Pump Disassembly and Rebuild, Check Valve

PUMP DISASSEMBLY AND REBUILD

Agitator Bar

1)Insure the tank and pressure chamber contents are emptied and pressure has been released in the pressure chamber. To release pressure in the pressure chamber activate shut-off valve and release all pressure.

Figure 1

Boot

Retainer

Nut

		Ball

	Figure 2

		Pressure
		Chamber
Pump
Locking
Ring

	Figure 3

Pressure	Plunger	Check
Chamber	Cup	Valve

Pump Handle Clip

Figure 4

Flat side

Seal Ball

Counterbore Side

Figure 5

2)Reach into tank fll opening and remove agitator bar from pressure chamber body (Figure 1).

3)Disconnect linkage arm from the top of the pump assembly (see section covering Installing The Pump Handle). (Figure 2).

4)Loosen pump locking ring and remove entire pump assembly from tank (Figure 3).

Check Valve

Remove check valve cartridge assembly from bottom of pressure chamber utilizing pump handle clip (clip has fat blade incorporated into end). Place fat blade into slot in bottom of cartridge and unscrew. Once cartridge has been removed it can either be replaced as an assembly or rebuilt. To rebuild disassemble two halves of cartridge and replace seal and/or ball (Figure 4 and 5). The seal mounts inside the larger of the two halves of the cartridge. The seal counterbore side mounts into the grooves in the cartridge halve. Pump performance my be affected if this is not assembled correctly.

Plunger Cup

Once the check valve has been removed the plunger cup can be replaced as the check valve housing holds the plunger cup in place to the bottom of the pressure chamber body. The bottom of the pressure chamber body has a groove in it to accept the raised ring on the plunger cup. It is important to insure that these two surfaces are aligned and mated before tightening the check valve. Pump performance may be affected if this is not assembled correctly.