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Boom
5.4 Boom
5.4-1 Check 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 1 ft (30 cm).
4. Measure the thickness of each wear pad, and
replace wear pad if it is less than 7/16 inches
(11mm).
5. If the wear pad is within the specified thickness,
shim it as necessary.
5.4-2 Shim 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 1/32"(0.8 mm) 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.
SJ82 T, SJ86 T
Fly Boom
1/32" Feeler
Gauge
5.4-3 Cable Carrier Repair
To repair the cable carrier, simply use a screwdriver.
Snap each crossbar off from either side of the chain,
either by hand or by using the screwdriver as a lever.
Install new crossbars by snapping the links together.
Female Side
Crossbar
5.4-4 Rotary Actuator Bolt Torque
Procedure
WARNING
Maintaining proper torque is essential to safe
aerial platform operation. Improper bolt torque
could result in an unsafe operating condition and
component damage.
1. Set the torque wrench to 17 ft-Ib and tighten the
mounting bolts in a cross pattern sequence.
8
4
6
2. Set the torque wrench to 35 ft-Iband tighten
mounting bolts with the same sequence.
3. Torque the center bolt to 480 ft-lb.
Section 5 – Procedures
Male Side
1
5
3
7
2
229040ABA
181
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