U20-3, U25-3 WSM Hydraulic system (Service section)
IV-S-37
[2] Swivel motor
2) Measuring procedure
1. Disconnect the drain hose using the vacuum
pump as shown in the photo.
2. Plug the tank-side hose which has been
disconnected.
3. Dismount the vacuum pump.
4. Bring the front attachment into travel posture
and hold up the bucket 1 m above the ground.
5. With the engine running at maximum rpm, do
the swiveling for 1 minute and measure the
amount of oil collected in a container.
6. Repeat the pressure measurement 3 times,
obtain the average and adopt it as measured
value.
Caution:
Pay full attention to the surrounding during
swiveling.
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