Section VI. TROUBLESHOOTING
organizational maintenance shall be reported to Direct
4-11. General
Support Maintenance.
This section provides information useful in diagnosing
and correcting unsatisfactory operation or failure of the
4-12. Organizational Maintenance Troubleshooting
crane or any of its components. Each malfunction is
followed by a list of probable causes of the trouble. The
Refer to table 4-4 for organizational maintenance
corrective action recommended is described opposite
troubleshooting.
the probable cause. Any trouble beyond the scope of
Table 4-4. Troubleshooting
Malfunction
Probable cause
Corrective action
1. Engine overheats
V-belt broken
Replace V-belt
2Cold engine hard
a Dead or weak
a. Charge or replace.
to start or
batteries
batteries (para 4-61).'
fails to start
b Restricted fuel
b Clean fuel lines.
lines
c Loose injector
c Inspect and tighten
inlet or drain
as necessary (para
connection
4-35).
3 Carrier engine
a External or internal
a. Inspect, tighten and
has excessive
fuel leak
replace fuel line as
fuel consumption
necessary.
b. Engine overloaded
b. Reduce load.
4. Excessive oil
External oil leak
Inspect external oil
consumption
lines and tighten as
necessary (para 4-43)
5 Starter fails
a Poor electrical
a. Replace as necessary
to crank
connections
b Defective starter
b Replace starter switch
switch
c Starter brushes
c Replace brushes (para
worn
4-62).
6 Battery charging
a, Faulty generator
a Replace generator
generator (crane)
not charging
b V-belt broken
b Replace V-belt
7 Crane engine
a Incorrect clutch
a Adjust clutch (para
clutch slips or
adjustment
4-98).
will not engage
b Control linkage
b Tighten or adjust
properly
loose or out of
control linkage
adjustment
(para 4-97).
8 Light failure
a Defective or burned
a Replace lamps (para
out lamps
4-70 thru 4-75).
b Short in wiring
b Repair wiring (para
c Defective switch
c Replace switch (para
d Loose wiring
d Tighten connections.
connections
9 Dim lights
a Weak or dead
a Charge or replace
batteries
batteries (para 4-61).
b Loose wiring
b Check and tighten
connections.
4-6
