Manitowoc Grove GRT9165, Service Manual

Page: 235 / 302

8-21
GRT9165 SERVICE MANUAL UNDERCARRIAGE
8
Published 10-01-2020 Control # 699-00 GROVE
Caliper
1. Position the caliper housing on the mounting bracket. If
shims where used, place them as marker during
removal.
2. Secure the caliper housing with the bolts and tighten
them to 678 N-m to 813 N-m (500 lb-ft to 600 lb-ft).
3. Install the linings. Refer to Linings , page 8-15.
4. Ensure the housing is installed correctly on the mounting
bracket. The disc must be within ±1.5 mm (±0.06 in) of
being centered between the lining end plates.
a. To increase outboard clearance and decrease
inboard clearance, install a shim either between the
housing and mounting bracket or between the hub
and disc.
b. The shims must be steel, ground flat, and parallel
and must cover the entire mounting surface of the
hub or housing. The linings must move freely in the
housing and between the end plates. Refer to
Figure 8-25.
5. Connect the hydraulic brake line to the inlet fitting.
6. Bleed the brake system.
7. Apply and release the brakes three times to ensure the
caliper operates correctly. Check for fluid leaks. Ensure
the linings move freely.
PARKING BRAKE
The parking brake is mounted on the front axle input shaft in
line between the front axle and the driveline from the
transmission. The brake is a disc-type brake that is
controlled by a switch on the steer column in the cab.
PARK BRAKE SOLENOID VALVE
The park brake solenoid valve is part of the Carrier Manifold
Valve. Refer to
Carrier Manifold Valve , page 2-25 for a
description of the park brake solenoid valve, its function, and
maintenance information.
OUTRIGGER
Outrigger Circuit
The outrigger circuit consists of four extension cylinders, four
jack cylinders, an extend/retract directional control valve,
front and rear outrigger control manifolds, and an Outrigger
Monitoring System (OMS). The front two extension cylinders
are mounted in the front outrigger beams and the rear two
extension cylinders are mounted in the rear outrigger beams.
The front and rear outrigger beams are mounted on their
respective outrigger boxes; in turn the jack cylinders are
mounted on the end of each outrigger beam. The extend/
retract directional control valve is part of the carrier manifold
valve, which is mounted to the inside carrier frame rail at the
turntable bearing. The front and rear outrigger control
manifolds are mounted on the inside center of their
respective outrigger box. The OMS consists of a sensor
inside each outrigger extension cylinder. The sensor detects
the position of the outrigger extension cylinder piston and
reports data to the RDM in the operator cab.
The Carrier Manifold Valve controls the supply of hydraulic
oil to the outrigger manifold valves that control outrigger
extension cylinder and jacks. The outrigger manifold valves
are electrically actuated through operator inputs made at the
ODM display or jog dial in the operator cab.
Disc Centered
Between Linings
FIGURE 8-25