Genie Z-45/22 Service Manual page 189

Section 7 - Repair Procedures
TURNTABLE ROTATION COMPONENTS
4 Locate the "0" mark stamped in the outside
bearing and the dowel on the inside bearing.
5 Position the inside bearing dowel 90 degrees
counterclockwise from the "0" mark on the
outside bearing.
6 Install a grease fitting on the inside bearing and
apply grease until it comes out of the inner
seal.
7 Apply grease to 10 gear teeth on each side of
the "0" mark on the outside bearing.
8 Center the worm drive over the "0" mark on the
outside bearing and install the two 5/16 inch
fasteners. Hand tighten the bolts.
9 Push the worm drive towards the rotation
bearing to be as close as possible.
10 Position a dial indicator to measure the worm
drive in relation to the ring gear. Pull the worm
drive away from the rotate bearing 0.035
inches (0.889mm) ±0.020 inches (0.508mm).
11 Tighten the two 5/16 fasteners. Observe the
dial indicator to be sure that the worm drive
does not move.
12 Locate the 1 inch hex head on the end of the
worm gear housing. Turn the hex head to
rotate the worm drive until it is positioned within
the original reference marks on the chassis.
13 Position the turntable so that the flat side of the
turntable is parallel with the worm drive gear.
14 While lowering the turntable onto the chassis,
be sure that the milled area on the bottom
surface of the turntable does not contact the
top of the worm drive gear housing. If it is,
remove the turntable and grind the worm drive
gear housing until clearance is established.
7 - 52
15 Install the turntable mounting fasteners. Use a
torque wrench to tighten the fasteners in
sequence to specifications.
16
24
3
11
17
Specifications - torque
First rotation
Second rotation
Genie Z-45/22
Service Manual - First Edition
1
9
22
20
13
6
8
5
14
19
21
10
2
95 foot pounds
129 Newton meters
190 foot pounds
258 Newton meters
After re-assembly, the turntable
should swing smoothly without
jerking or grinding.
Part No. 29487
7
18
12
4
23
15