Oasis Pump Repair

REPAIR AND ASSEMBLY MODEL NO. WI AND WP2-REMOVE PLUNGER AND COMPONENTS.

Remove handle and link assembly (bolts are 5/16 X 1 1/2 and 5/16 X 2 and may be replaced with any common/standard bolt) Remove 2 cap screws
Place the mounting cap lug in a vise with pump body in a horizontal position (a cloth or rag should be used on the jaws of vise to prevent marking the lug)
In the field if no vise is available this may be accomplished by inserting a screwdriver or other tool through the bolt hole in lug and holding by hand
With lug held securely place both hands on pump body turn counter clockwise pulling body away from cap.
Note: Model No Wl has no "0" ring and cap will remove easily with a turn and pull motion Model No WP2 has an "0" ring seal and fit tightly.
With cap and plunger assembly removed place flat head of plunger rod in a vise using cloth for protection. Again a screwdriver may be used by inserting through the hole in plunger rod.
Holding plunger rod place, a wrench or pliers on the bottom plunger nut, turn counter clockwise to remove. Pull plunger components off rod observing order of assembly.

REMOVE CHECK VALVE:

Use any socket extension (minimum length 10") and a 7/16 socket.
Hold or secure extension in a vertical position (socket up) and place pump body up-side down over socket.
Locate hex head on check in the socket, with wrench or pliers remove check valve nut turning counter clockwise.
With check valve assembly removed seating ring can be replaced by pulling it off the poppet (slip fit).

RE-ASSEMBLE:

In reverse order, out on check valve should be flush with end of stem.
Do Not run top nut on plunger rod past the threads.
Align location pin on plunger valves With this assembly in proper order tighten the bottom nut "snug" do not over tighten.
Place the bottom of pump body on a flat, solid surface and insert plunger assembly with cap.
Be careful to align cap with body to prevent damage to "0" ring. With a turning motion press down until cap is seated.
Align cap screw holes in body with those in the cap.

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