ELECTRICAL--WARNING LIGHTS AND HORN

TM 9-2350-238-20-1

2-11. TROUBLESHOOTING INFORMATION (CONT).

Table 2-3. UNIT TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

26. SPEEDOMETER OR TACHOMETER NEEDLE DOES NOT MOVE, IS NOT STEADY, OR

DOES NOT READ CORRECTLY (CONT).

Step 4.

On engine side of driver's compartment bulkhead, disconnect speedometer

shaft assembly or tachometer shaft assembly at adapter. Check shaft core

rotation with engine running.

If core is rotating, go to step 5.

If core is not rotating, replace tachometer shaft assembly or

speedometer shaft assembly between adapter and engine or

transmission. Refer to page 2-1149. Connect speedometer shaft

assembly or tachometer shaft assembly to adapter.

Step 5.

On driver's side of driver's compartment bulkhead, disconnect speedometer

shaft assembly or tachometer shaft assembly from adapter. Check rotation in

adapter with engine running.

If rotation exists in adapter, replace speedometer shaft assembly or

tachometer shaft assembly between adapter and speedometer or

tachometer. Refer to page 2-1149.

b. If no rotation exists in adapter, replace adapter. Refer to page

2-1149. Connect speedometer shaft assembly or tachometer shaft

assembly at adapter.

ELECTRICAL--WARNING LIGHTS AND HORN

27. MASTER IND WARNING LIGHT IS OFF AND ELECTRICAL CIRCUITS ARE OPERATING.

Step 1.

Check ground lead at left headlight disconnect for bad connection.

Tighten loose connection.

Step 2.

Troubleshoot master indicator warning light circuit. Refer to Electrical Circuit

Symptom Index, page 2-92.

2-66