TM5-3820-256-10
Table 3-4. Troubleshooting the Drawworks (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6.
AUXILIARY DRUM
Step 1. Check to see if
Operate auxiliary drum con-
DOES NOT HOIST
auxiliary drum brake is
trol and auxiliary brake lever
SUSPENDED LOAD.
set too tightly.
together to engage clutch
and slip brake. Do not allow
suspended load to free-fall.
Step 2. Check to see if
Move drawworks power cont-
drawworks power is on.
rol to ON position, then
release it. Repeat step 1.
7.
WIRE ROPE WILL
Check to see if third drum
Operate third drum clutch
NOT SPOOL OFF
clutch and brake are re-
lever and brake lever toget-
THIRD DRUM.
leased.
her to release clutch and
brake. Do not allow suspend-
ed load to free-fall.
8.
THIRD DRUM BRAKE
Check to see if third drum
Firmly grasp third drum brake
DOES NOT HOLD
brake is set too tightly.
lever, squeeze ratchet re-
SUSPENDED LOAD.
lease, pull hard on brake
lever, let go of ratchet re-
lease, then let go of brake
lever.
9.
THIRD DRUM DOES
Step 1. Check to see if
Operate third drum clutch
NOT HOIST SUSPEN-
third drum brake is set too
lever and brake lever toget-
DED LOAD.
tightly.
her to engage clutch and slip
brake. Do not allow suspen-
ded load to free-fall.
Step 2. Check to see if
Move drawworks power con-
drawworks power is on.
trol to ON position, then
release it. Repeat step 1.
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