Replace/Repair Two Station Twin Engine with Bowthruster and Fire Control System.

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FIGURE 2-93. Junction Box Assembly

TM-55-1905-223-24-18-1 Landing Craft Utility (LCU) NSN 1905-01-154-1191 Basic Craft Part 1 Manual

REMOVAL

TM 55-1905-223-24-18-1

2-116. Replace/Repair Two Station Twin Engine with Bowthruster and Fire Control

System.

a. Inspection, b. Removal, c. Repair, d. Replacement.

This task covers:

INITIAL SETUP

Equipment Condition

Tools

Electrical power and air pressure to

Tool kit, general mechanic's,

pilothouse control console secured

and tagged "Out of Service - Do Not

Operate."

Materials/Parts

Access panel to pilothouse control

console removed (para. 2-115).

Venturi meter P/N H032-62

Linear directional valve P/N MOOO-20362

Warning tags, Item 1, Appendix C

Teflon tape, Item 5, Appendix C

Liquid leak detector, Item 36,

Appendix C

INSPECTION

Operate the system, observe the function for normal operation, AHEAD and

ASTERN. Recommended system supply pressure, 120 psi.

During operation check for air leaks at tube fittings, valves and actuator

seals by using liquid leak detector. Ensure all tubing is secured and

insulated from excessive vibration; check all flexible hoses for checking,

aging, or chafing.

With the system actuated AHEAD, inspect the following, then check again while

actuated ASTERN.

(1) The 3-position gear actuator cylinder should move freely without binding

o r twisting. The same is true for the governor actuator. Check all

linkages and adjustments for correct alignment.

(2) Check all pivot points for freedom of movement, excessive wear and

corrosion.

(3) Check valve indicator pins or stem positions to be sure all are in proper

sequence. (Refer to Table 2-3).

(4) Recheck all operating pressures for normal settings. (Refer to TM 55-

1905-223-10, Operator's Manual.)

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