Dover TWG TULSA WINCH 707W Service Manual - Page 8
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1. Drain the oil from the gearbox and brake sections using the instructions on page 7.
2. Stand the hoist on its end with the motor pointing up.
3. Disconnect the hose
and counterbalance valve assembly from the hoist by removing two capscrews
(Item 52)
washers
.
valve disassembly.
4. Remove the brake subassembly from the hoist by removing eight capscrews
the brake housing to the side plate
brake repair
.
5. Remove the side plate
6. Lift the bearing carrier
signs of pitting or spalling and if necessary, replace the bearing and seal
7. Remove the sun gear
replace if needed.
8. Remove the planet gearset
See Servicing The Planetary Set section on page 13 for disassembly and repair.
needed.
(Item 5)
9. Remove the drum
the gear teeth for excessive wear and replace if necessary. Inspect the bearing
signs of spalling or pitting and, if necessary, replace the bearing and seal
10. Inspect the retaining ring
is not bent, and replace if necessary.
(Item 32)
11. Inspect the shaft
(Item 50)
by removing six capscrews
DISASSEMBLY
(Item 46)
connected to the brake housing
See Servicing The Motor section on page 10 for motor and counterbalance
(Item 1). See Servicing The Brake section on page 11 for
(Item 1)
by removing twelve capscrews
(Item 26)
out of the drum
(Item 8)
from the planet gearset
(Item 4)
from the drum. Inspect the gearset for wear and repair as
by lifting straight up and off of the output shaft
(Item 3)
on the output shaft to ensure that it is still in the groove and
for wear or damage and, if necessary, remove it from the side plate
(Item 62).
(Item 21)
(Items 2 & 60)
(Item 5)
.
Inspect the bearing
(Item 4)
. Inspect for damage and
8
. Remove the motor
(Item 51)
and
(Item 9)
holding
.
(Item 28)
for
(Item 7-3)
.
(Item 32).
Inspect
(Item 28)
for
(Item 7-3)
.