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