13.

Look for a fan cut-off switch problem if the

vehicle was not shifting, or was not shifting

as well as it should be.

NOTE

Run the BRAKES and DRIVETRAIN tests in

this manual. If you don’t find any faults, notify

DS maintenance.

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