SECTION 8 –
MAINTENANCE AND STORAGE
8-23
SERVICE - BOLT TORQUE
Wheel Bolts
NOTE: If you do not have the proper
equipment to mount a tire, contact a
local qualified tire service center.
The tire should be mounted on the rim (as
shown in the following illustration) for
optimal traction and tread cleaning action.
To install wheel/tire assembly onto the
wheel hub:
1. Ensure threads are thoroughly cleaned of
rust and dirt.
NOTE: Threads should be dry (no lubricant).
2. Align the wheel bolt holes with the
wheel hub studs.
3. Mount wheel on the hub.
4. Start all of the lug nuts and tighten until
snug.
5. Following the torque sequence (as shown
the following illustration), turn each lug
nut to a torque value of 120 dry ft.-lbs.
NOTE: Use slow, even pressure on the
torque wrench. Quick or jerky
movements can cause inaccurate
values.
6. Repeat the same sequence to 150
dry ft.-lbs. and again to 400-500 dry ft.-
lbs.
NOTE: If the wheel turns during lug nut
torquing, lower machine to the
ground - just enough for the tire to
touch and prevent rotation. Or, more
preferably, place a suitable wedge
between the tire and the ground.
Lower the machine and resume
operation. Recheck torque after 30
minutes of operation.
7. When torquing is complete, lubricate
exposed threads with anti-seize com-
pound.
Hydraulic Tread Adjust Machines
-If Equipped
With the engine turned OFF, visually
inspect the tread bearing bolts on both the
bottom and side tread adjust bearing plates
every 50 hours of operation. Inspect the
torque every 100 hours of operation.
To check torque of the tread adjust
bearing bolts:
1. Loosen the jam nut on each tread adjust
bearing bolt.
NOTICE
Check lug nut torque immediately after
receiving the machine and every 50
hours of operation thereafter.
Torque Sequence
Summary of Contents for STS12i Combo
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