JLG M600 Service Manual - Manual (Page 80)

SECTION 3 - CHASSIS & TURNTABLE
3-42 – JLG Lift – 3121813
5. Tighten the setscrew (3) until the pinion is com-
pletely snug against the shim and bearing and then
back off the setscrew.
6. Torque the setscrew to 50 ft.lbs. (70 Nm).
7. Tighten the jam nut (4).
8. Torque the four 3/4 inch capscrews (2) to 420 ft.lbs.
(588 Nm).
9. Remove and discard the shim.
3.9 SWING BEARING
Turntable Bearing Mounting Bolt Condition
Check
NOTE: This check is designed to replace the existing bear-
ing bolt torque checks on JLG Lifts in service. This
check must be performed after the first 50 hours of
machine operation and every 600 hours of machine
operation thereafter. If during this check any bolts
are found to be missing or loose, replace missing or
loose bolts with new bolts and torque to the value
specified in the torque chart, after lubricating the bolt
threads with loctite #271. After replacing and
retorquing bolt or bolts recheck all existing bolts for
looseness.
Check the frame to bearing. Attach bolts as follows:
1. Elevate the fully retracted boom to full elevation and
rotate platform 90 o .
2. Swing turntable over the side.
3. On the frame, at the rear of the turntable, try to insert
the 0.0015" feeler gauge between the bolt head and
hardened washer at the indicated position. (Figure
3-25., Swing Bearing Feeler Gauge Check)
4. Assure that the 0.0015" feeler gauge will not pene-
trate under the bolt head to the bolt shank.
5. Swing the turntable 90 degrees, and check some
selected bolts at the new position.
6. Continue rotating the turntable at 90 degrees inter-
vals until a sampling of bolts have been checked in
all quadrants.
7. Lower the boom to horizontal and fully extend the
boom.
8. Swing the turntable over the side.
9. On the frame, at the front of the turntable, try to
insert the 0.0015" feeler gauge between the bolt
head and hardened washer at the indicated posi-
tion.
10. Assure that the 0.0015" feeler gauge will not pene-
trate under the bolt head to the bolt shank.
11. Swing the turntable 90 degrees, and check some
selected bolts at the new position.
12. Continue rotating the turntable at 90 degrees inter-
vals until a sampling of bolts have been checked in
all quadrants.
Check the turntable to bearing. Attach bolts as follows:
1. Elevate the fully retracted boom to full elevation and
rotate the platform 90 o .
2. Swing the turntable over the side.
3. At turntable rear, try and insert the 0.0015" feeler
gauge between the bolt head and hardened washer
at the arrow indicated position.