TRANSMISSION WILL NOT SHIFT INTO GEAR, SHIFTS OUT OF GEAR, DOES NOT RESPOND TO RANGE SELECTION, OR OPERATES ABNORMALLY.

TM 9-2320-364-34-1

2-11. TRANSMISSION SYSTEM TROUBLESHOOTING (CONT).

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

NOT RESPOND TO RANGE SELECTION, OR OPERATES ABNORMALLY.

INITIAL SETUP

Tools and Special Tools

References

Tool Kit, General Mechanic's

TM 9-2320-364-10

(Item 240, Appendix F)

TM 9-2320-364-20

Pressure Test Kit (Item 165, Appendix F)

Equipment Condition

Wrench Set, Socket 3/8 In. (Item 273, Appendix F)

Engine OFF, (TM 9-2320-364-10)

Wrench, Torque (0-60 N.m) (Item 276, Appendix F)

Parking brake applied, (TM 9-2320-364-10)

Wheels chocked, (TM 9-2320-364-10)

Materials/Parts

Oil, Hydraulic (Item 34, Appendix B)

Sealing Compound (Item 53, Appendix B)

Personnel Required

Two

START

KNOWN INFO

TEST OPTIONS

WARNING

Read WARNING

Pressure test.

Unit Troubleshooting tasks

on Page 2-161

completed.

Is a

No ATEC codes.

REASON FOR QUESTION

minimum

Truck wiring OK.

of 110 psi (758 kPa) oil

Oil level OK.

Low main oil pressure will cause

pressure measured at

Solenoid wiring harness

abnormal transmission

transmission main oil

assembly OK.

operation.

pressure port with engine

running at idle speed and

POSSIBLE PROBLEMS

transmission in D (Drive)?

Low main oil pressure.

Internal oil filter faulty.

Servo unit control valve

assembly, front plate

assembly, first clutch trimmer

Go to Step 2 of this

assembly, or shift valve body

Fault.

assembly leaking or faulty.

Transmission faulty.

YES

Replace transmission

(Para 3-4).

Verify repair, go to

Step 4 of this Fault.

2-160