Most systems tolerate pressure pulsation without any issues, such as pressure washers. PLUNGER PUMPS: always keep the "V" groove or the "Spring" side of the seals or packings towards the liquid or high pressure side. CAT Pumps Pressure Washer Pump - 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model Number 66DX40GG1. Over time, this can cause problems with the pump, making an unloader the preferable mechanism to have installed. An under sized line or collapsing line will starve the pump of liquid. If you find that there’s an excessive amount of dirt buildup where the old pump was, you can use a soft rug and rubbing alcohol to clean any components before the new installation. Both a primary and a secondary pressure relief valve are recommended in a high pressure system. Increasing the frequency of seal servicing will minimize the plunger [piston] rod wear. Inspect the incoming line for obstructions or any flow restrictions. Replacement valve kits are available and include the retainer, spring, valve, seat and necessary O-rings to complete the maintenance. Typical conditions that accelerate wear to the seals include: Make certain the seals are installed correctly. Cat Pump 4DX20E Replacement power washer pump first most electric motors with a 5/8" inch horizontal shaft and 56C frame. Standard Seal Kits include the Lo-Pressure Seals, Hi-Pressure Seals and necessary O-rings for standard maintenance. 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 5CP2120W Cat Pump … Review maintenance schedule. Sometimes pressure washers can break down due to improper operation and you will have to ask for help to the master for repair. Never adjust the pressure regulating valve to compensate for worn nozzles. Shop 13 CAT Pumps Pressure Washers products at Northern Tool + Equipment. (Inlet Pressure Stabilizer). Maximum inlet pressure for the piston pumps is 40PSI and plunger pumps is 60-70PSI. Low pressure is the first sign of worn high pressure seals. This CAT Pumps Pressure Washer Plunger Pump Repair Video shows the repair of the Fluid end of the CAT Pumps – Plunger Pumps from 3 – 68 and the 2SF and 4SF CAT Pumps. 99 $. Always make sure water is getting to the pump before starting the engine. Replace nozzle(s) with the proper size when pressure drops or on a regular maintenance schedule. They’re an ideal choice if you’re looking to replace or upgrade the pump unit on your pressure washer. Pressure is the resistance to flow. 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. Drain plugs could work loose due to system vibration, resulting in an oil leak. Determine the cause and correct. 5CP2120W 5CP2140WCS 5CP2150W 5CP3120 5CP3125 5CP5120 5CP5125 5CP6120 5CP6221 5CP6241CS 5CP6251. If crankcase oil has been severely contaminated, the bearings will be affected. More Buying Choices $554.97 (4 new offers) The ROP Shop 3600 PSI Power Pressure Washer Water Pump, 2.5 GPM for Dewalt DH3028, DXPW3025. Click here to learn more about repairing your pump. Plungers are sold separately. Add proper inlet filter to remove abrasives down to an acceptable level. See below document for proper nozzle selection. Sleeves are included in the Sleeve and Seal Kits. 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. Clean or replace as required. This can be caused by a restriction of the fluid flowing in to the pump, or an air leak on the inlet lines of the pump system. If the system is in prolonged by-pass or more than 50% of the total capacity is being by-passed, consider installing dual pumps with the second pump coming on with increased demand. Review entire inlet section for any potential sources of restriction or air leaks: We also have our Cavitation Whiteboard Sessions videos explaining the causes, and effects of cavitation below: Loud sucking noises typically indicate the pump is under stressful inlet supply. Each tip is approved by our Editors and created by expert writers so great we call them Gurus. Loud knocking noises are most commonly an indication of poor inlet conditions resulting in cavitation. If the situation gets too severe, the valves will also show pitting. When using longer inlet feed lines, a booster pump and a C.A.T. If you cannot find what you are looking for, contact our technical support team at techsupport@catpumps.com. 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. Pumps have a maximum operating temperature to protect seals and O-rings from heat damage. Typically crankshaft oil seals should be replaced with a bearing replacement or if the oil becomes contaminated. Initially pressure may drop, but ultimately serious damage will result due to lack of liquid to the pump. An inlet filter removes contamination, preventing it from entering the pump. Inspect the belt-drive assembly and belts. 2.7 GPM. 4.7 out of 5 stars 35. The special "K" Block-Style pumps have a special manifold that permits high inlet pressures equivalent to the discharge pressures. Professionals rely on Cat Pumps for their power washing equipment. Adequate water supply is essential for the operation of the pump. Add accessories such as a thermal valve or throttle controller to protect pump while it is in by-pass mode. Debris in either of these valves can allow the water to free flow in and out of that valve chamber and not be properly discharged from the pump. Periodically inspect your crankcase oil and crankshaft oil seals. This pump is made with concentric solid ceramic plungers which means they will remain cooler and last much longer. 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. If the check valve is stuck, or worn, it may not seat properly and the unloader will not shift in to the unloaded position. Inspect drain plug for damage. Don’t see your pump give us a call 1-877-824-7763 Model Data Sheets Service Manuals Model Data Sheets Service Manuals K- Series Pumps 1010 … The regulating/relief valve may become clogged from debris in the pumped liquid. Cat Pump 66DX40G1I More interestingly, the unit has a built-in safety filter system that will get rid of the elements in the water. To avoid starving the pump: When using a supply tank you should also: Check the line size to the pump inlet. Cat Pumps Pressure Washer Pump — 2000 PSI, 1.5 GPM, Direct Drive, Electric, Model# 4DX15EUIF Only $ 349. All Cat Pumps oil caps are vented to atmosphere. Flexible hose should be installed the last 3-6 feet before the pump inlet. Belt slippage causes the pump to run at a slower speed, which affects pump output flow. Close. Increase the frequency of your seal servicing. Hand torque to specifications in torque chart. Request a Free Catalog ... Cat Pumps Pressure Washer Pump — 1500 PSI, 2.0 GPM, Direct Drive, Electric, Model# 2SFX20 Only $ 479. . Their triplex plunger design provides smooth flow for liquids at 2 to 2.7 gallons per minute. Close. Our special formulated premium grade, petroleum-based, ISO 68 hydraulic oil contains an advanced additive package to protect against wear, oxidation, rust and corrosion. Ensure oil level is correct before using. When selecting pressure washer pump parts, Cat Pumps are a name you can rely upon for durability and longevity, essential qualities for car wash businesses. NOTE: the C.A.T. 3400 RPM. An open supply tank can pick up debris, so we recommend only installing a cover, Check and clean filters on the same schedule as replacing your seals, Your filter cleaning schedule may need to be more frequent, if the liquid being pumped is recycled or dirty, If pumping extremely dirty liquid, dual filters or larger filters may be necessary, When using a holding tank, do not feed the pump from the bottom of the tank, Ensure all valves are open in the supply line before starting your pump, Check the total demands from the main supply line to assure there is adequate liquid supply when all systems are operating, Check for line restrictions and minimize elbows and fittings, Make certain the inlet line is at least the size of the pump inlet port, preferably one size larger. The seal retainer pushes against the backside of the low pressure seal, keeping it perpendicular to the plunger/piston rod. Review the viscosity of the liquid. Clean or replace as necessary. Continued use with worn seals can result in erosion of the pump manifold. Inspect, and clean or replace the inlet check valve. If you are looking for a new pressure washing machine, be sure to get one with a CAT pump! Keep connecting fittings like elbows and tees to a minimum. A common fault is that your Troy Bilt will experience no pressure or low water pressure when you start … Wash-out is the erosion (i.e., pitting, scoring) of the manifold typically around sealing surfaces (i.e., low and high pressure seals, valve seat, and seal case) caused by local water quality (i.e., high pH, hard water, sea water), chemicals being supplied through the pump, or lack of timely maintenance to the seals. The pressure gauge is the pulse of your system. Lower inlet pressure with an inlet regulator. A properly baffled supply tank will eliminate air from the inlet line. 2 Check that there is a sufficient supply of water to the washer to enable the machine to reach high pressure. Clean and service the valve with repair kit on the same schedule as your pump seals. Inspect and replace seals. The orifice size of the nozzle determines the resistance to flow and therefore the pressure created. Pressure Washer Pump Repair Parts & Kits; Pressure Washing Accessories; Pressure Washer Hose Reels; More Categories: Pressure Washer Replacement Pumps; ... 007860 – Cat Pump Modular Unloader Valve Built-in ByPass Chemical Injector 66DX $ 129.95 $ 129.95 Add to cart. 99 $. The amount of oil required is specified on the pump Data Sheet. Pressure Washers with a CAT Pump. Inspect seals also as these may have been damaged by the irregular surface of a cracked plunger. It will tell you if something is not functioning correctly in your system. Whether you use the pressure washer intermittently around the house or run your system 40 hours per week, a quality pump is vital to a pressure washer. Water with abrasive is very hard on seals and causes the seals to wear quickly. Belts are wear items and should be periodically replaced. The drive-end crankcase operates in an oil bath (not under pressure) to supply splash lubrication to the drive end components. Slightly turn filler cap to stop oil from exiting through the oil filler cap vent port. Their pumps are used across many industries from breweries, cement plants and oil fields to pulp and paper and pressure washers. Pump types made by CAT: All types. Replacement of the manifold and seals is recommended if wash-out conditions are evident. As the nozzle wears the orifice size increases, which produces less resistance. Select a category from the drop-down menu below for help with troubleshooting your pump and system symptoms like low pressure, pulsation, unloader troubles, oil issues, water leaks, or seal problems. A good rule-of-thumb is to match the inlet port size of the pump; do not reduce the filter port size. This scored surface will cause wear to the crankcase oil seal and some external leaking. Follow service and preventive maintenance recommendations. Forward rotation is recommended, however, when reverse rotation is necessary, fill the crankcase to midway between the red dot and the top of bubble gauge to assure optimum lubrication is maintained. Check for excessive temperature and install Thermo Valve in by-pass line or increase supply tank size to allow for cooling. Pump inlet and discharge valves control the flow in and through the pump. This situation causes irregular flow patterns through the valve chambers, resulting in the pump “running rough.”. Operation in excessively humid conditions or with direct spray onto the pump may also affect the crankcase oil. Reset primary valve and secondary relief valve to system pressure. If a pump has good pressure when the trigger is squeezed, but the engine starts to bog down, or stall when the trigger is released, inspect the check valve inside of the unloader discharge port. A cracked plunger can allow for internal water leakage. Proper lubrication is critical to assure long pump life. Ensure you are using the correct belt type, length and number of belts to assure adequate horsepower. Free Shipping. This will result in downstream pulsation. If they have become scored or pitted, the seals or cups will wear quickly and could cause leaking. The supply tank should contain at least two baffles to help expel air bubbles. Debris and contamination build-up on valve seat surfaces can disrupt the normal flow through the inlet and discharge valves. Operating with a scored plunger rod can cause wear to the crankcase oil seal and ultimately a mixing of oil/water. Entrapped air creates bubbles that may implode under pressure, causing caviatation and often loud pump “grinding” noises. If there is corrosion or debris inside this check valve, the pump may experience turbulent inlet conditions. Pump: 4PPX30GSI. A pump generates flow, not pressure. In this condition, a damaged plunger could allow water or the fluid pumped to seep and even pass-through seals, resulting in a leak. My pressure washer troubleshooting experience told me it was air in the pump causing the problem. Cracked or crazed plungers can be caused by thermal shock or pressure spikes. Scored Cylinders generally occur when the cups wear and the pump continues to operate. Replace if damaged. Enlarge supply tank to accommodate high by-pass and allow liquid to cool before returning to the pump. Clean, or replace parts as necessary. Oil level should never fall below the red dot of the sight gauge. Reduce oil level to proper volume. Some liquids change in nature by heat, velocity as it moves through the pump, exposure to atmosphere or blending with other liquids. Examine the plunger carefully when installing seals and replace as needed. Use flexible hose if possible and use short-run plumbing to prevent restricted pump inlet flow. The 2DX, 3DX, 2F CAT pressure washer pumps features power options that range from 2 to 6.5 HP while handling pressure ratings of 2000 and 2500 psi. It also features specially designed seals to extend life. A cracked plunger can degrade pump performance, possible affecting flow and pressure. Remember to factor in approximately 5-10% by-pass flow in your nozzle size calculation. The unit is widely compatible as it fits 7/8-inches shaft crank pressure washer, brands, and more. Inspect and replace worn seals and o-rings. 1-888-279-9274 . Inspect the incoming line for obstructions; increase line size if possible; increase supply line pressure. Consult the pump datasheets for the proper volume of oil for a specific pump model. Replace seals and do not run in by-pass mode for longer than 3 to 5 minutes. See the attached chart for more information. If the small O-rings on the piston rod are worn, they can permit liquid to travel along the plunger rod and result in a scored rod. This plug must be removed to allow the crankcase to be vented to atmosphere. It will give a low pressure or fluctuating pressure reading on the gauge and result in damage to the pump. Check liquid supply for contamination. The piston begins to wear onto the cylinder surface. Make certain liquid temperature is within pump range. Cat pumps are made from high-quality, durable materials. Manifold erosion is typically referred to as "Wash-out". The crankcase oil seals should be inspected each time the Lo-Pressure and Hi-Pressure seals are serviced. Check for damage to the fitting attaching the hose to the system and secure connections with PTFE liquid or tape. Solution. After holding the trigger to keep the water running through the machine we managed to clear the air from the pump and lines. A pulsation dampener is commonly referred to as an “accumulator. If the unloader stem and piston are dirty or worn, the unloader may become stuck in the open position. Pressure Washer Troubleshooting. Home Pressure Washer Center Troubleshooting Running Rough. Exceeding the rated pump inlet pressure can result in premature wear of the low pressure seals, resulting in external leaks. The normal oil volume fills approximately one-half of the pump crankcase. Exercise caution when assembling. CAT Pump Part Number 811528 (Old PWP # APU-7443) $55.00 ea. PISTON PUMPS: always keep the NBR or FPM Cups side of the piston assembly towards the liquid or high pressure side. 3CP Plunger Pumps 3CP1120 3CP1125 3CP1130 3CP1140. A clogged inlet filter can be a serious issue for your system. Belt-drives are used to set and control the pump speed, measured in “revolutions-per-minute” or “rpm". Running the pump dry will cause an excessive amount of heat between plungers and the seals, causing them to fail in a short amount of time. 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. A pulsation dampener reduces fluctuations in system pressure due to the reciprocating action of the pump plungers or pistons. Clean per instructions. Maintain proper system filtration. If your supply line pressure exceeds the pump inlet rating, install a pressure reducing valve at the pump inlet. Flush the pump with a 50% antifreeze/ 50% water solution before storing. Comet High-Pressure Pump Oil — 32 Oz., Model# 8102,1801.00 Only $ 11. Inspect and replace high-pressure seals as a complete set. Inspect filter and filter screen or mesh. Verify supply line pressure and increase if indicated. Prolonged operation with worn seals can allow the fluid being pumped to rush around the outside of the seal. A cracked plunger can allow for an external water leak. Many systems will have a check valve on the inlet supply line feeding the pump. With a regular maintenance schedule, plunger [piston] rod wear is not a regular maintenance concern. All of these conditions will severely and prematurely wear the seals. These reliable pumping units have little down time and less troubleshooting needs.