Manitowoc Grove CD3340B User Manual

GROVE 10-1
CD3340B/YB4411 STEERING SYSTEM
10
Published 04/07/2015 Control # 569-00
SECTION 10
STEERING SYSTEM
SECTION CONTENTS
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Service Brake System. . . . . . . . . . . . . . . . . . . . . . 9-2
Parking Brake System . . . . . . . . . . . . . . . . . . . . . 9-3
Maintenance and Adjustments . . . . . . . . . . . . . . . 9-4
Service Brake Bleeding . . . . . . . . . . . . . . . . . . . . 9-4
Parking Brake Bleeding . . . . . . . . . . . . . . . . . . . . 9-4
Parking Brake Adjustment . . . . . . . . . . . . . . . . . . 9-5
Accumulator Charging . . . . . . . . . . . . . . . . . . . . . 9-5
Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Brake Piston Seal Leakage Test . . . . . . . . . . . . . 9-5
Service Brake Repair . . . . . . . . . . . . . . . . . . . . . . . 9-7
Parking Brake Repair . . . . . . . . . . . . . . . . . . . . . . . 9-7
Lining Kit Replacement . . . . . . . . . . . . . . . . . . . . . 9-7
Repair Kit Installation. . . . . . . . . . . . . . . . . . . . . . . 9-8
Seal Kit Installation . . . . . . . . . . . . . . . . . . . . . . . 9-10
Brake Modulating Valve Repair . . . . . . . . . . . . . . 9-12
Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
Service Brakes. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
TECHNICAL DATA
Rated pump output...............................37.1 Lpm at 2500
rpm (9.8 gpm at 2500 rpm)
Relief valve setting........................17 225 ± 345 kPa at 2500
rpm (2500 ± 50 psi at 2500 rpm)
Steering Proximity Switch Setting..............3.2 - 5.6 mm (1/8 -
7/32 in)
DESCRIPTION
General
The main components of the steering system are the
hydraulic pump (Figure 10-1), the priority flow control valve,
the load sensing steering orbitrol, hydraulic tank, one front
steering cylinder, two rear steering cylinders and the steering
select valve.
When the steering wheel is turned, a pressure demand is
sensed by the priority flow control valve through load sensing
line between the priority flow control valve and the flow
sensing steering orbitrol.
Oil from the hydraulic pump is then distributed through the
priority flow control valve and a check valve to the steering
orbitrol.
When a turn is made, oil is distributed from the steering
orbitrol directly through the steering select valve and/or to
the steering cylinders.
When the steering orbitrol is neutral, the load sense signal is
ceased, full pump flow is then distributed to the outrigger and
brake circuits through the priority flow control valve.
Maximum steering system pressure is controlled by a relief
valve in the priority flow control valve.
Steering Modes
The crane can be operated in three steering modes.These
modes are selected using the steering selector switch
located to the right of the operator on the side instrument
panel. The three modes are:
• Two-wheel steering
• Four-wheel steering
• Crab steering
Reference Only

Manitowoc Grove CD3340B Specifications

General

Brand	Manitowoc
Model	Grove CD3340B
Category	Construction Equipment
Language	English