Braking System - Goldacres Crop Cruiser G6 Operator's Manual

Braking System

The braking system used on this machine is a split
system consisting of four rotors with one caliper
per rotor. These calipers are powered by an air over
hydraulic system. The front two calipers are powered
off one master cylinder and the rear calipers are
powered off a second master cylinder.
Rotors
The rotor used on the crop cruiser sprayers are a
customized construction and must be purchased
from your local Goldacres dealer. They are a 600 mm
diameter rotor that is fitted to the hub on the inside
of the wheel.
Calipers & Pads
The calipers used on the Crop Cruiser sprayers have
two brake pads which clamp on to the rotor when
the brakes are applied. These pads must be inspected
regularly for wear. When the pads wear down to the
indicator grove they must be replaced. Build up of
mud and debris will cause the brake pads to wear
prematurely for this reason the brake calipers must
be kept clean at all times.
Brake Boosters
Both brake boosters are located in the pod on the
right hand side of the sprayer. The booster closest
to the front is used to power the front brakes and
the rearward booster powers the rear brakes. To
maintain sufficient brake fluid in the system, each
brake booster reservoir must be checked regularly.
Brake Bleeding
The braking system is an air over hydraulic
configuration. The front and rear brakes are
operated from two separate brake boosters and
reservoirs. The boosters are located in the module
on the chassis on the drivers side.
To bleed the brakes, there must be sufficient air
pressure. Each brake caliper must then be bled
separately.
MANUAL BLEEDING METHOD
1. Connect a clear plastic tube to the bleed screw
and place the opposite end of the tube into a
container
NOTE:
• Fill the container with approximately 30 mm of
brake fluid and then submerge the end of the
plastic tube in the fluid. This is important to stop
G4.7, G5, G6 Crop Cruiser Operator's Manual MY19 - REV 0
air being drawn back through the system.
• The system should be bled until no more air
bubbles appear in the container.
• It is recommended that during this process the
person bleeding the brakes wear suitable eye
protection.
2. With an assistant, loosen the bleed screw and
then slowly depress the brake pedal. When the
brake pedal reaches its full travel re-tighten the
bleed screw before allowing the pedal to return
to its released position. Continue this process
until the air in the system stops bubbling up in the
container and a continuous stream of fluid can be
seen leaving the bleed screw.
3. Repeat this procedure for each of the other brake
assemblies.
NOTE: Ensure that at all times the fluid level in the
reservoirs remain above the minimum mark.
If the desired result is not achieved after completing
this process then the brake system must be pressure
bled.
Chapter 10 - Lubrication & Maintenance - 127