ENGINE -680640079

TM 5-2420-224-20-1

Table 2-1. Preventive Maintenance Checks and Services (Cont)

NOTE: Within designated interval, these checks are to be performed in the order listed.

INTERVAL DEFINITIONS

Q-Quarterly

S-Semiannually

A-Annually

Interval

Item

Item to be Inspected:

No.

Procedure: Check for and have repaired, filled, or adjusted as needed.

ENGINE

NOTE

Oil filter(s) will be serviced/cleaned/changed when they are known to be

contaminated or clogged; service is recommended by AOAP laboratory analysis;

or at prescribed hard time intervals (page 2-14).

Engine oil must be sampled at 50 hours of operation or 90 days, whichever occurs

first, for active Army units (Reserve and National Guard activities will use 50 hours

or 180 days) as prescribed by DA PAM 738-750, Functional Users Guide for the

Army Maintenance Management System (TAMMS).

a. Check all oil lines, fittings, and hoses for leaks.

b. Check oil filter housing, oil pan, and oil pan drain plug for leaks. Notify direct support

maintenance if there are any leaks.

Check valve cover for leaks.

d. Check valve clearance (page 4-5).

e. Check engine compartment wiring for frays, splits, missing insulation, or poor

connections.

f. Inspect mounting and attaching hardware for looseness. If mounting hardware is

damaged, notify direct support maintenance.

ELECTRICAL SYSTEM

NOTE

Refer to TM 9-6140-200-14 for service and maintenance of batteries.

a. Check alternator mounting for looseness. Inspect bracket and attaching hardware

for cracks, bends, and loose mounting.

b. Check alternator wiring for frays, splits, missing insulation, and loose terminal

connections.

Replace any broken terminal connections.

Notify direct support

maintenance for replacement of damaged wiring.

Check battery cables for frays, splits, and looseness.

d. Check battery box for corrosion and debris. Clean batteries and battery box.

23.1

Perform quarterly lubrication in accordance with page 2-14.

23.2

Perform semiannual lubrication in accordance with page 2-14.

23.3

Perform annual lubrication in accordance with page 2-14.

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