TRANSMISSION WILL NOT SHIFT INTO GEAR, SHIFTS OUT OF GEAR, DOES NOT RESPOND TO RANGE SELECTION, OR OPERATES ABNORMALLY. (Cont) -726250246

TM 9-2320-364-34-1

8. TRANSMISSION WILL NOT SHIFT INTO GEAR, SHIFTS OUT OF GEAR, DOES NOT

RESPOND TO RANGE SELECTION, OR OPERATES ABNORMALLY (CONT).

TEST OPTIONS

KNOWN INFO

Visual inspection.

Unit Troubleshooting tasks

Is transmission servo unit

completed.

REASON FOR QUESTION

control valve assembly, front

No ATEC codes.

plate assembly, first clutch

Truck wiring OK.

If servo unit control valve

Oil level OK.

trimmer assembly, and shift

assembly, front plate assembly,

Solenoid wiring harness

valve body assembly free of

first clutch trimmer assembly, or

assembly OK.

damage and are attachment

shift valve body assembly is

Low main oil pressure OK.

damaged, cracked, leaking, or if

screws properly torqued?

Internal oil filter OK.

attachment screws have

become loose and allow oil to

POSSIBLE PROBLEMS

leak past valves, it may cause

transmission not to shift into

Servo unit control valve

gear, or not respond to range

assembly, front plate

Tighten all screws

selected.

assembly, first clutch trimmer

attaching control

assembly, or shift valve body

valves.

assembly leaking or faulty.

Verify repair, go to

Transmission faulty.

Step 4 of this Fault.

YES

Replace transmission

(Para 3-4).

Verify repair, go to

Step 4 of this Fault.

2-164