MTD 464 Operations Instructions download pdf (Page 38)

100

101

ARMY TM 9-6115-464-34

AIR FORCE 35C2-3-445-2

NAVY NAVFAC P-8-624-34

Section II. TROUBLESHOOTING

2-4. GENERAL.

This section provides information useful in diagnosing and correcting unsatisfactory operation or failure of

the generator sets and their components. Malfunctions which may occur are listed in table 2-2. Each

malfunction is followed by test or inspections and corrective actions. The corresponding listing of corrective

actions contains references to applicable maintenance paragraphs for correction of the malfunction.

NOTE

Refer to Operator and Unit Maintenance Manual for troubleshooting information

applicable to lower levels of maintenance.

Table 2-2 below contains information for locating and correcting operating troubles that may develop in the

generator set. Each malfunction listed for a component, a unit, or a system is followed by a troubleshooting

procedure that may help you determine what caused the trouble. Corrective action is provided to help you

remedy the problem.

Table 2-2. TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. ENGINE FAILS TO CRANK

Step 1. Defective cranking relay K3 (34, figure 3-119).

Replace defective cranking relay (para. 3-90).

Step 2. Defective reverse polarity diode (CR3) (see figure 3-121).

Replace reverse polarity diode (para. 3-90).

Step 3. Defective starter solenoid (7 figure 3-1).

Repair or replace starter solenoid (para. 3-4).

Step 4. Defective starter motor (figure 3-1).

Repair or replace starter motor (para. 3-4).

Step 5. Defective starter drive assembly (figure 3-1).

Repair or replace starter drive assembly (para. 3-4).

2. ENGINE CRANKS BUT FAILS TO START.

Step 1. Defective fuel nozzle assembly (figure 3-25).

Clean, adjust, repair, or replace fuel nozzle assemble (para. 3-23).

2-4

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MTD 464 Operations Instructions Page 38

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MTD 464 Operations Instructions Page 38

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