TM 5-4940-200-35
12. Circuit Breaker Lacks Current When On
16. Alternating Current Voltmeter Fails To Register
Probable cause
Possible remedy
Probable cause
Possible remedy
Circuit breaker defective .........Repair or replace a defec-
Alternating current
Replace alternating
t
ive circuit breaker
voltmeter defective.
current voltmeter
13. Circuit Breaker Will Not Stay Closed
17. Battery-Charging Ammeter Fails To Register
Probable cause
Possible remedy
Probable cause
Possible remedy
Overload trip assembly
Replace overload trip as-
Battery-charging resistor
Inspect the battery-
defective.
sembly (par. 47).
defective.
resistors. Replace
defective resistors
Circuit breaker defective ..........Replace circuit breaker
Battery-charging ammeter
Replace battery-charging
defective.
ammeter (par. 45).
14. Polarity Fails To Reverse
Probable cause
Possible remedy
18. Frequency Meter Fails To Register
Polarity control switch
Replace jumper wires as
jumper defective.
necessary (par. 45).
Probable cause
Possible remedy
Frequency meter defective
Replace the frequency
Polarity control switch
Replace polarity control
meter (par. 45).
defective.
switch (par. 45).
19. Welding Arc Breaks Down and Cannot
15. Direct Current Ammeter or Voltmeter
Be Maintained
Fails To Registe r
Probable cause
Possible remedy
Probable cause
Possible remedy
Commutator rough or
Reface the commutator
Direct current ammeter
Replace direct current
worn.
or voltmeter defective.
meter or voltmeter
20. Power Takeoff Noisy
Ammeter shunt defective- .......Replace ammeter shunt
(par. 45). Repair or
Probable case
Possible remedy
replace electrical lead.
Bearings defective
Replace the bearings
One or more gears chipped
Replace defective gears
or broken.
Section III. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS
(4) Refer
to
TM
5-4940-200-12
and
21. Power Takeoff
disconnect the lower linkage from the
a. Removal.
clutch linkage bracket assembly.
(5) Refer to paragraph 36 and remove the
(1) Refer to TM 5-4940-200-12 and remove
power takeoff universal joint and shaft
the power takeoff guard.
assembly.
(2) Refer to TM 5-4940-200-12 and adjust the
(6) Refer to figure 3 and remove the power
generator-welder drive belts to full loose.
takeoff.
Remove the belts from the generator-
welder pulley.
(3) Refer to TM 5-4940-200-12 and remove
the governor adapter drive V-belt from the
governor adapter drive pulley.
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