 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 Table 4-2. Troubleshooting
Malfunction
Probable cause
Corrective action
19. Low fuel pressure
a.
Air leak in fuel lines
a.
Tighten connections; replace lines
if damaged (para 4-20).
b.
Fuel pump defective, diaphragm
b.
Replace fuel pump (para 4-20).
broken; valves leaking, linkage
worn.
c.
Fuel lines clogged
c.
Clean or replace lines (para 4-21).
20. Engine idles to fast
a.
Improper carburetor throttle stop
a.
Adjust idle speed adjusting screw
adjustment
b.
Accelerator linkage sticking
b.
Free and lubricate linkage (para
c.
Accelerator linkage return spring
c.
Replace spring (para 4-24).
weak.
21. Fuel gage does not register
a.
Loose wire connection at in-
a.
Tighten connections.
strument panel or tank unit.
b.
Fuel gage in instrument panel
b.
Replace unit (para 4-40).
inoperative.
22. Loss of coolant
a.
Loose hose connections
a.
Tighten hose connections.
b.
Damaged or deteriorated hose
b.
Replace hoses (para 4-28).
c.
Leaking radiator
c.
Replace radiator (para 4-28).
d.
Defective pressure cap
d.
Replace cap or gasket.
23. Engine too cool during operation
a.
Thermostat sticking
a.
Replace thermostat and gasket
b.
Low air temperature
b.
In cold weather cover an air intake
under driver's seat.
24. Engine overheats
a.
Airflow through radiator core
a.
Clean radiator core from coun-
restricted
terweight side with compressed
air or water (para 4-28).
b.
Coolant level low
b.
Fill radiator to proper level (para
c.
Clogged radiator core
c.
Clean by flushing radiator (para
d.
Thermostat stuck
d.
Replace thermostat (para 4-29).
e.
Damaged or deteriorated hose or
e.
Replace defective parts (para 4-31).
fan belt
f.
Radiator or water pump leaking
I.
Replace defective parts (para 4-30).
g.
Loose fan belt
g.
Adjust fan belt tension (para 4-31).
h.
Ignition timing incorrect
h.
Reset timing (para 4-36).
i.
Damaged muffler; bent or clogged
i.
Replace defective parts (para 4-26).
j.
Insufficient oil or improper grade
j.
Refer to lubrication order.
of oil.
k.
Air cleaner restricted
k.
Clean air cleaner and change oil in
cup (para 4-25).
I.
Water pump impeller broken
l.
Replace pump (para 4-30).
m.
Timing incorrect
m.
Reset timing (para 4-36).
25. Starting motor cranks engine
a.
Engine oil too heavy
a.
Change to proper grade oil.
slowly.
b.
Weak battery
b.
Recharge or replace battery (para
c.
Battery cell shorted
c.
Replace battery (para 4-39).
d.
Battery connections corroded,
d.
Clean and tighten or replace
broken, or loose
cables.
e.
Starting motor defective
e.
Replace starting motor (para 4-35).
26. Starting motor does not crank
a.
Engine oil too heavy.
a.
Change to proper grade oil.
engine.
b.
Starting motor, solenoid or cables
b.
Replace defective starting motor
defective; loose connections.
connections.
c.
Starting motor pinion gear
c.
Replace starting motor (para 4-35}.
jammed in flywheel drive gear.
d.
Dirty drive mechanism.
d.
Clean and lubricate drive
mechanism.
e.
Faulty starter relay.
e.
Replace starter relay (para 4-40).
f.
Faulty ignition switch.
f.
Replace switch (para 4-40).
g.
Faulty neutral starting switch.
g.
Replace switch (fig. 4-40).
4-6
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals