TM5-3805-260-24
out by the master cylinder piston causes the caliper
pistons to extend and apply the brakes. When the apply
force is released, a spring returns the master cylinder
piston and the brake fluid returns to the reservoir-
CAUTION
Always bleed air from the hydraulic brake
system when a line has been disconnected.
Quick Release Valve
The quick release valve releases the air from the
scraper rotochamber. The quick release have has three
positions. In the OPERATE position, pressure air goes
through, the valve into the rotochamber. In the HOLD
position, pressure air is held in the rotochamber. In the
RELEASE position, air in the rotochamber is released
through exhaust passage (5).
When the brake pedal is pushed down. pressure air
goes into the inlet passage t2) of the quick release valve.
The diaphragm (4) moves down, closing the exhaust
passage (5) The outer edges of the diaphragm are
pushed down against the resistance of spring (6).
Pressure air goes through the outlet passage (1) to the
rotochamber.
QUICK RELEASE VALVE
(OPERATE POSITION)
1. Passage to rotochamber. 2. Inlet passage. 3. Plug.
. 4. Diaphragm. 5. Exhaust passage. 6. Spring.
When the pressure below the diaphragm is the
same as the pressure above the diaphragm. spring (6)
moves the edge of the diaphragm up against the valve
body. The center of the diaphragm still covers the
exhaust passage (5). This is the HOLD position.
QUICK RELEASE VALVE
HOLD POSITION)
When the control valve for the service brakes is
released, air pressure on top of the diaphragm is
released. The air pressure in the rotochambers lifts the
diaphragm and opens exhaust passage (5). Air goes out
of the rotochambers through passage (1) to release the
brakes.
QUICK RELEASE VALVE
(EXHAUST POSITION)
Wheel Brakes
The friction pad (3) is pushed( against disc (6) to
provide brakes for the machine. The discs turn with the
hubs, and the calipers are connected solidly on the axle
flange. The brake assembly has to pistons and a friction
pad on each side of the disc. The pads and hacking are
held in place by anchor pins. When there is a brake
application, oil pushes the piston and pads against the
disc.
CAUTION
To prevent damage to pistons and seals, do
not push on brake pedal when brake pads are
removed.
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