224
229042ABA SJ46 AJ+, SJ46 AJ, SJ51 AJ
Section 5 – Procedures Turret
5.5-7 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 with
the ground.
2. Extend the boom to its full length.
3. Mount a dial indicator on the chassis. Place the
dial indicator directly under the boom, close to
the bearing teeth. Be 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.
Note: 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.
8. With the boom assembly rotation stopped and
the boom centered over the rear axle, read
the dial indicator and record the reading. This
reading is the total amount of axial movement in
the bearing assembly. If this reading is 0.100”
(2.54 mm) or greater, the rotation bearing should
be removed and replaced.
5.5-8 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 115 Nm (85 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
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 230 Nm (170 ft-Ib)
and tighten the mounting bolts with the same
sequence.
To order go to Discount-Equipment.com
To Next Page
Loading...
Need help?
General
