This scored surface will cause wear to the crankcase oil seal and some external leaking. Check to see if the regulator and relief valve performance range covers your system performance. The regulating/relief valve may become clogged from debris in the pumped liquid. Cavitation can wear internal pump components, resulting in possible pump failure. Replace the plungers and install a new seal kit. These reliable pumping units have little down time and less troubleshooting needs. 0 Items. Maximum inlet pressure for the piston pumps is 40PSI and plunger pumps is 60-70PSI. Verify supply line pressure and increase if indicated. Doing maintenance at the early signs of low pressure readings will assure the seals and packings are replaced before they start leaking and eliminate possible damage to other parts of the pump. The unit is widely compatible as it fits 7/8-inches shaft crank pressure washer, brands, and more. In some cases, installing a pressure gauge is recommended to monitor inlet pressure. Inspect the incoming line for obstructions; increase line size if possible; increase supply line pressure. Continued use with worn seals can result in erosion of the pump manifold. Top Selling CAT Pumps. 99 $. To avoid starving the pump: When using a supply tank you should also: Check the line size to the pump inlet. Close. Initially pressure may drop, but ultimately serious damage will result due to lack of liquid to the pump. The drive-end crankcase operates in an oil bath (not under pressure) to supply splash lubrication to the drive end components. Turbulent water entering the pump can cause the pump to run very rough. Take the unloader apart and inspect the piston valve assembly. An adequate and smooth (non-turbulent) water supply to the pump is essential for best performance. Cat Pump 66DX40G1I Drain the oil and inspect the drive end for signs of premature damage, or wear. Most systems tolerate pressure pulsation without any issues, such as pressure washers. Fill the oil to the correct level and run the pump again to see if this resolves the issue. If you are looking for a new pressure washing machine, be sure to get one with a CAT pump! This will result in downstream pulsation. Item# 22158 Quick Info. Severely restricting water supply can cause cavitation and lead to catastrophic pump failure, resulting in system shutdown and the need for a complete pump re-build or total replacement. Pump: 4PPX30GSI. Pump drive-ends are equipped with either a drain cap or a drain plug. See all Stores; Parts, Service + Repair; Catalog. Cat pumps are made from high-quality, durable materials. Replace pressure gauge. Operating the pump with excessive wear to the Lo-Pressure and Hi-Pressure seals, will allow the Male Adapter to come in contact with the ceramic plunger and score it. Maintain proper system filtration. The primary function of the seals and o-rings in the pump is to maintain separation between two environments, such as the internal area of the pump housing and the exterior of the pump. If the check valve  is stuck, or worn, it may not seat properly and the unloader will not shift in to the unloaded position. An inadequate water supply will result in a lower flow being discharged from the pump and therefore lower system pressure. Review maintenance schedule. Always make sure water is getting to the pump before starting the engine. Water is also required to fill the pump chambers. If your Cat Pump is exposed to moist conditions or frequent direct spraying, a ventilated enclosure is highly recommended. 3/4" Hollow-Shafted Pump. 7314Powerchem #4 14177O-Ring 14179O-Ring 17547O-Ring 17615O-Ring 17617O-Ring 21985Backup Ring 21986Backup Ring 23172O-Ring 25301Seal27339Oil Seal29257Oil Seal30023Cup Kit30047Key, 5 mm (3CP)30057Key, 6 … Carefully examine the interior wall of the cylinder each time the cups are replaced. 3400 RPM. Inspect the supply tank. 3000 PSI. The pump supply line from the tank should be plumbed from the opposite side of the tank than the by-pass return and tank fill line. Prolonged operation with worn Lo-Pressure and Hi-Pressure seals [Plunger Pumps] OR cups and piston rod o-rings [Piston Pumps]can result in liquid traveling back along the plunger[piston] rod and resulting in scoring of the rod. With a regular maintenance schedule and oil changes, the crankshaft oil seals will not require regular maintenance. If this occurs at start up, the belts require adjustment. 2.7 GPM. Use PTFE liquid or tape on all connections. Cat power washer pumps deliver powerful, efficient water flow to make cleaning tasks faster and easier. Conditions that cause turbulent flow include plumbing restrictions such as pipe-reducers and elbows and any source of atmospheric air such as a leak in an inlet hose or a loose connection. This eventually will attack the crankcase oil seal and permit oil/water mix and contamination of the crankcase oil. Clean inlet filters regularly. They’re an ideal choice if you’re looking to replace or upgrade the pump unit on your pressure washer. Check for damage to the fitting attaching the hose to the system and secure connections with PTFE liquid or tape. Check the pH of the liquid to be certain it falls within the 5 to 9 range. A clogged or improperly sized filter reduces the amount of liquid to the pump inlet, which can cause cavitation and even severe pump damage. Click here to learn more about repairing your pump. to stabilize the inlet pressure. No reading indicates the gauges is probably damaged and needs to be replaced. If the system spec is out of the valve range, it will not function properly. A pump generates flow, not pressure. Enlarge supply tank to accommodate high by-pass and allow liquid to cool before returning to the pump. Use flexible hose if possible and use short-run plumbing to prevent restricted pump inlet flow. Debris and contamination build-up on valve seat surfaces can disrupt the normal flow through the inlet and discharge valves. We only recommend the use of Cat Pumps brand oil in any Cat Pump. Chat. Typical conditions that accelerate wear to the seals include: Make certain the seals are installed correctly. Remove each valve or valve stack and inspect. Inspect and replace seals. Always note the order and direction of parts when removing them from the pump to assist in installing the new items. Clean or replace as required. Your Cat Pump pressure washer isn’t working or isn’t even turning on? Request a Free Catalog ... Cat Pumps Pressure Washer Pump — 1500 PSI, 2.0 GPM, Direct Drive, Electric, Model# 2SFX20 Only $ 479. Review the center distance and belt length and adjust the belt tension. Release any pressure in the pump by squeezing the trigger on the washer’s spray wand. 5CP Plunger Pumps . Over the course of operation, seal wear occurs due to the reciprocating movement of the plunger. Review the belt selection to make certain adequate horsepower is being delivered. Lower inlet pressure with an inlet regulator. Supply tank should contain at least two baffles. Our special formulated premium grade, petroleum-based, ISO 68 hydraulic oil contains an advanced additive package to protect against wear, oxidation, rust and corrosion. Comet Comet is the U.S. distributor of another Italian pump manufacturer, Comet SpA. Some liquids change in nature by heat, velocity as it moves through the pump, exposure to atmosphere or blending with other liquids. Starvation is typically caused by restricted inlet lines, excessive demands on supply line, kinked hoses, excessively dirty inlet filters, low or empty supply tank, excessively long feed lines or air bubbles in the liquid. Make Offer - NEW Cat Pumps Baldor 8042 208-230/460 3ph 5hp 1750rpm Pressure Washer Pump Motor CAT PUMPS 3CP1221 TRIPLEX PLUNGER PUMP 4.2 GPM 2000 PSI STAINLESS STEEL NEW C $1,647.39 Sometimes the valve sticks open, resulting in a sudden, and possible intermittent loss of pressure. If crankcase oil has been severely contaminated, the bearings will be affected. A pulsation dampener is commonly referred to as an “accumulator. Built-in Pressure Unloader protects the pump by controlling pressure. Inspect and replace high-pressure seals as a complete set. CHANGE OIL IMMEDIATELY IF CONTAMINATED. 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