Table 4-1. Organizational Preventive Maintenance Checks and Services for Crawler-mounted Rock Drill (Cont.)
Not Fully Mission
Inspect air hoses for leaks. Tighten
loose fittings or replace defective hoses
(see paragraph 4-18 or 5-2 through 5-6).
Inspect hydraulic pump for proper oper-
ation and leaks. Tighten any loose fit-
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
Inspect drill motor for proper operation
by making sure it travels freely on boom.
Inspect feed chain gear case for leaks. If
leaking, report to direct support mainte-
Inspect final drive and drive sprockets
for insecure mounting. Tighten or re-
place hardware if necessary.
Refer to 1O 5-3820-241-12 and service
the transmission breather.