MTS Series 298 Hydraulic Service Manifold - Manual (Page 36)

Series 298 Hydraulic Service Manifold 36
Replacing the Filter
Maintenance
Replacing the Filter
The filter element should be replaced whenever:
• The indicator on the top of the filter housing is in the bypass position, which
indicates a dirty filter condition.
• The hydraulic fluid in the hydraulic power unit is changed.
Replace the filter element with one of the same rating or better.
To change the filter element:
1. Ensure that system hydraulic pressure has been reduced to zero before
proceeding. To do this, turn off the hydraulic power unit and exercise the
actuator until it stops moving.
2. Turn off electrical power at the controller.
3. Place a waste fluid pan beneath the filter housing, which will accumulate
any small amount of drainage from the filter housing.
4. Remove the inlet filter bowl.
5. Remove the disposable filter element from the filter bowl.
6. Empty the oil in the filter bowl into the pan. Wipe out any remaining
sediment with a clean lint-free cloth.
7. Inspect the O-ring in the filter housing for any sign of deterioration. If
necessary, replace the defective O-ring (part number 010-010-726).
8. Lubricate the filter element and filter housing O-rings with clean hydraulic
fluid. Insert the replacement filter element into the filter bowl. Tighten the
filter bowl to 34–41 N·m (25–30 lbf·ft).
9. Apply low, then high, hydraulic pressure to the actuator manifold and
inspect the seal between the filter bowl and housing for any signs of
leakage. If leakage exists, turn off system hydraulic and electrical power and
repeat Steps
4 through 9 .
F
ILTER
P ART N UMBER K IT N UMBER
3 micron (Beta 3 = 75) 011-395-937 044-205-301
10 micron (Beta 7.4 = 75) 011-395-936 044-205-201