Table 4-1 Organizational Preventive Maintenance Checks
and Services
Q - Quarterly
Total man-hours required 7 5
Sequence
ITEM TO BE INSPECTED
WORK
Number
PROCEDURE
TIME
(M H)
1
BOOM DRILL CARRIAGE
Inspect the feed chain for proper tension. Adjust if necessary (para 4-23).
0.5
2
DRIFTER DRILL CRADLE
Inspect the wear plates and shims for excessive wear.
0.5
3
CENTRALIZER
Inspect the centralize bushings for excessive wear. Replace defective
bushings (para 4-24).
0.3
4
HYDRAULIC HOSES
Inspect hydraulic hoses for leaks or other damage. Replace defective hoses (para 4-15).
0.5
5
AIR HOSES
Inspect the air hoses for leaks. Tighten loose fittings or replace
defective hoses (para 4-18).
0.5
6
HYDRAULIC CONTROL VALVE
Inspect the hydraulic control valve for leaks and proper operation.
0.2
7
HYDRAULIC PUMP
Inspect hydraulic pump for proper operation and leaks
Tighten loose fittings, replace a defective pump (para 4-15)
0.5
8
AIR MOTOR
Inspect the air motor for proper operation and leaks. Check the
motor exhaust air for presence of atomized oil. Adjust airline
lubricator (para 3-20). Replace a defective air motor (para 4-21).
1.3
9
DRILL AND FEED CONTROL VALVE
Inspect the drill and feed control valve for leaks and proper operation.
Tighten loose connections, replace a defective valve (para 4-18).
0.5
10
DRILL MOTOR
Inspect the drill motor for proper operation. Make sure it travels freely on the boom.
0.5
11
FEED CHAIN
Check the feed chain for proper tension. Proper tension is a 2 inch
deflection between the front and rear sprockets. Adjust as required (para 4-23).
1.2
12
FEED MOTOR
Check the feed motor for proper operation. Inspect the gear case for
leaks. Report a defective feed motor to direct and general support maintenance.
0.5
13
TRAMMING MOTORS
Inspect the tramming motors for proper operation and leaks.
.
Report a defective tramming motor to direct support maintenance
0.5
14
FINAL DRIVE
Inspect the final drive and drive sprockets for insecure mounting.
Tighten or replace hardware as required.
0.5
15
TRANSMISSION BREATHER
Refer to LO .53820-241-12 and service the transmission breather.
0.5
Section V. ORGANIZATIONAL MAINTENANCE TROUBLESHOOTING
4-12.
General
Refer to paragraph 3-5 introductory information and
the purpose of troubleshooting.
4-13.
Troubleshooting Table
Table 4-2 lists the organizational maintenance
troubleshooting malfunctions, tests or inspection
and the recommended corrective action.
4-10
