STANDARD HANDBOOK OF PETROLEUM & NATURAL GAS ...

Hoisting System
547
,-Wear
and cracks
Cracks in last thread
Excessive effort to rotate
Latch and lever
LCracks ond wear
MAINTENANCE:
1. Keep clean.
2. Grease coat latching mechanism, hook, and bail throat.
3. Grease main bearing.
4. Oil pins not accessible to grease lubrication.
5. Remove any rust and weather protect as required.
6. Check and secure pins and fasteners.
Figure 4-24. Tubing and sucker rod hook [lo].
Thickness is meosured
at top of upper eye
with calipers
Ta determine strength
of worn links. measure
with colipers. Link
copacity is that of
weakest eye. Consult
manufacturer for rating.
Check ENTIRE link
for cracks
Thickness is measured
at bottom of lower
eye with colipers
MAINTENANCE: PLAN SECTION
1. Keep clean.
2. Grease coat upper and lower eye wear surfaces.
3. Remove any rust and weather protect as required.
Figure 4-25. Elevator link [lo].