TM 5-3895-370-14&P
Table 4-4. Unit Troubleshooting Procedures - CONT.
Malfunction
Test or inspection
Corrective action
ELECTRICAL SYSTEM (CONT)
28.
VOLTMETER DOES NOT OPERATE.
Step 1. Check voltage at voltmeter.
If 24 ±3 vdc is not measured, go to step 3.
If 24 ±3 vdc is measured, go to step 2.
Step 2. Check voltmeter for a good ground.
If not grounded, ground gage.
If grounded, replace voltmeter (para 4-69).
Step 3. Check continuity of lead wire to voltmeter.
If wire has no continuity, replace wire.
If wire has continuity, refer to fault symptom #27.
BRAKE SYSTEM
29.
PARKING BRAKES DO NOT RELEASE.
Step 1. Inspect that brakes are not caged.
If brakes are caged, uncage brakes (para 4-98).
If brakes are not caged, go to step 2.
Step 2. Inspect emergency gladhand and air hose for looseness and damage.
If gladhand(s) or air hose(s) is leaking or damaged, Tighten gladhand or replace
gladhands and/or air hoses (para 4-106/4-105).
If gladhand and air hose are not damaged or leaking, go to step 3.
Step 3. Inspect emergency air tank for leaks.
If emergency air tank is damaged, replace emergency air tank (para 4-100).
If emergency air tank is not damaged, go to step 4.
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