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Boom
5.4 Boom
5.4-1 Check the Wear Pads
1. Ensure the MEWP is on a firm level surface and
is in the stowed position.
2. Start the engine from the base control console.
3. Raise the main boom to a comfortable working
height (chest high), and then extend fly boom
approximately 30 cm (1').
4. Measure the thickness of each wear pad, and
replace the wear pad if it is less than 11 mm
(7/16").
5. If the wear pad is within the specified thickness,
shim it as necessary.
5.4-2 Shim the Wear Pads
1. Ensure the MEWP is on a firm level surface and
is in the stowed position.
2. Raise the main boom to a comfortable working
height (chest high) and extend the fly boom until
the wear pads are accessible.
3. Loosen the wear pad fasteners.
4. Shim the wear pads as necessary to obtain zero
to 0.8 mm (1/32") clearance and zero drag.
Shim
Wear Pad
5. Extend and retract the fly boom through the
entire range of motion and observe for loose
points.
NOTE
Always maintain squareness between the boom's
outer and inner tubes.
SJ85 AJ
Fly Boom
1/32" Feeler
Gauge
5.4-3 Rotary Actuator Bolt Torque
Procedure
WARNING
Maintaining proper torque is essential to safe
MEWP operation. Improper bolt torque could result
in an unsafe operating condition and component
damage.
1. Set the torque wrench to 25 Nm (17 ft-Ib) and
tighten the mounting bolts in a criss-cross
pattern sequence.
8
4
6
2. Set the torque wrench to 47 Nm (35 ft-Ib)
and tighten the mounting bolts with the same
sequence.
3. Torque the center bolt to 650 Nm (480 ft-lb).
Section 5 – Procedures
1
5
3
7
2
229044ADA
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