7032 SOUTH 196th - KENT, WA 98032 - (253) 872-0141 / FAX (253) 872-8710
OPERATION / MAINTENANCE MANUAL
MODEL 50 VIBRATORY HAMMER WITH MODEL 260 POWER UNIT
V. MAINTENANCE (Continued...)
V7-B. Power Unit - Hydraulic Fluid
When adding or changing hydraulic fluid APE uses only Mobil 224 Hydraulic Vegetable oil which is
non-toxic and will not harm oil or water and is biodegradable. Consult your local oil supplier for
recommendations on mixing hydraulic oils. Change hydraulic oil if it looks milky. This includes all
hydraulic lines leading to and from the vibro. Milky oil indicates that water is in the oil.
V7-C. Power Unit - Draining and Filling Hydraulic Fluid Tank
1. Remove plug located on bottom of tank
2. Refill by manually pumping with hand crank.
3. Prime both the clamp and the main pump before restarting.
4. Take extreme caution that no dirt or other unwanted particles enters the system.
V7-D. Power Unit - Cleaning Hydraulic Tank Suction Filter (No suctions on 1993 and newer)
1. Located inside the hydraulic tank or reservoir, is a suction filter.
2. Drain tank.
3. Remove side cover.
4. Reach into tank and unscrew filter from pipe fitting.
5. Clean with solvent and re-install. If damaged then replace.
6. Re-install filter.
7. Re-install tank cover.
8. Add new oil to tank.
9. Prime pumps.
Page 5-4
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