TM 9-2330-231-14&P
HYDRAULIC SYSTEM BLEEDING - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
NOTE
Use the manual bleeding procedure only if a pressure bleeder is not available.
The trailer must be connected to the towing vehicle to manually bleed brakes.
The following procedure is typical for both left and right wheels.
Always bleed the wheel cylinder farthest from the master cylinder first.
Always bleed the lower cylinder first on a dual wheel cylinder brake,
Check fluid level of master cylinder frequently during manual bleeding procedure
and replenish as required. Failure to keep filled will allow air to enter the
hydraulic system. Refer to the manufacturer's instructions for proper operation and
servicing of the pressure bleeder.
MANUAL BLEEDING
1.
Right wheel at
Tubing (2)
Push tubing onto bleed fitting.
lower cylinder
Tubing should be long enough to
bleed fitting (1)
reach ground when connected.
2.
Container (3)
Fill container half full with brake fluid
and position by wheel being bled.
3.
Tubing (2)
Submerge free end in brake fluid,
NOTE
Assistant should pump brake pedal slowly while brakes are bled. Make sure free
end of tubing stays submerged in fluid.
4.
Bleed fitting (1)
Using 7/16-inch wrench, open fitting three-
quarter turn.
Fluid and air will be forced through
tube. Continue until no more air bub-
bles appear in fluid.
5.
Bleed fitting (1)
Close fitting and remove tubing.
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