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FUEL SYSTEM -680640078
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TM-5-2420-224-20-1 Tractor Wheeled 4x4 DED Small Emplacement Excavator (SEE) and High Mobility Material Handler (HMMH) Manual
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HYDRAULIC SYSTEM -680640080
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.
Q
S
A
Procedure: Check for and have repaired, filled, or adjusted as needed.
ENGINE
22
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.
c.
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.
23
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.
c.
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.
Change 2
2-11

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