TM 5-1940-322-24
0006 00
MECHANICAL SYSTEMS TROUBLESHOOTING (Contd)
Table 1. Engine Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check fuel lines for air.
Bleed fuel lines (WP 0080 00).
12. ENGINE HAS FUEL
KNOCKS
2. Check fuel injectors and fuel
Replace damaged or worn fuel injectors
injection pump for malfunctions.
and/or fuel injector pump
1. Check for loose or corroded battery
Repair or replace battery cables
13. ENGINE
cables.
ALTERNATOR NOT
connections.
CHARGING
2. Check for missing or slipping
1. Replace drivebelt (WP 0086 00).
drivebelt.
2. Replace tensioner (WP 0087 00).
3. Check for loose harness
Tighten loose harness connections.
connections.
4. Check for malfunctioning
Replace damaged alternator
14. ENGINE OVERHEATS 1. Check keel cooler for marine
Clean keel coolers (TM 5-1940-322-10).
growth and other foreign matter.
(ENGINE AUDIBLE
ALARM ACTIVATES) 2. Check keel coolers for evidence of
If keel coolers are damaged, replace
leaks, cracked plating, or signs of
corrosion.
3. Check coolant level in header tank.
Fill coolant to 1 in. below neck.
4. Check drivebelt for proper tension.
1. Replace belt tensioner
2. Replace drivebelt if evidence of
fraying or cracking is noticeable
5. Check cooling system for
1. Tighten hose clamps.
malfunctions.
2. Inspect all hoses for leaks and/or
damage. Replace damaged hoses
3. Tighten header tank and keel
cooler drain plugs.
6. Check water pump for
1. Tighten hose clamps.
malfunctions.
2. Inspect all hoses for leaks and/or
damage. Replace damaged hoses
3. If water pump is damaged, replace
