Manitowoc Grove GRT9165, Service Manual

Page: 179 / 302

6-19
Published 10-01-2020 Control # 699-00
GRT9165 SERVICE MANUAL SWING SYSTEM
6
GROVE
will stick out about 5.89 cm (2.32 in) from the bottom of its
bushing in the turntable; verify the superstructure can lock
properly and the superstructure can rotate without lock pin
hangup.
360° SWING LOCK CONTROL (POSITIVE
LOCK TYPE) (OPTIONAL)
Description
The purpose of the swing lock (1, Figure 6-7) is to secure the
superstructure in position at one of the positions in its
rotation. There are roughly 120 spots approximately3.0
degrees apart for the superstructure to lock to in its 360
degree of rotation. The 360 degree swing lock control lever is
on the right side of cab. Pushing the swing lock control lever
down engages the lock between the teeth of the swing gear.
Pulling the swing lock control lever up disengages the lock.
Maintenance
Verify cable is routed to avoid damage from superstructure
rotation and is undamaged. Verify swing lock assembly is
undamaged and working properly. Verify spring is
undamaged and has enough strength to pull blade of swing
lock assembly completely out of the gear teeth when the
control lever is up. Verify the linkage can put the blade of the
swing lock assembly as far as possible between the gear
teeth when the control lever is down. Verify all attaching
hardware is secure and undamaged. Make adjustments as
needed. When the lever is fully up, the top diagonal surface
of the blade of the swing lock assembly (the beveled surface
from the blade’s top horizontal surface to its “ax blade”
vertical surface should be 1.45 cm (0.57 in) from the tips of
the gear teeth.
If the swing lock assembly is damaged, install a replacement.
Align the blade of the swing lock assembly so it will fall
between gear teeth. Use the shim and the related attaching
hardware (two 5/16-18 screws and 5/16 ID lockwashers) to
ensure the swing lock assembly cannot move side to side,
and can lock up the superstructure. Torque the four 3/4-10
mounting bolts to their specified torque found in
Fasteners
and Torque Values , page 1-16.
SLEW SENSOR
The slew sensor assembly (1, Figure 6-9), located under the
o p e r a t o r c a b , c a l c u l a t e s t h e a n g l e o f t h e c r a n e
superstructure. Sensor readings are transferred over the
CANbus network and appear in the ODM.
FIGURE 6-7
10174
1
Gear Tooth
(typical)
Swing Lock
Assembly Blade
1.45 cm
(0.57 in)
FIGURE 6-8
7069
FIGURE 6-9
1
6 3
4
5
2
7
8
10175