Boss Hand Pump PHAH1000

Pump oil should be changed twice a year. The following conditions require more frequent oil changes:

• Rigorous duty, where oil may leak out or become contaminated.

• Highly humid environment and extreme changes in temperature that can result in condensation inside the reservoir.

• Dirty or dusty environments that may contaminate the oil.;

Check oil regularly and add oil if required. Refer to procedure below:

• Place pump in the horizontal position on a level surface.

• Remove oil fill plug from reservoir.

• Check oil level (see figure below). If oil level is low, add additional oil until level is touching the bottom on the thread.

• Reinstall the oil fill plug into the reservoir. Ensure the plug is fully tightened.

• Remove air from the system if necessary and recheck the oil level.;

If you suspect your pump has been contaminated or discover sludge or other deposits on internal components, you should thoroughly flush the pump.

• Remove the old oil from the reservoir, then thoroughly clean and refill with nonflammable flushing oil.

• Reassemble the pump head to the reservoir and pump the handle approximately 50 times with the release screw open.

• Empty the reservoir and refill with clean hydraulic oil (BOSS recommends and uses grade 46 oil).;