Skyjack SJ63 AJ+ Service Manual

238
SJ63 AJ+, SJ63 AJ229043AAA
Section 5 – Procedures Turret
5.5-6 Check Rotation Bearing for Axial
Wear
1. Position the boom so that it is centered over the
front drive and steer axle and is horizontal to the
ground.
2. Extend the boom to its full extension length.
3. Mount a dial indicator on the chassis. Place
the dial indicator set directly under the boom,
close to the bearing teeth. Make sure to allow
clearance as the turret assembly rotates.
4. Position the indicator arm or shaft so the
pointer touches the bottom surface of the turret
weldment.
TURRET
CHASSIS
5. Zero the dial indicator.
6. Rotate the turret 180° in the clockwise direction
until the boom is centered over the rear axle
(rotating the turret in the counterclockwise
direction will cause the rotation gearbox pinion
to impact the dial indicator).
7. If, when you are rotating the turret, the boom
needs to be retracted or raised to avoid
obstacles, be sure to again fully extend and
level the boom when it is positioned over the
rear axle. Do not be concerned with any dial
indicator readings as the turret assembly rotates.
5.5-7 Turret Rotation Gear Bolt Torque
Sequence
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 190 Nm (140 ft-lb)
and tighten the mounting bolts in a criss-cross
pattern sequence.
5
4
21
20
19
9
8
7
15
14
13
3
2
1
20
16
12
8
4
18
14
10
6
2
19
15
11
7
3
17
13
9
5
1
24
23
22
12
11
10
18
17
16
6
2. Set the torque wrench to 380 Nm (280 ft-Ib)
and tighten the mounting bolts with the same
sequence.
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Skyjack SJ63 AJ+ Specifications

General

Brand	Skyjack
Model	SJ63 AJ+
Category	Boom Lifts
Language	English