Table 4-1. Organizational Preventive Maintenance Checks and Services for Crawler-mounted Rock Drill (Cont.)
Item
Item to
Not Fully Mission
No.
Interval
Check/ Service
Procedure
Capable If:
12
Quarterly
Air Hoses
Inspect air hoses for leaks. Tighten
loose fittings or replace defective hoses
(see paragraph 4-18 or 5-2 through 5-6).
13
Quarterly
Hydraulic Pump
Inspect hydraulic pump for proper oper-
ation and leaks. Tighten any loose fit-
tings.
14
Quarterly
Air Motor
a. Inspect air motor for proper opera-
tlon and leaks. If leaking, tighten fittings
or replace (see paragraph 4-21).
b. (’heck the air motor exhaust for pres-
ence of atomized oil. If oil is present, ad-
just air line lubricator (see paragraph
3-20).
15
Quarterly
Drill Motor
Inspect drill motor for proper operation
by making sure it travels freely on boom.
16
Quarterly
Feed Chain
Inspect feed chain gear case for leaks. If
leaking, report to direct support mainte-
nance.
17
Quarterly
Final Drive
Inspect final drive and drive sprockets
for insecure mounting. Tighten or re-
place hardware if necessary.
18
Quarterly
Transmission Breather
Refer to 1O 5-3820-241-12 and service
the transmission breather.
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