TM 5-3805-281-24-1
Tests
5. Disconnect swing motor drain line (A) at the return
manifold (B). Install a cap on elbow. Put drain line in a
calibrated container.
CAUTION: To avoid personnel injury, clear area
of all bystanders before doing test. Slowly
swing through one complete revolution to
ensure that the area is clear of objects before
doing test.
6. Raise and lower boom to pressurize hydraulic tank.
7. Operate the machine at specifications.
Engine--Specification
Engine........................................................................................... Fast Idle
Work Mode Selector--Specification
Position ........................................................................................ Dig Mode
E Mode Switch--Specification
Position .................................................................................................. Off
HP Mode Switch--Specification
9025
Position .................................................................................................. Off
25
138
Auto-Idle Switch--Specification
Position .................................................................................................. Off
8. Operate swing function for one minute. Record the
amount of leakage. Repeat for swing in opposite
direction.
9. Operate swing function at stall for one minute. Put the
bucket against an immovable object or in a trench then
hold swing control lever fully actuated to stall swing
function. Record the amount of leakage.
Repeat procedure by stalling the motor in several
position. Repeat procedure in the opposite direction.
10. Compare amount of leakage to specifications.
A--Swing Motor Drain Line
Continued on next page
CED,TX08227,3148
1930MAY983/4
6-285
