Tennant 92 GR, Operator'S Manual

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92GR MM188 (11---87)
3-65576
BRAKES AND TIRES
SERVICE BRAKES
The service brakes are hydraulically activated by a
master brake cylinder. Check the master brake
cylinder fluid level after every 400 hours of operation
and add brake fluid as needed. The master brake
cylinder is located at the front of the machine, behind
the hopper.
If necessary, adjust the brake clevis on the master
cylinder push rod so that the brake pedal is in a
horizontal position when the cylinder push rod starts
to engage the cylinder piston.
A
B
C
01495
BRAKE PEDAL
A. Brake Pedal
B. Brake Clevis
C. Master Cylinder Push Rod
Brakes require bleeding whenever air enters the
system, lowering the effective braking pressure. Air
can enter when the master cylinder or wheel
cylinders are serviced or if the fluid in the reservoir
runs dry. Air can also enter through a leaky brake
line or hose. Find the leaking line and replace it
before bleeding the system.
Whenever handling brake fluid, do not get any on
the brake pads, brake drums, or body paint. Brake
pads will be permanently damaged, requiring
replacement. Body paint can be damaged also
unless you wipe the area with a clean cloth and
wash it with soapy solution immediately.
1. Make sure that the brake fluid reservoir is full
and that the vent in the cap is open.
2. Connect a plastic or rubber tube to the bleeder
valve on the left front wheel. Suspend the other
end of the tube in a jar or bottle filled with a few
inches of brake fluid. During the remaining
steps, keep this end submerged at all times
and never let the level in the brake fluid
reservoir drop below one half full.
3. Open the bleeder valve on the left front wheel
about one turn. Have an assistant press the
brake pedal slowly to the floor. As soon as the
pedal is all the way down, close the bleeder
valve and let the pedal up. Repeat this step as
many times as necessary, until fluid, free of air
bubbles, exits from the tube.
4. Bleed the right front wheel in the same manner
as described in the steps above. Keep
checking the brake fluid reservoir to be sure it
doesn’t run out of fluid.
5. When all wheels are bled, discard the brake
fluid in the jar or bottle; never reuse such fluid.
6. Top up the brake fluid reservoir with clean fluid.