TM 9-2330-287-14&P
HYDRAULIC SYSTEM BLEEDING - CONTINUED
ACTION
ITEM
REMARKS
LOCATION
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
Tubing (2)
Push tubing onto bleed fitting.
1. Right wheel at lower
Tubing should be long enough to
cylinder bleed
reach ground when connected.
fitting (1)
Container (3)
Fill container half full with brake fluid
2.
and position by wheel being bled.
Tubing (2)
Submerge free end in brake fluid.
3.
NOTE
Assistant should pump brake pedal slowly while brakes are bled.
Bleed fitting (1)
Using wrench, open fitting three-quarter
4.
turn.
Fluid and air will be forced through
tube. Continue until no more air hub.
bles appear in fluid.
Bleed fitting (1)
Close fitting and remove tubing.
5.
NOTE
Steps 1 thru 5 should be repeated for upper wheel cylinder and both cylinders on right
wheel.