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TM 9-2320-356-BD
Limitations:
o Degraded braking
o Reduced speed
o Uneven braking
Personnel/Time Required:
o 1 soldier
o 30 minutes
Materials/Tools:
o Tie wire
o Tubing cutter
o Hacksaw
o Sidecut pliers
o Visegrip pliers
Procedural Steps:
NOTE
Refer to chapter 3 for repair procedures for
hydraulic lines.
1.
Find the split or break in the line.
2.
Cut the line in front of the break.
3.
Fold 2 inches of the line back and crimp it together.
4.
Fold the crimped portion in half and crimp it again.
5.
Wire the line to the nearest stationary place.
6.
Check fluid level in the reservoir.
If brake fluid is not available, refer to
paragraph 11-9 for substitute fluids.
7.
Record the BDAR action taken.
When the mission is completed, as soon as
practicable,
repair using standard maintenance procedures.
11-7.
BRAKE CYLINDER FAILURE
General Information:
The wheel cylinder, mounted on the backing plate assembly at both ends of each axle
assembly, consists of two opposed rubber cups and pistons enclosed in a cast
housing.
The fluid forced from the air hydraulic cylinder enters the wheel
cylinder at a point between the rubber cups and pistons.
This causes the cups and
pistons to move outward to exert pressure through the push rods on the upper ends
of the brakeshoes.
Fluid leakage around the pistons and cups is the biggest factor
in brake cylinder failure.
This will cause erratic braking due to fluid
contamination of the brakeshoe linings.
11-4
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