Repair Motorized Oil Pump Assembly

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Table 4-3. Control Module Output Voltage for ppm-CONT.

TM-55-1905-223-24-18-2 Landing Craft Utility (LCU) NSN 1905-01-154-1191 Basic Craft Part II Manual

FIGURE 4-10. Motorized Oil Pump

TM 55-1905-223-24-18-2

4-20. Repair Motorized Oil Pump Assembly. (Figure 4-10)

This task covers:

a. Disassembly,

b. Repair,

c. Assembly.

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's,

Oil pump/motor assembly removed

Materials/Parts

Stator P/N 4330-1545-002

Stator ring P/N 4320-2361-000

Rotor P/N 4320-4559-002

Universal joint P/N 4320-1612-000

Mechanical seal P/N 4320-2424-000

Motorized pump P/N 33260

Pump drive motor P/N 4330-04528-000

Lubrication oil, Item 20, Appendix C

DISASSEMBLY

a. Position motorized pump (15) on a clean flat surface.

b. Remove eight machine screws (8) securing housing (7) to pump body.

c. Separate and remove housing from pump body.

d. Slide stator ring (6) and stator (9) off of rotor (5).

e. Separate rotor (5) from universal joint (3) by using a punch to remove pin (4). Support rotor when

removing pin. Retain pin (4) for assembly.

f. Separate universal joint (3) from motor shaft by using a punch through outlet port on pump body to

remove pin (2). Retain pin (2) for assembly.

g. Slide universal joint off of motor shaft and out of pump body.

NOTE

If any part of mechanical seal is broken or damaged, the complete seal assembly

must be replaced.

4-37