Table 3-3. Troubleshooting - Continued
Malfunction
Probable cause
Corrective action
7.
Engine exhaust excessively.
a.
Air cleaner clogged
a.
Service air cleaner (para 3-11).
smoky
b.
Defective fuel injector
b.
Replace (para 3-68).
8.
Engine clutch slips ---------------
a.
Clutch out of adjustment
a.
Adjust (para 3-9).
b.
Linkage out of adjustment ------------
b.
Adjust (para 3-108).
9.
Engine clutch will not engage
a.
Linkage out of adjustment ------------
a.
Adjust (para 3-108).
b.
Clutchout of adjustment
b.
Adjust (para 3-9).
c.
Worn clutch-------------------------------
c.
Report defect to general support
maintenance.
10. Engine temperature fails to
a.
Winterfront open at low ambient
a.
Adjust winterfront (para 4-52).
raise
temperature.
b.
Defective thermostat (stuck open)
b.
Replace (para 3-105).
11. Water temperature indicator
a.
Loose electrical connection ----------
a.
Tighten all connections, Make
inoperative
good ground.
b.
Transmitter defective ------------------
b.
Replace (para 3-91).
c.
Indicator defective ----------------------
Replace (para 3-154).
12. Oil pressure indicator
a.
Loose electrical connections
a.
Tighten all connections. See that
inoperative
ground is good.
b.
Defective transmitter ------------------
b.
Replace (para 3-150).
c.
Defective indicator -------------------
c.
Replace (para 3-150).
13. Ammeter inoperative-------------- a.
Battery cables loose or corroded.
a.
Remove corrosion and tighten
b.
Dead batteries --------------------------
b.
Charge or replace (para 3-81).
c.
Ammeter defective --------------------
c.
Replace (para 3-149).
14. Starter motor inoperative --------- a.
Loose electrical connections
a.
Remove corrosion and tighten
battery cables (para 3-81) and at
solenoid. Replace defective cables.
b.
Starter push switch defective
b.
Replace (para 3-157).
c.
Batteries defective ---------------------
c.
Replace (para 3-81).
d.
Defective starter motor ---------------
d.
Replace (para 3-87).
15. Lights are dim or do not light
a.
Defective lamps or lights -------------
a.
Replace (paras 3-15 and 3-42).
Replace defective light (paras 3-181
thru 3-188).
b.
Short in wiring---------------------------
b.
Replace defective leads (para 3-95).
c.
Batteries dead -------------------------
c.
Charge, or replace (para 3-81).
d.
Defective generator, alternator, or
d.
Test and replace defective
regulator
component (para 3-33 thru 3-86).
16. Revolving frame teeters, or will.
a.
Hook rollers out of adjustment or
a.
Adjust (pars 3-39) or replace
not swing
worn excessively.
b.
Swing brake lock engaged,
b.
Release, or adjust (para 3-33).
or out of adjustment.
c.
Swing jaw clutch out of ---------------
c.
Adjust shoe (para 3-29) or shifter
adjustment.
17. Boom will not lower ---------------
a.
Boom hoist pawl still engaged ------
a.
Release pawl (paras 2-8c and 2-12b).
b.
Brake does not release ---------------
b.
Adjust boom hoist lever and
linkage (para 3-120), or clutch
18. Crane-shovel does not steer ---
a.
Steering gear not engaged ----------
a.
Engage (para 2-8ac).
properly.
b.
Steering linkage, clutch, or brake
b.
Adjust (para 3-88 and/or 3-138).
out of adjustment
19. Cables twisted ---------------------
a.
Twisted during installation ----------
a.
Unwind cable from drum and rewind.
b.
Too much slack ------------------------
b.
Refer to applicable front end
attachment reeving diagram and
reeve correctly.
20. Cables wear rapidly --------------
a.
Sheave(s) dragging or defective
a.
Lubricate (LO 5-8810-201-12), or
replace defective sheave bearing
or shaft (refer to applicable
front end attachment paragraphs).
3-48
