24
HOIST ASSEMBLY
1. Assemble Brake, Cable Drum, Freefall, and Planet
Carrier subassemblies following procedures in the
subassembly section of this manual.
2. Press ball bearing (9) into fi nal drive support end plate
(3) and install the retaining ring (8). Turn the support
end plate with drum end up for seal installation. Ap-
ply Loctite Aviation Gasket Sealant (or equivalent non-
hardening sealant) to the outside diameter of the drum
seal (10) and install the seal in the support end plate
(3) with the spring side toward the bearing.
3. Set freefall assembly on the fl oor with bearing support
end down and ensure it is level and stable – it will re-
main in this position during winch assembly. Note the
position of the vent and oil level sight glass to ensure
proper position when the support end plate is installed
in later steps.
4. Apply general purpose grease to thrust washer (26)
and install on outside diameter of the bearing support.
Grease the thrust button (27) and install in the recess
in the bearing support.
5. Install the output planet carrier assembly (400) into the
ring gear (4) of the freefall assembly.
6. Ensure o-ring (29) is installed on the freefall assembly
and apply a light coat of grease to the o-ring surface.
Use ½ -13 eyebolts in the tapped holes for the tie
plates to lift the support end plate and lower it onto the
freefall assembly. Install the capscrews (35) and lock-
washers (16) that fasten the freefall assembly to the
bearing support and tighten.
Note:
The capscrews
should be torqued after the hoist is assembled and on
its mounting feet.
7. Ensure bearing (504) and oil seal (505) are installed
in the primary drive end of the drum. Apply grease
to the inner race of the support end plate bearing (9)
and seal (10). Use lifting straps to lower the drum
assembly (500) onto the support end plate aligning
the splines of the drum with the output planet carrier
splines. Install the sun gear shaft (5) into the output
planet carrier assembly.
8. If the primary end plate (1) was removed from the pri-
mary housing (2), assemble by applying Loctite 242 to
capscrews (14) and torque to 110 lb-ft (149 N-m).
9. Apply grease to the inner race of the drum bearing
(504) and seal (505). Use ½ -13 eyebolts in the
tapped holes of the primary housing and lower it onto
the drum.
10. Install the tie-plates using the shoulder capscrews (23)
and lockwashers (16) and torque to 110 Lb-ft (149
N-m).
NOTE:
The shoulder of the tie plate capscrew extends
8mm into the end bracket mounting holes to serve as
dowel pins to hold the end brackets aligned. Do not
replace the special capscrews with common standard
thread capscrews. See photograph below.
11. Install bearing (12) in the primary housing and apply a
light coat of grease to the inner race. Install the bear-
ing using a correctly sized bearing driver as shown in
the photograph below. Install the primary ring gear
(6) into the primary housing (2) with the counter-bore
along the ring gear teeth facing the motor side and the
cast groove facing the drum.
12. Install the primary planet carrier subassembly (300)
into the ring gear. Install the primary sun gear (7), and
thrust washer (48). NOTE: GH30B built prior to hoist
serial number 0801914 do not have thrust washer
(48.)
