Troubleshooting; Pump Packing Leakage; Press Not Holding Pressure - Dake 75H Instructional Manual

Hand-operated hydraulic press

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TROUBLESHOOTING

If oil leaks past the pump packing, tighten the pump packing nut (item 9) until the pump handle

moves with resistance, then slack off just enough to cause the handle to stay in position by

itself. After long periods of operation, it may be necessary to install new pump packings.

This condition is nearly always caused by dirt under the pressure ball valve (item 2). See hand

pump assembly drawing.

Steps to fix pressure:

1. Remove the reservoir drain plug and drain all oil out of the reservoir.

2. Remove parts: pipe plug (item 18), check valve spring (item 6) and ball valve (item 2)

then clean out the port hole and valve seat thoroughly.

3. Using a small piece of brass rod as a drift, tap on the brass rod lightly to seat the ball

valve in place.

4. Replace the spring and plug with extreme care to prevent dirt from entering.

5. Replace the drain plug and refill the reservoir with clean filtered oil.

See "FILLING PRESS WITH OIL" section in manual for instructions.

907003

Dake Corporation

724 Robbins Road

Grand Haven, MI 49417

www.dakecorp.com

REV112019

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