REPAIR INSTRUCTIONS - P46W, P46W-HK, & P46HT

Gear End Disassembly

14.Remove the crankcase cover bolts (9). Inspect the crancase cover O-ring (4) for wear. Replace if necessary.

15.Inspect the dip stick (5) vent hole for signs of clogging. Clean if necessary.

16.To remove the crankshaft (18), first remove the bearing cover plates (12) Remove the key (19).

17.Hold the pump rear assembly with a wooden fixture, or other suitable device, in order to secure it while removing the crankshaft (18). Using a plastic mallet, tap the crankshaft (18) from one side while turning it from the other side. The turning insures that during this sequence the crankshaft does not become wedged agaisnt the connecting rods (20). The far side bearing (15) will remain in the crancase (1). When free, the crankshaft (18) can be removed by hand.

18.The crankshaft bearing (15) remains on the crankshaft (18) as it is removed. The near side crankshaft seal (14) will be removed by this procedure.

19.If necessary, use a bearing puller to remove crankshaft bearing (15).

20.Remove the connecting rod (20) and plunger rod/crosshead assembly (22) from the rear of the pump by pulling straight out of the crosshead guides.

21.To remove the crankcase oil seal (26), tap oil seal out from the rear of the crankcase using a dowel and rubber mallet. The area onto which the oil seal rests should be clean and dry. Put a small drop of loc-tite on the oil seals and place into crankcase with clips facing the rear of the pump.

22.To remove the crosshead pin (23) from the crosshead (22), the assembly should be positioned on a wooden fixture to avoid damage to crosshead. Drive out pin (23) on opposite side of mark on the crosshead. On those pumps without mark on crosshead, drive out pin by tapping on tappered side of pin.

23.To remove the bearing remaining in the crankcase, insert small end of Giant Bearing tool and tap with a rubber mallet untill bearing and seal are completely removed. The bearing can only be removed from the inside by inserting the Giant Bearing Tool through the opposite side of the crankcase (1) and should be inspected for possible damage.

Gear End Reassembly

24.To reassemble, place the far bearing in the crankcase bearing housing and with the Giant Bearing tool as a driver, tap into the crankcase (1) using a rubber mallet.

25.Insert the far side crankshaft oil seal (14) with the Giant Bearing Tool making sure it is firmly seated and well oiled. Always make sure that the crankshaft seal (14) lip does not show signs of wear. Replace the bearing cover (12) and tighten securely.

26.Replace the connecting rod (20) and plunger rod/crosshead assembly (22) by press-fitting the crosshead pin (23). Make sure to insert the beveled edge of the crosshead pin into crosshead. If the crosshead has a mark, install pin frommarked side. The crosshead pin (23) should not extend beyond either side of the crosshead in order to prevent damage to the crosshead bore of the crankcase.

27.Place each crosshead/plunger assembly (22) into the pump making sure that all of the parts are well oiled before insertion into the crankcase.

28.Replace near side bearing on crankshaft (18) and mallet to tap into place.

29.Take the crankshaft (18) end with the bearing and insert the other end through the bearing housing carefully threading the lobes of the crankshaft through the well lubricated connecting rods (20). Turning the crankshaft while tapping it through the connecting rods will help prevent binding and possiable damage to the connecting rods. Continue tapping the crankshaft through the connecting rods (20) until it is firmly seated into far side bearing.

30.Insert the near side crankshaft oil seal (14), making sure it is firmly seated and well oiled. Replace the bearing cover (12) and tighten securely.

31.See instructions (13 above) for re-installing fluid end onto gear end.

32.Clean the back edge of crankcase and replace the crankcase cover. Be careful not to pinch the crankcase cover o-ring.

33.Fill the P46W crankcase with 8 oz. of Giant oil. and check the oil level with the dipstick. Proper level is center of two lines Reinstall the pump into your system.

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Giant Triplex Ceramic Plunger Pump installation instructions Gear End Disassembly
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Triplex Ceramic Plunger Pump specifications

The Giant Triplex Ceramic Plunger Pump is a cutting-edge solution designed to meet the demanding needs of high-pressure applications in various industries. Known for its durability and efficiency, this pump provides reliable service in tasks such as pressure washing, industrial cleaning, and other high-flow, high-pressure operations.

One of the standout features of the Giant Triplex Ceramic Plunger Pump is its triplex design. Unlike traditional single-piston pumps, the triplex configuration uses three plungers that work in a staggered sequence. This results in smoother operation, reduced pulsation, and improved overall performance. The synchronized action of the plungers ensures that fluid delivery is constant and consistent, which is crucial for applications requiring high pressure.

The pump is equipped with ceramic plungers, which are engineered to withstand abrasive materials and harsh chemicals. These ceramic components offer exceptional resistance to wear and tear, extending the lifespan of the pump and reducing maintenance costs. This durability is especially beneficial in industrial settings where the pump may encounter contaminants or abrasive substances.

Another technological advancement found in the Giant Triplex Ceramic Plunger Pump is its built-in unloader valve. This crucial component protects the pump from excessive pressure buildup, allowing for safe and efficient operation. In situations where the pressure exceeds pre-set limits, the unloader valve automatically diverts or bypasses the flow, preventing potential damage to the pump and other connected equipment.

Additionally, the Giant Triplex pump features a brass head construction that enhances its strength and robustness. This design also allows for better heat dissipation, ensuring that the pump operates efficiently even under high-pressure conditions. The incorporation of high-quality seals and O-rings enhances the pump's reliability by preventing leaks and ensuring optimal performance over time.

Overall, the Giant Triplex Ceramic Plunger Pump is renowned for its high efficiency, longevity, and robustness. These characteristics make it an ideal choice for various high-pressure applications across industries. Its advanced technologies, including the triplex design, ceramic plungers, built-in unloader valve, and robust construction, provide users with a reliable and effective pumping solution that meets the challenges of modern industrial demands. Whether for pressure washing, cleaning, or other demanding applications, this pump stands out as an essential tool for professionals seeking performance and durability.
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