When selecting desired GPM, allow for a ±5% tolerance on pumps output due to variations in pulleys, belts and motors among manufacturers. 1. Select GPM required, then select appropriate motor and pump pulley from the same line. 2.The desired pressure is achieved by selecting the correct nozzle size that corresponds with the pump GPM. HORSEPOWER INFORMATION We recommend that a 1.1 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsep

Exchange the oil fill and the oil drain plugs, also. Refer to the repair instructions as necessary for the proper assembly sequence. P22 R 3A HORSEPOWER REQUIREMENTS RPM GPM 1000 PSI 2000 PSI 3000 PSI* 1725 1.5 1.0 2.1 3.1 3000 2.6 1.8 3.6 5.4 3200 2.8 1.9 3.9 5.8 3450 3.0 2.1 4.1 6.2 *Pressure washer duty only SPECIAL NOTE: The theoretical gallons per revolution (gal/rev) is 0.000870 To find specific outputs at various RPM, use the formula: GPM = 0.000870 x RPM HORSEPOWER RATINGS:

The following information is to be considered as a general outline for installation. If you have unique requirements, please contact Giant Industries, Inc. or your local distributor for assistance. 1. The pump should be installed flat on a base to a maximum of a 15 degree angle of inclination to ensure optimum lubrication. 2. The inlet to the pump should be sized for the flow rate of the pump with no unnecessary restrictions that can cause cavitation. Teflon tape should be used to seal all joi

Remove the v-sleeve (23) from the seal case (20). 5. Next, use a 5mm allen wrench to remove the 8 socket head cap screws (34). Inspect all parts, including o-ring (21) for wear and replace as necessary Check surfaces of plunger (16). A damaged surface will cause accelerated wear on the seals. Deposits of any kind must be carefully removed from the plunger surface. A damaged plunger must be replaced! 6. Carefully slide the valve casing (26) out over the plungers. 12 9. If the crankcase oil

When selecting desired GPM, allow for a ±5% tolerance on pumps output due to variations in pulleys, belts and motors among manufacturers. 1. Select GPM required, then select appropriate motor and pump pulley from the same line. 2.The desired pressure is achieved by selecting the correct nozzle size that corresponds with the pump GPM. HORSEPOWER INFORMATION We recommend that a 1.1 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsep

Lubricate seals before replacing. 2) Replace seal case (20) with o-rings (21) over plungers. Generously lubricate o-rings and oil seal before reassembly. Replace v-sleeve (23) over plungers (16).. 3) Generously lubricate v-sleeve (23). Assemble v-sleeves (22) into valve casing (#26). Assemble weep return ring (25) and pressure ring (24) over plungers (16). Slide valve casing over plungers and seat firmly. Replace the eight socket head cap screws (34) and tighten to 105 inch-pounds in a crossin

The following information is to be considered as a general outline for installation. If you have unique requirements, please contact Giant Industries, Inc. or your local distributor for assistance. 1. The pump should be installed flat on a base to a maximum of a 15 degree angle of inclination to ensure optimum lubrication. 2. The inlet to the pump should be sized for the flow rate of the pump with no unnecessary restrictions that can cause cavitation. Teflon tape should be used to seal all joi

The plunger pipe (29B) should not be strained by over tightening of the tension screw (29C) or through damage to the front surface of the plunger; otherwise, it will probably break. 12. Place valve vasing (43) over studs and push firmly until seated against the crankcase (1). Tighten the hexagon nuts (49A) in a crosswise pattern (shown below) to 59 ft.-lbs. To Dismantle Gear End After removing valve casing (43) and plunger pipe (29B), drain oil. Remove gear cover (4) and bearing cover (14). L

Exchange the oil fill and the oil drain plugs, also. Refer to the repair instructions as necessary for the proper assembly sequence. HORSEPOWER RATINGS: The rating shown are the power requirements for the pump. Gas engine power outputs must be approximately twice the pump power requirements shown above. We recommend a 1.15 service factor be specified when selecting an electric motor as the power source. To compute specific pump horse power requirements, use the following formula: HP = (GPM X