Replace/Repair Lube Oil Pump Group. (FIGURES 3-57 through 3-71)

TM 55-1905-223-24-4

3-26. Replace/Repair Lube Oil Pump Group. (FIGURES 3-57 through 3-71)

This task covers: a. Removal, b. Repair, c. Replacement.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's rail

Power disconnected and tagged " ut of

and marine diesel engines,

Service."

Front gear cover removed (para. 3-24).

Torque wrench kit P/N 3377216

Oil drained.

Radiator assembly removed (para. 3-14).

Combination wrench set, metric

Crankshaft pulley removed (para. 3-24).

10mm thru 24mm, 5120-01-046-4979

Materials/Parts

Solvent, Item 20, Appendix C

Engine oil pump assembly

P/N 3906413

Warning tags, Item 21, Appendix C

REMOVAL (FIGURE 3-71; for callouts)

Perform the following tasks for gear backlash and removal of lube oil pump.

a. After front gear cover assembly is removed, measure gear backlash as

follows:

(1)

Position the indicator on a tooth of the lube oil gear.

NOTE

Hold the adjoining gear from moving when checking

backlash.

(2)

Note the lube pump gear backlash. (FIGURE 3-67)

(3)

Mark the lube pump gear and the idler gear if the limits are exceeded.

3-69