TM 5-3810-306-34
6. INSTALL RIGID PIPING AND CLAMPS (14).
Port
Test
Number
Pressure
Function
a. Connect tagged piping to bottom of
hydraulic swivel.
1
500 psi
Drain Line
(3, 447.5 kPa/
b. Secure piping with pipe clamps (14), bolt
34.5 bar)
inserts (15) and capscrews (13).
2
2500 psi
Rear Steer
(17, 237.5 kPa/
PRESSURE TEST:
172.5 bar)
3
2500 psi
Rear Steer
NOTE
(17, 237.5 kPa/
172.5 bar)
4
2500 psi
Front Steer
Use only 10W hydraulic oil during
(17, 237.5 kPa/
pressure testing.
172.5 bar)
1. PRESSURE TEST SWIVEL PORTS.
5
2500 psi
Front Steer
(17, 237.5 kPa/
NOTE
172.5 bar)
6
2500 psi
Front Steer
Each port on spool (4) and barrel (5)
(17, 237.5 kPa/
Supply
is stamped with port number.
172.5 bar)
7
1500 psi
Swing
a. Install a pressure gauge into a port on
(10, 342.5 kPa/
swivel case.
103.4 bar)
8
2500 psi
Lift, Rear
b. Install a pressure line in corresponding
(17, 237.5 kPa/
Steer Tele
port in swivel spool.
172.5 bar)
9
2700 psi
Main Hoist and
c. Allow ports on each side of the port to be
(18, 616.5 kPa/
Aux. Hoist Boost
tested to vent in order to detect leakage.
186.2 bar)
10
2700 psi
Main Hoist
d. Pressurize port to be tested while rotating
(18, 616.5 kPa/
Boost, Aux.
either spool or case 360 degrees.
186.2 bar)
Hoist and Lift
Boost
e. If leakage is detected disassembly swivel
and determine cause.
11
500 psi
Dual Return
(3, 447.5 kPa/
f. Pressure check each port individually until
34.5 bar)
all parts have been tested.
g. Test ports with following pressures:
END OF TASK
15-112
