SKYJACK, Page 105
SJRT Compact Series
Engine Powered
5.4 Wheel Bolt/Nut Inspection and
Torquing Procedure
It is necessary to check the torque on all wheel nuts and
wheel bolts at pre-delivery, after 8 hours of operation
and at weekly intervals using the following procedure:
1. Confirm that each wheel fastener is torqued to
80 ft. lbs. (± 5 ft. lbs.) using a suitable torque
wrench of known accuracy. If any fastener
falls outside of the specified tolerance, ALL
fasteners MUST be torqued using the tightening
sequence shown in Figure 5.1-3.
1
6
4
2
5
3
Figure 5.1-3. Bolt Torque Sequence
2. Again, confirm that each wheel fastener is
torqued to the specified tolerance. Re-torque
as necessary until ALL fasteners are properly
torqued.
5.5 Wheel Reinstallation and
Torquing Procedure
When a Wheel/Tire Assembly has been removed or
replaced, it will be necessary to follow the procedure
below to ensure proper installation:
1. Inspect wheel fastener threads for damage of
defects. Replace if defective.
2. Clean the mounting surfaces of the hub and
wheel rim of debris, rust, excess paint, etc.
3. Mount wheel on the hub, centering mounting
holes on the wheel studs or bolt holes. Use
appropriate lifting device as required.
4. Install the wheel nuts or wheel bolts and hand
tighten to center the rim.
5. Tighten the nuts or bolts to approximately 50 ft.
lbs. torque using the tightening sequence in Figure
5.1-3. above.
6. Tighten to 80 ft. lbs. using the same sequence.
7. Repeat the tightening sequence to confirm
that none have changed from 80 ft. lbs. If any
are found below 80 ft. lbs., repeat complete
sequence until there is no change in torque
values. If possible, drive the machine prior to
checking torques.
8. Check torque values after 8 hours of operation
and then at weekly intervals.
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