Table 4-2. TROLBLESHOOTING Continued
Malfunction
Probable cause
Corrective action
d.
Ignition or spark plug fires loose or
d.
Tighten loose connections or replace wires
defective.
e.
Governor out of adjustment.
e.
Adjust governor in accordance with manual
specifications
f.
Air cleaner intake restricted.
f.
Service the air cleaner
g.
Fuel sediment bowl dirty.
g.
Service fuel sediment bowl (para 4-27)
4.
Engine stops suddenly
a.
Air cleaner clogged.
a.
Service the air cleaner
(Ref. Ford Maintenance/Service
b.
Ignition wire faulty.
b.
Inspect wire for a ground between ignition
Manuals)
switch and distributor
c.
Clogged fuel filter or line.
c.
Replace fuel filter. Clean line.
5.
Engine overheats
a.
Ventilation insufficient.
a.
Provide proper ventilation.
(Ref. Ford Maintenance/Service
b.
Radiator clogged or leaking.
b.
Clean or replace radiator (para 4-13).
Manuals)
c.
Water pump or thermostat defective.
c.
Test thermostat. Replace if defective (para 4-17).
Replace water pump (para 4-18)
d.
Low coolant level.
d.
Refill radiator (para 3-8).
c.
Fan belt loose or slipping.
e.
Adjust fan belt to correct tension (para 4-15 .).
a
6.
Engine oil pressure low
a.
Oil pressure gauge defective.
a.
Replace oil pressure gauge (para 4-30)
b.
Low oil level in crankcase.
b.
Refill crankcase ( Lube diagram ).
7.
Engine lacks power
a.
Valve lifter clearance incorrect.
a.
Adjust the valves
(Ref. Ford Maintenance/Service
b.
Carburetor improperly adjusted or
b.
Adjust or replace carburetor
Manuals) defective.
c.
Governor out of adjustment.
c.
Adjust governor
d.
Ignition timing out of adjustment.
d.
Retime the engine
8.
Engine knocks or develops
a.
Air leak in intake manifold.
A.
Replace gasket or manifold as required
excessive noise
(Ref. Ford Maintenance/Service
b.
Improper ignition timing.
b.
Retime engine
Manuals)
c.
Governor out of adjustment or defective.
c.
Adjust governor or linkage, replace if defective
9. Engine will not idle smoothly
a.
Carburetor improperly adjusted.
a.
Adjust the carburetor
(Ref. Ford Maintenance/Service
b.
Spark plug gap improper.
b.
Inspect and reset spark plug gap
Manuals)
c.
Improper distributor point gap.
c.
Adjust points
10. Engine exhaust smoky mostly
a.
Carburetor improperly adjusted or
a.
Adjust the carburetor or open choke valve
black smoke closed choke valve.
(Ref. Ford Maintenance/Service
b.
Carburetor defective.
b.
Replace the carburetor
Manuals)
c.
Air intake restricted.
c.
Service air cleaner
11. Electrical starter fails to operate
a.
Starter defective.
a.
Replace the starter ( Ford Manuals)
b.
Defective battery.
b.
Replace the battery (para 4-29)
c.
Battery cables defective.
c.
Replace cables (para 4-29a)
d.
Starter switch defective.
d.
Replace switch (para 4-30)
12. Ammeter shows improper charge
a.
Voltage regulator faulty.
a.
Replace regulator (-Ford Manuals)
b.
Defective battery cell.
b.
Replace battery (para 4-29)
c.
Ammeter defective.
c.
Replace ammeter (para 4-30)
d.
Alternator defective.
d.
Replace alternator (para 4-28)
13. Alternator does not charge
a.
Regulator defective.
a.
Replace regulator (Ford Manuals)
b.
Sulfated battery.
b.
Replace battery (para 4-29)
c.
Alternator defective.
c.
Replace alternator (para 4-28)
d.
Fan belt out of adjustment.
d.
Adjust the fan belt (para 4-15).
14. Transmission gears difficult to shift
a.
Incorrect lubricant.
a.
Drain and refill with proper lubricant
in accordance with ( Lube diagram).
b.
Insufficient lubricant.
b.
Refill transmission in accordance with
(Lube diagram).
15. Hydraulic cylinders operate slowly or
a.
Insufficient hydraulic oil in the system.
a.
Inspect the level of the hydraulic oil In
fail to operate at all
the tank and fill as required.
(Lube diagram ).
b.
Leak in pressure lines.
b.
Inspect the pressure lines for leaks or
loose connections. Correct this condition
c.
Clogged oil filter element.
c.
Replace filter element (para 4-24).
16. Hydraulic pump does not operate
a.
Insufficient hydraulic oil In the
a.
Inspect the level of hydraulic oil in the tank
or build up system.
and add oil as necessary. ( Lube diagram
b.
Clogged hydraulic line strainer or
b.
Remove and clean the hydraulic strainer
filter.
and replace filter (para 4-24b.).
4-4
