Quantcast Direct Support Mechanical Troubleshooting - continued - TM-9-2320-386-24-1-20030

 

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Direct Support Mechanical Troubleshooting - continued - TM-9-2320-386-24-1-20029
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/.5ton/TM-9-2320-386-24-1-2 Extended Service Program (ESP) for 2-1/2-Ton 6x6 M44A3 Series Trucks (Diesel) Manual
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Direct Support Mechanical Troubleshooting - continued - TM-9-2320-386-24-1-20031
TM 9-2320-386-24-1-2
0293 00
Direct Support Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
COOLING SYSTEM
WARNING
Hot coolant is under pressure. Care should be used when
removing surge tank filler cap or inspecting hot engine coolant
leaks. Steam or hot coolant under pressure may cause severe
injury to personnel.
Wear hand protection at all times when working with heated
parts. Failure to do so may result in injury to personnel.
20. COOLANT LOSS DURING NORMAL OPERATION
Perform malfunction 10.
END OF TESTING!
21. COOLANT TEMPERATURE EXCESSIVE
Step 1. Fuel setting is too high.
Adjust fuel setting as necessary (WP 0323 00).
Step 2. Check fuel injection timing.
Adjust timing as necessary (WP 0322 00).
END OF TESTING!
TRANSMISSION
22. TRANSMISSION SHIFTS OCCUR AT TOO HIGH OR TOO LOW A SPEED
Step 1. Check modulator valve for sticking valve and actuator rod.
a. Remove modulator valve (notify GS maintenance). Clean valve and actuator rod.
b. Replace modulator valve if valve or actuator rod is defective.
Step 2. Replace control valve (notify GS maintenance) if condition continues.
END OF TESTING!
23. TRANSMISSION SHIFTS SLOWLY OR FAILS TO ENGAGE
Perform malfunction 22.
END OF TESTING!
24. CLUTCH SLIPPAGE IN ALL FORWARD AND/OR REVERSE GEARS
Step 1. Check engine idle speed.
Adjust idle speed, if necessary.
Step 2. Remove control valve (notify GS maintenance) and check for sticking valves.
Replace control valve if valve(s) are sticking (notify GS maintenance).
Step 3. Remove and rebuild oil pump (notify GS maintenance).
Step 4. Remove and rebuild each forward and reverse gear clutch (notify GS maintenance).
END OF TESTING!
25. EXCESSIVE VEHICLE CREEP IN FIRST AND REVERSE GEARS
Perform malfunction 24.
END OF TESTING!

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