Section IV. INTERMEDIATE DIRECT SUPPORT TROUBLESHOOTING

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Table 3-1. Preventive Maintenance Checks and Services (Perform as required)

TM-55-1905-223-24-9 Steering Gear System for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

Section V. INTERMEDIATE DIRECT SUPPORT MAINTENANCE PROCEDURES

TM 55-1905-223-24-9

Section IV. INTERMEDIATE DIRECT SUPPORT TROUBLESHOOTING

3-6. Troubleshooting. Both a symptom index and troubleshooting table are provided. The symptom index will help you

locate the information you need for troubleshooting.

SYMPTOM INDEX

Troubleshooting

Procedure

STEERING GEAR

Not enough pressure

Item 1

Slow

Item 1

Will not respond to command

Item 2

Table 3-2 lists the common fault conditions that may be found during operation or maintenance of the equipment.

Perform the test/inspections and corrective actions in the order listed. This manual cannot list every symptom that may

occur, and it cannot list all probable causes and corrective actions. If a symptom is not listed or keeps up after you

perform the corrective actions, notify your supervisor.

Table 3-2. Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Upon energizing the main directional control valve, the steering gear operates slower than normal and cannot

develop full system pressure.

STEP 1. Check for contamination in manifold relief valve. Disassemble, clean internal parts, and

assemble valve (para. 3-12).

2. Steering gear will not respond to command at the main directional control valve.

STEP 1. Check for contamination in DARBS valve. Disassemble, clean internal parts and assemble

STEP 2. Check to see if uniblock 2A filters are plugged by contamination. Remove and clean inlet and

outlet filter (para. 3-12).

3-4