|
| |
TM 9-2320-356-BD
Section II. HYDRAULIC COMPONENTS
14-4. GENERAL
The hydraulic components that will be discussed in this section will be the
hydraulic pump, motors, control valve, high-pressure hoses and tubes, and reservoir
a n d f i l t e r.
BDAR for a hydraulic system is generally confined to component
replacement,
expedient line repairs,
or bypassing damaged lines.
If a hydraulic
circuit cannot be repaired,
it may be necessary to isolate it (cut it off) from the
system to permit operation of some other hydraulic functions.
Damaqe to the
hydraulic system usually requires replenishment of lost fluids.
WARNING
Hydraulic fluid under pressure can cause death
or injury to personnel.
Bring hydraulic system
to zero pressure before making repairs.
14-5.
HYDRAULIC PUMP DAMAGED OR INOPERATIVE
General Information:
Hydraulic pumps can have a multitude of failures.
Repairs can be accomplished only
by replacement with a serviceable part.
An alternate source of supply for the pump
is foreign-owned equipment (refer to appendix C).
14-6.
SWING HYDRAULIC MOTOR AND GEARBOX DEFECTIVE OR DAMAGED.
General Information:
If the hydraulic swing motor becomes inoperative, the wrecker crane can still be
used to perform most of its functions.
The crane will not have its side-to-side
l i f t c a p a b i l i t y.
The swing motor may have to be isolated if there are leakage
problems.
Swing motor failure can have a multitude of causes. Repairs can be
accomplished only by replacement with a serviceable part.
Limitations:
o
No
side-to-side
rotation
Personnel/Time Required:
o 1 soldier
o 20 to 30 minutes
Materials/Tools:
o Adjustable wrench
o Plugs
14-4
|
