Page 1
Triplex Ceramic Model Plunger Pump Operating Instructions / Manual GP5128GB Series GP5128 with External Gearbox and Pinion Drive GP5128-180 Shown Contents: Installation Instructions: page 2 Pump Specifications: page 3 Exploded View: page 4 Parts List: page 5 Kits/Torque Specs: page 5...
Page 2
(5.4 liters) of Industrial Gear Lube Oil and water temperature must be kept under (Giant p/n 01154) or ISO VG 220 (e.g. Aral control. Degol BG220) or SAE 90 gear oil. Initial change after 50 operating hours and then Cavitation and/or compression of gases every 500 operating hours.
Page 3
Specifications Model GP5128GB Series U.S......(Metric) Volume............20.6 GPM ....78.0 LPM Discharge Pressure ........4060 PSI ....280 bar Power Required ..........56.0 BHP ....41.8 kW Speed (Continuous)..............1000 RPM Inlet Pressure (maximum) ......-4.35 to145 PSI ..-0.3 to 10 bar Plunger Diameter..........1.1”...
Page 4
GP5128GB Series Exploded View GP5128-180 Shown...
Page 5
GP5128GB Series Spare Parts List ITEM PART DESCRIPTION QTY. ITEM PART DESCRIPTION QTY. 03248 Crankcase 04288-NPT Valve Casing 13000 Oil Filler Plug Assembly 07150 O-Ring 05943 Oil Sight Glass Assembly 07109 Plug, 1/2” BSP 13267 Crankcase Cover 06272 Copper Seal Ring, 1/2”...
Page 6
GP5128GB Series Repair Instructions To Check Valves Remove inner hexagon screw (48A) and remove plugs (48) with a screwdriver. Check O-rings on plugs (48B). Pull out tension spring (48C). Using a clipring pliers or a ø22 extractor tool, remove valve assembly (46) out of the valve casing (43).
Page 8
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. Call (419)-531-4600 or fax (419)-531-6836 to obtain an R.G.A.
Need help?
Do you have a question about the GP5128GB Series and is the answer not in the manual?
Questions and answers