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 TM 5-1940-277-20
TM 1940-20/2
Section IV. TROUBLESHOOTING (Continued)
MK1 and MK2 w/SABRE or CUMMINS
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
20. ENGINE HAS FUEL KNOCKS.
Step 1.
Check for air in fuel lines.
Bleed air from fuel lines (refer to paragaph 3-64).
Step 2.
Check for poor quality of fuel in supply tank.
Drain and clean fuel supply tank and all filters (refer to paragraph 3-59).
Step 3.
Check for malfunctioning fuel injectors or fuel injection pump.
Replace damaged or worn fuel injectors or fuel injection pump (refer to paragraph 3-127).
END OF TESTING
21. ENGINE ALTERNATOR NOT CHARGING.
Step 1.
Check for loose or corroded battery cables.
Clean corroded battery cables and tighten all connections (refer to paragraph 3-90).
Step 2.
Check for missing or slipping drivebelt.
Replace drivebelt if missing, or belt tensioner if slipping (refer to paragraph 3-119.1).
Step 3.
Check for loose wiring harness connections.
Tighten loose connections (refer to paragraph 3-91).
Step 4.
Check for malfunctioning alternator or gauge.
Replace malfunctioning alternator or gauge (refer to paragraph 3-91).
END OF TESTING
NOTE
Tasks twenty-two through forty-three apply to MK1 and MK2
w/Sabre or Cummins.
22. TRANSMISSION SHIFTS HARD.
Step 1.
Check transmission oil level.
a. Fill to proper level (refer to paragraph 3-135).
Step 2.
Check transmission lines and fittings.
a. Tighten loose connections and fittings.
b. Replace defective lines and fittings (refer to paragraph 3-136).
Step 3.
Check oil strainer assembly (refer to paragraph 3-135).
a. Service oil strainer assembly (refer to paragraph 3-135).
NOTE
If metal filings or chips are found report to Direct Support
Maintenance.
b. Replace oil strainer assembly (refer to paragraph 3-135).
23. TRANSMISSION SLIPS OUT OF GEAR.
Step 1.
Check transmission lines and fittings.
a. Tighten loose connections and fittings.
b. Replace defective lines and fittings (refer to paragraph 3-136).
Step 2.
Check transmission control linkage adjustment.
a. Adjust transmission control linkage.
2-30
Change 2
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