Axles; Description - Manitowoc RT9150E Service Maintenance Manual

RT9150E SERVICE MANUAL
SECTION CONTENTS

Axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Wheel Alignment Check Procedure . . . . . . . . . . . 8-3
Rear Wheels Not Centered Switch Adjustment
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Wheels and Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Steering Systems . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . 8-5
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Hydraulic Pump . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Front Steering Control Valve. . . . . . . . . . . . . . . . . 8-8
Integrated Outrigger/Rear Steer Control Valve. . . 8-8
AXLES
Description
To provide maximum maneuverability, both the front and rear
axles are steerable. The rear axle is mounted on a pivoting
cradle (fifth wheel) which allows the axle to oscillate while
traversing uneven terrain. The front axle is bolted directly to
the frame. All four wheels utilize a hydraulic braking system.
Cranes are equipped with disc type brakes. A disc-type
parking brake is mounted on the front axle input shaft.
Each axle incorporates a single reduction carrier with hypoid
gearing mounted in the axle center. The final reduction is of
planetary design spur gearing built into the wheel hubs.
The design of these axles permits the hypoid gearing of the
differential carrier and the axle shafts to carry only a nominal
torsional load while at the same time providing the highest
practical numerical gear reduction at the wheels.
The hypoid pinion and differential assembly of the first
reduction are supported by tapered roller bearings. The
GROVE
SECTION 8
UNDERCARRIAGE
Steer Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Rear Axle Oscillation Lockout System. . . . . . . . . . 8-9
Axle Oscillation Lockout Cylinders. . . . . . . . . . . . 8-11
Axle Oscillation Lockout Valve. . . . . . . . . . . . . . . 8-11
Brake System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . 8-12
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
Service Brakes. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
Parking Brake Actuator . . . . . . . . . . . . . . . . . . . . 8-20
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
Park Brake Solenoid Valve . . . . . . . . . . . . . . . . . 8-22
Outriggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . 8-23
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Outrigger Monitoring System (Optional-
Standard in North America) . . . . . . . . . . . . . . . . . 8-32
pinion bearing preload is adjusted and maintained by a
hardened precision spacer between the inner and outer
bearing. The differential tapered bearing preload is adjusted
and maintained by the positioning of the threaded adjusting
rings in the carrier leg and cap bores.
In the planetary wheel ends, the spur teeth of the sun gear
mesh with teeth of the planet spur gears. The planet spur
gears rotate on planet pins which are mounted in a spider.
The planet spur gear teeth in turn mesh with teeth of the
floating ring gear.
Power is transmitted by the hypoid gear set in the differential
carrier to the axle shafts and the sun gear of the final
reduction, through the revolving planet gears, and into the
planetary spider which drives the wheel hub.
As an option, the front axle and rear axle may be provided
with a differential lock. When in the locked mode, the axle
shafts and the differential are locked together and there is no
differential action between the wheels.
Published 1-16-2017 Control # 343-07
UNDERCARRIAGE
8-1
8