(=suction head) and water temperature 220 GL4 (e.g. Aral Degol BG220) or SAE 90 must be respected. GL4 gear oil (Giant’s part number 01154). Initial oil change after 50 operating hours and Cavitation and/or compression of gases then every 500 hours, after 1 year if used less.
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P420A-5100 / P422-5100 / P423-5100 and P425-5100 SPARE PARTS LIST A = P420A-5100 B = P425-5100 C = P422-5100 D = P423-5100 ITEM PART DESCRIPTION QTY. ITEM PART DESCRIPTION QTY. 08377 Crankcase 08399-0100 Tensioning Screw 08378 Oil Fill Plug with Gasket 07023-0001 O-Ring, Viton 06479...
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Specifications Model P425-5100 U.S. (Metric) Volume................Up to 10.7 GPM ...... (40.4 LPM) Discharge Pressure ............Up to 2500 PSI ......(170 bar) Power Required ..............18.1 BHP ........13.5 kW Inlet Pressure ..............-4.35 to 145 PSI ....(-0.3 to 10 bar) Stroke ................0.787” ..........(20mm) Crankshaft Speed .....................Up to 1450 RPM Plunger Diameter............0.98”...
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Repair Instructions - P420A-5100/P422-5100/P423-5100 and P425-5100 Note: Always take time to lubricate all metal and nonmetal parts with a light film of oil before reassembly. This step will ensure proper fit, at the same time protecting the pump nonmetal parts (i.e., the elastomers) from cutting and scoring. 1) With a socket wrench, 2) Using needle nose pli- 3) By inserting a small screw remove the three dis- ers, remove the inlet and driver between the valve charge valve plugs and discharge valve assem- seat (27) and the valve three inlet valve plugs...
Repair Instructions P420A-5100 / P422-5100 / P423-5100 and P425-5100 IMPORTANT! Plunger surfaces are not to be damaged. If there are lime deposits in the pump, care must be taken that the drip-return bore in parts (25) and (26) ensure trouble-free drip-return.
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Replace plungers Inlet pressure too high Reduce inlet pressure High Crankcase Wrong Grade of oil Giant oil is recommended Temperature Improper amount of oil in crankcase Adjust oil level to proper amount Preventative Maintenance Check-List & Recommended Spare Parts List...
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Liability under this warranty is on all non-wear parts and limited to the replacement or repair of those products returned freight prepaid to Giant Industries which are deemed to be defective due to workmanship or failure of material. A Returned Goods Authorization (R.G.A.) number and completed warranty evaluation form is required prior to the return to Giant Industries of all products under warranty consideration.