Table 3-1. Preventive Maintenance Checks and Services - Continued
Item
Interval
B-Before operation
A-After operation
M-Monthly
Org.
no.
Operator
D-During operation
W-Weekly
Q-Quarterly
Daily
W
M
Q
Item to be inspected
Procedure
Reference
B
D
A
SHEAVES AND
Replace hook block if cracked or if there is a
HOOK BLOCK
15% increase in the distance from the hook
(Continued)
point to the internal surface of the hook
throat (compare with a new hook block
for distance). Replace worn, cracked or
distorted sheaves
GAUGES
Check for the following normal readings:
Coolant Temperature160 F to 200F
Engine oil pressure 45 psi maximum.
Tachometer1980 (+25) rpm
Note: During operation, check controls
and gauges for proper operation. Be alert
for unusual noises and or vibration.
3-3
