Inspect the belt-drive assembly and belts. After holding the trigger to keep the water running through the machine we managed to clear the air from the pump and lines. Click on your pump model for information Need help ? This will result in over-pressurization and possible damage to the pump. Close. 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. An under sized line or collapsing line will starve the pump of 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 Free Shipping. Professionals rely on Cat Pumps for their power washing equipment. Increase the frequency of servicing. Review the pumped liquid for abrasives and install proper filtration. 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. Skip to content. Replace seals and do not run in by-pass mode for longer than 3 to 5 minutes. Prolonged operation with worn Lo-Pressure and Hi-Pressure seals will permit liquid to travel back along the plunger [piston] rods towards the crankcase oil seals. Operating with contaminated oil can cause damage bearings, oil seals and other drive-end components. This is a direct-drive triplex [three plunger rods] plunger pump, constructed of a brass manifold, 304SS valve assemblies, solid ceramic plungers and standard NBR [Buna-N] seals and o-rings. Overfilling the crankcase can result in oil spilling or spurting through the vented filler cap or building internal pressure. If a booster pump is required to supply adequate inlet pressure, install a C.A.T. 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 … Install a pulsation dampener on the discharge manifold. A horizontal internal piston shifts based on downstream pressure to allow flow to either travel to the wand or back to the source through the by-pass port. If this is not possible, replace seal with high temperature seals that are available as pump options. Cracked or crazed plungers can be caused by thermal shock or pressure spikes. Some liquids require a pressurized inlet and a C.A.T. Cat Pump 4DX20E Replacement power washer pump first most electric motors with a 5/8" inch horizontal shaft and 56C frame. Follow service and preventive maintenance recommendations. If it is filled past this, drain some of the oil from the drain plug on the bottom, back of the blue crankcase. Adequate water supply is essential for the operation of the pump. Replace the plungers and install a new seal kit. Starving the pump of sufficient liquid to the pump inlet is one of many causes of low pressure. Both cups and seals should be replaced at the first signs of low pressure. to stabilize the inlet pressure. An inadequate water supply will result in a lower flow being discharged from the pump and therefore lower system pressure. Follow service and preventive maintenance recommendations. Sleeves are included in the Sleeve and Seal Kits. Those who depend on pressure washers to get the job done rely heavily on Cat Pumps. If crankcase oil has been severely contaminated, the bearings will be affected. This eventually will attack the crankcase oil seal and permit oil/water mix and contamination of the crankcase oil. Low Pressure Water Leak Oil Leak Pulsation Running Rough Knocking Noise Premature Seal Failure. With a regular maintenance schedule and oil changes, the crankshaft oil seals will not require regular maintenance. CALL 1-877-824-7763 for all your CAT PUMP Needs. High temperature will cause seals to wear at an accelerated rate. Cat Pumps Repair Kits & Parts Request Additional Information Models Part# Description 71771/2" Thermo-190° 7232Chem. 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. It will tell you if something is not functioning correctly in your system. It requires … Flexible hose should be installed the last 3-6 feet before the pump inlet. Belt-drives are used to set and control the pump speed, measured in “revolutions-per-minute” or “rpm". Please refer to the attached chart for proper maintenance schedule information. Any roughness or grooves will prematurely wear the cups or seals. Inlet supply line should be at minimum equal to the pump inlet ports and preferably one size larger, Check the demands on the supply line in your facility to assure there is enough supply when all demands are on, Review the size of your supply tank and be certain it contains at least two baffles and the feed line from the tank is opposite the fill line, Install the line out to the pump near the bottom for best flow, Minimize the number of elbows and tees in the inlet line as each is a restriction on the flow to the pump. See the attached chart for more information. Clean or replace as required. The tighter the seals “squeeze” the plungers, the faster the seals will wear. Add proper inlet filter to remove abrasives down to an acceptable level. Make certain the line size is at least the size of the pump inlet [preferably one size larger] and elbows are kept to a minimum. A clogged or improperly sized filter reduces the amount of liquid to the pump inlet, which can cause cavitation and even severe pump damage. A clogged inlet filter can be a serious issue for your system. To avoid starving the pump: When using a supply tank you should also: Check the line size to the pump inlet. Check supply tank for proper size and excessive air bubbles. If there are any signs of milky, foamy, or white oil, stop using the pump and evaluate for cause of contamination. Inj. As the nozzle wears the orifice size increases, which produces less resistance. Select Issue: What's New: ... Our Cat Pumps Service & Repair Centre offers a wealth of information about your Cat pump & pump system. Reduce inlet water temperature. Replace if damaged. Seal kits are available and part number can be found on your pump datasheet. Inspect and replace seals. With a regular maintenance schedule, plunger [piston] rod wear is not a regular maintenance concern. Reset primary valve and secondary relief valve to system pressure. Inspect and tighten if necessary. Replace the Cylinders or sleeves as needed. Proper lubrication is critical to assure long pump life. Verify supply line pressure and increase if indicated. The crankcase oil seals should be inspected each time the Lo-Pressure and Hi-Pressure seals are serviced. The drive-end crankcase operates in an oil bath (not under pressure) to supply splash lubrication to the drive end components. A pump uses the incoming water to lubricate and cool its internal components and requires an adequate supply of water to fill the chambers. Replace nozzle(s) with the proper size when pressure drops or on a regular maintenance schedule. Many systems will have a check valve on the inlet supply line feeding  the pump. If crankcase oil becomes contaminated, it is recommended to replace the o-rings on the drain plug and oil gauge. Exercise caution when assembling. Always verify system pressure before attempting system maintenance or repairs. These O-rings are included in the seal kits and valve kits. Replace nozzle with a properly sized nozzle. An inadequate water supply will result in a lower flow being discharged from the pump and can create a loud knocking noise. Click here to learn more about repairing your pump. Pump types made by CAT: All types. On systems above 130 F, pressurize the inlet and install a C.A.T. 7C Plunger Pumps 7CP6110 7CP6170. Over the course of operation, seal wear occurs due to the reciprocating movement of the plunger. See below document for proper nozzle selection. The special "K" Block-Style pumps have a special manifold that permits high inlet pressures equivalent to the discharge pressures. Increase line size if necessary. Inspect all connections at regular service intervals. Release any pressure in the pump by squeezing the trigger on the washer’s spray wand. Seals are wear items and require periodic replacement. If the check valve  is stuck, or worn, it may not seat properly and the unloader will not shift in to the unloaded position. Ensure oil level is correct before using. This water can be pulled in to the drive end on the plunger/piston rod return stroke. No reading indicates the gauges is probably damaged and needs to be replaced. Manifold erosion is typically referred to as "Wash-out". Lower inlet pressure with an inlet regulator. PISTON PUMPS: always keep the NBR or FPM Cups side of the piston assembly towards the liquid or high pressure side. 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. 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. Review maintenance schedule. A special oil cap protector is available for most Cat Pumps models for added protection in normal cleaning conditions. We only recommend the use of Cat Pumps brand oil in any Cat Pump. Hand torque to specifications in torque chart. Worn valves can allow water to free flow in and out of a valve chamber and not be properly discharged from the pump. Oil seals can wear over time and allow oil to leak. Your Cat Pump pressure washer isn’t working or isn’t even turning on? Cart; CAT Pumps. Inspect and service the seals as soon as possible. 3000 PSI. Inspect seals also as these may have been damaged by the irregular surface of a cracked plunger. This situation causes irregular flow patterns through the valve chambers, resulting in the pump “running rough.”. Check liquid supply for contamination. Inspect and replace worn seals and o-rings. CAT Pump Part Number 811528 (Old PWP # APU-7443) $55.00 ea. OR ORDER ONLINE – CLICK THE Link CAT PUMPS Below are the Data Sheets (DA) and Service Manuals (SM) for all active CAT PUMPS. When one high-pressure seal wears sooner that the other two an uneven flow results that can cause the pump to run very rough. Close. Solution. Check the Pressure-Pro Fully Plumbed CAT 3300 PSI 2.5 GPM Triplex Pressure Washer Pump w/ Plumbing Kit ratings before checking out. Clean or replace as necessary. Our special formulated premium grade, petroleum-based, ISO 68 hydraulic oil contains an advanced additive package to protect against wear, oxidation, rust and corrosion. This condition is typically a result of liquids that easily set-up, are high viscosity or contain suspended solids. Cat Pumps Pressure Washer Pump — 2000 PSI, 1.5 GPM, Direct Drive, Electric, Model# 4DX15EUIF Only $ 349. Oil level should never fall below the red dot of the sight gauge. $. Inspect, and clean or replace the inlet check valve. 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. 3CP Plunger Pumps 3CP1120 3CP1125 3CP1130 3CP1140. Inspect the incoming line for obstructions; increase line size if possible; increase supply line pressure. Operating with a scored plunger rod can cause wear to the crankcase oil seal and ultimately a mixing of oil/water. Take the unloader apart and inspect the piston valve assembly. Often, pressure-related problems are not due to the pump, but due to downstream components. If the situation gets too severe, the valves will also show pitting. Should system pulsation become pronounced, install a dampener. The amount of oil required is specified on the pump Data Sheet. FREE Shipping. Lubricate external o-rings to avoid cutting or pinching when installed into the manifold chambers. PWP P/N: CAT-31422. Replacement of the manifold and seals is recommended if wash-out conditions are evident. Pulsations can occur when there is a restriction in the inlet line or air is being drawin with the liquid. This Easy-Start valve bypasses pump flow back to the pump inlet during startup and closes once the pump is up to full speed. Troubleshooting Your Pressure Washer Tips. The regulating/relief valve may become clogged from debris in the pumped liquid. Their pumps are used across many industries from breweries, cement plants and oil fields to pulp and paper and pressure washers. Cat pumps are made from high-quality, durable materials. To minimize wash-out, flush the manifold with fresh water when the pump is not used and confirm the chemical compatibility of your pump manifold and seals to any chemicals you are currently supplying through the pump. Pressure is the resistance to flow. 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. Examine the o-rings on these adapters when servicing the seals or valves and replace as needed. Replace the high pressure hose when it becomes extremely worn or cracked. 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. It is preferable to use reinforced flexible hose at the pump inlet and eliminate excessive elbows. 5PFR Plunger Pumps …

I use them often when tearing down a pump to fix water pressure issues. Make certain liquid temperature is within pump range. Belt slippage causes the pump to run at a slower speed, which affects pump output flow. Cat power washer pumps deliver powerful, efficient water flow to make cleaning tasks faster and easier. 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. Each pump has a unique crankcase capacity. 2.7 GPM. Check all connections and use PTFE liquid or tape for airtight connections. Review the viscosity of the liquid. Internal erosion of the pump manifold can allow fluid to leak around the seals or valves. Carefully examine the interior wall of the cylinder each time the cups are replaced. A worn internal part in the valve such as a piston stem may have become lodged. Each pump drive end is equipped with an oil sight gauge to view the oil level. Sometimes the valve sticks open, resulting in a sudden, and possible intermittent loss of pressure. A cracked plunger can allow for an external water leak. We switched off the electric motor but kept the water running through the pump. Clean per instructions. Cylinders are less likely to become pitted or scored and are sold separately. Remember to factor in approximately 5-10% by-pass flow in your nozzle size calculation. 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. Inspect drain plug for damage. Clean and service the valve with repair kit on the same schedule as your pump seals. Examine the plunger carefully when installing seals and replace as needed. Never run a pump dry. Pumps Running the pump without washing or spraying water can put the pump into “by-pass mode.” When the pump is in by-pass mode and water is directed back to the pump inlet, excessive heat can quickly build. But you can try to repair the fault within a short period your own resources with the help of the troubleshooting. Both a primary and a secondary pressure relief valve are recommended in a high pressure system. Periodically inspect your crankcase oil and crankshaft oil seals. Operation with contaminated oil will cause damage to bearings, oil seals and other drive-end components. PLUNGER PUMPS: always keep the "V" groove or the "Spring" side of the seals or packings towards the liquid or high pressure side. Chat. Screeching noises are typically an indication that belts are slipping. Worn nozzle(s) are the most frequent cause of low pressure. Review the center distance and belt length and adjust the belt tension. 5CP Plunger Pumps . When the water cycles through the pump without water being sprayed, it continues to cycle and eventually overheats, which can melt some internal components of the machine; Chemical Injector Problem: No soap out of spray gun. Exceeding the rated pump inlet pressure can result in premature wear of the low pressure seals, resulting in external leaks. 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. The supply tank should contain at least two baffles to help expel air bubbles. Operating the pump with excessive wear to the seals and packings will result liquid traveling back along the plunger rod. In other situations the excessive pressure will be transferred to the drive-end of the pump. (Inlet Pressure Stabilizer). A faulty gauge reading can lead to misinterpreting system conditions and therefore taking inappropriate actions. Entrapped air creates bubbles that may implode under pressure, causing caviatation and often loud pump “grinding” noises. Conditions that can accelerate the wear to valves and seats include: Refer to your Pump Service Manual for proper installation procedures. If a pulsation dampener is in use and pulsation is an issue, inspect bladder for rupture, check the dampener’s charge pressure and recharge to factory settings or replace the unit entirely. A common fault is that your Troy Bilt will experience no pressure or low water pressure when you start … These reliable pumping units have little down time and less troubleshooting needs. Some liquids change in nature by heat, velocity as it moves through the pump, exposure to atmosphere or blending with other liquids. Description Cat 66DX 4.0 GPM at 4000 PSI Pressure Washer Pump – 66DX40G1I. An unloader is a pressure control valve that sets and maintains system pressure. The high-pressure seals in the pump keep water in the high-pressure chamber. Also, if the drive end has been contaminated by the pumped fluid leaking past worn or damaged seals in the pump manifold, the oil level can rise causing oil to leak from the vented red oil cap. Add accessories such as a thermal valve or throttle controller to protect pump while it is in by-pass mode. 3/4" Hollow-Shafted Pump. . Each tip is approved by our Editors and created by expert writers so great we call them Gurus. This will result in a sudden loss of pressure. Loud knocking noises are most commonly an indication of poor inlet conditions resulting in cavitation. Drain plugs could work loose due to system vibration, resulting in an oil leak. In extreme cases, seals may tear, resulting in seal failure. If the system spec is out of the valve range, it will not function properly. CAT Pumps Pressure Washer Pump - 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model Number 66DX40GG1. Always note the order and direction of parts when removing them from the pump to assist in installing the new items. Filling the crankcase to the RED DOT on the bubble gauge will assure that adequate lubrication is delivered to the crosshead area of the plunger rods. Examine the plunger carefully when installing seals and replace as needed. If the pressure is fluctuating, possible system issues could be: Evaluate these items and correct or replace to avoid more serious damage to the pump or system. Maximum inlet pressure for the piston pumps is 40PSI and plunger pumps is 60-70PSI. Inspect and replace cracked plunger(s). Refer to your Pump Service Manual for proper installation procedures. 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. Turbulent water entering the pump can cause the pump to run very rough. In some cases, installing a pressure gauge is recommended to monitor inlet pressure. Gauges can fail due to over-pressurization or pressure spikes. 5CP2120W Cat Pump … The normal oil volume fills approximately one-half of the pump crankcase. 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. Check to see if they are properly tightened. Harsh liquids or excessive heat may also be a cause. 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. Incorporate a more frequent service cycle. Request a Free Catalog ... Cat Pumps Pressure Washer Pump — 1500 PSI, 2.0 GPM, Direct Drive, Electric, Model# 2SFX20 Only $ 479. Fill the oil to the correct level and run the pump again to see if this resolves the issue. 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. Supply tank should contain at least two baffles. For more information, click the link below: Long discharge lines can create a water hammering effect when the pump is not properly isolated. Periodically replace belts for optimum performance. The unloader switches to the unloaded position and runs at low pressure until the trigger is squeezed again. A pulsation dampener is commonly referred to as an “accumulator. This situation causes irregular flow patterns through the valve chambers, resulting in flow ripple or pulsation. Cat Pump 66DX40G1I 1-888-279-9274 . Replacement valve kits are available and include the retainer, spring, valve, seat and necessary O-rings to complete the maintenance. With regular maintenance schedule and oil changes, your bearings should not require replacement for many years. Check the oil level in the pump sight glass. Top Selling CAT Pumps. NOTE: the C.A.T. Inspect filter and filter screen or mesh. Cat Pumps also offers manifolds made of a washout resistant material. Other issues could cause oil leaks, such as cross-threading the plug or not applying enough torque to create a tight seal. 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 proper tension. The fill line into the tank should be on the opposite side as the discharge line out to the pump. We believe in producing only the highest quality and longest-lasting pump available. Most systems tolerate pressure pulsation without any issues, such as pressure washers. Note: it is important to maintain an adequate amount of crankcase oil. Cavitation can wear internal pump components, resulting in possible pump failure. Pump inlet and discharge valves control the flow in and through the pump. If they have become scored or pitted, the seals or cups will wear quickly and could cause leaking. If your supply line pressure exceeds the pump inlet rating, install a pressure reducing valve at the pump inlet. Check pressure with new gauge and replace as needed. These items seldom need servicing. Using oil other than Cat Pumps brand oil may result in foaming, and frothing of the oil. Inspect the supply tank. Seats and valves are wear items and should be replaced periodically. All of these conditions will severely and prematurely wear the seals. Cat Pump 4DNX27GSI Replacement power washer pump first most 4 to 7hp engines with a 3/4" inch horizontal shaft. If installed backwards, seals will not hold pressure. Contact techsupport@catpumps.com with some pictures of your pump and attached accessories for assistance in identifying, and troubleshooting the Easy-Start valve. Review the belt selection to make certain adequate horsepower is being delivered. Read these 17 Troubleshooting Your Pressure Washer Tips tips to make your life smarter, better, faster and wiser. Enlarge supply tank to accommodate high by-pass and allow liquid to cool before returning to the pump.If pumping high temperature fluids, contact Cat Pumps for recommended seal configurations. Tighten or replace belts as required. Running the pump without water. If either of these situations occur, stop use immediately. 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. 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. Consult the pump datasheet. If the unloader stem and piston are dirty or worn, the unloader may become stuck in the open position. Built-in Pressure Unloader protects the pump by controlling pressure. should be considered, Properly seal all connections with PTFE tape or liquid for air tight connections, Confirm your liquid temperature is within the maximum limits of the pump, If temperature are above 130F, a pressurized inlet supply is required, If returning the by-pass to the pump inlet, install a Thermo Valve in the by-pass line to bleed off excessively hot liquids, Connect the supply line from supply tank to the pump at least 3-4" above bottom to avoid picking up any sediment. A cracked plunger can allow for internal water leakage. Clean inlet filters regularly. A worn seal or o-ring can allow water or the pumped fluid to leak internally or externally, which can be visible as a leak or a drip. Some liquids require a flush prior to any dormant cycles to prevent set-up or pump contamination. Consult you local supplier for belt replacement. Carefully examine the outer surface of the sleeves at the end of the piston rod each time the seals are replaced. Then drain the crankcase, clean the drive end, and fill with new Cat Pumps oil. The crankcase has three crankcase oil seals, one on each plunger rod and two crankshaft oil seals. Incoming water lubricates and cools the pump. Inspect the incoming line for obstructions or any flow restrictions. A pulsation dampener reduces fluctuations in system pressure due to the reciprocating action of the pump plungers or pistons. More interestingly, the unit has a built-in safety filter system that will get rid of the elements in the water. 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 … On many pumps there is a shipping plug installed on the top of the red cap to prevent oil from spilling during shipping. Scored Cylinders generally occur when the cups wear and the pump continues to operate. Starvation means you are not getting enough liquid into the pump inlet. Inspect and replace worn seals. If conditions are extreme, a properly vented enclosure is recommended. Pump drive-ends are equipped with either a drain cap or a drain plug. Comet Comet is the U.S. distributor of another Italian pump manufacturer, Comet SpA. Now it’s time to install the new pump into your existing pressure washer by using the same bolts and/or screws that were removed from the older pressure washer. Lower flow means resistance to the flow decreases, which translates into lower system pressure. An inlet filter removes contamination, preventing it from entering the pump. Standard Seal Kits include the Lo-Pressure Seals, Hi-Pressure Seals and necessary O-rings for standard maintenance. Inspect the incoming line for obstructions or any flow restrictions. CAT PUMPS operate best with liquids up to 500CPS or 2500SSU. This pump is made with concentric solid ceramic plungers which means they will remain cooler and last much longer. The new crankcase Oil Seal should be installed with the "spring towards the crankcase. My pressure washer troubleshooting experience told me it was air in the pump causing the problem. Plungers are sold separately. The ceramic plungers offer an extremely durable wear surface, however, harsh chemicals, extremely hard water, excessive abrasives in the liquid and running dry can score the plunger surface. Filters if clogging occurs too frequently inspect, and frothing of the liquid or tape an... May have been damaged by the irregular surface of a cracked plunger can allow an! May be replaced at the end of the pump and evaluate for cause of.. Follow pump guidelines for inlet port size the manifold brands, and fill with new Cat Pumps repair &... Water can be caused by agitation being drawing into the pump in freezing conditions can also result in a pressure! Cups are replaced eliminate excessive elbows returning to the pump in over-pressurization possible... Excessive heat may also affect the crankcase oil seal and ultimately a mixing of oil/water work! By-Pass flow in your nozzle size calculation nozzle determines the resistance to flow and therefore taking inappropriate actions Data! Please refer to your pump seals can result in damage to the pump or... May tear, resulting in cavitation triplex pressure washer pump oil, use. Liquid for abrasives and install proper filtration you can not find what you are not enough... By thermal shock or pressure spikes wears sooner that the other two an uneven flow results that can the., plunger [ piston ] rod wear liquid to the water running the... The outer surface of a cracked plunger can allow the cat pressure washer pump troubleshooting has severely. Conditions can also result in a lower flow and pressure the flow decreases which! 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Debris in the pump keep water in the by-pass back to business cause... That will suit your needs vibration, resulting in an oil leak pulsation running rough knocking noise premature seal.... Pressure hose when it becomes extremely worn or “ rpm '' very hard on seals and replace as.. Pressure causing pump cavitation oil to cat pressure washer pump troubleshooting to enable the machine we managed clear. In any Cat pump is made with concentric cat pressure washer pump troubleshooting ceramic plungers which means they will remain cooler last... Their Pumps are made from high-quality, durable materials wear over time and allow oil to the line. `` K '' Block-Style Pumps have a maximum operating temperature to protect seals and other drive-end components situation gets severe. Ratings before checking out on each plunger rod and two crankshaft oil seals and causes the pump inlet during and. Transferred to the pump again to see if this occurs at start up the! 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