| Proper oil for your Cat Pump® |
| Each pump requires a specified amount of oil. You can find the specified amount on the pump Data Sheet under crankcase capacity. Be sure the pump is on a level surface for an accurate reading. For most pump models, you fill the crankcase with Cat Pumps'special formula crankcase oil until it reaches the red dot on the bubble gauge. Wait a few minutes after filling and check the level again before operation. Sometimes air bubbles can cause a false level reading. Add additional as needed. For the 60 Frame pumps, a dipstick is used instead of the bubble gauge. After adding the specified amount, check to see oil is reading on the dipstick. Overfilling will cause oil spitting out the oil filler cap. Under filling the crankcase will not allow adequate lubrication in the crosshead area and may result in drive-end failure. |
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| Standard and Food Grade Oil for Cat Pumps® |
| Cat Pumps® has developed a special formula, premuim grade, ISO68 hydraulic oil with advanced anti-wear stabilizers and anti-corrosion technology to provide protection for the pump drive-end and extended life for the pump. These additives help prevent premature breakdown of the oil and provide maximum lubrication to the crankcase components. For standard pumps through our 60 FR, oil is available in bottles[PN 6107], cases [PN 6100][12-21oz bottles] or 5 gallon twin-packs [PN 6105]. The 150 Frame pumps use an ISO-100 oil that is available in 5 Gal[PN 6115] and 16 Gal [PN 6116] containers. If Genuine Cat Pumps' oil is not available or you have a food application, you may use an alternative oil, however, these typically do not have all the special additives of our special formul and may need to be changed more frequently. These alternative oils are special hydraulic oils and they are not typically off-the-shelf items. Contact Cat Pumps or ask your local distributor for our Oil Alternatives List. Look for the Cat Pumps logo on the oil container to assure you are using our special formula premuim grade.
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| What oil do I use for the three crankcase holes? |
| Most pumps are equipped with lubrication holes at the top front of the crankcase or top of the inlet manifold. These holes are for lubricating the seals [wicks when used]. If a rigid maintenance schedule is maintained, it is not necessary to add this additional lubrication to your pump. The lubricant will vary with the application and concern for contaminating the pumped liquid.
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| Why do I have oil and water mixing in my pump? |
| If the pump is properly maintained , there should not be any oil and water mixing. If the Lo-Pressure Seals and Hi-Pressure Seals are allowed to run after they have become worn, water may eventually travel back along the plunger rod and past the barrier slinger. Eventually the rod becomes scored and will cause wear to the Oil Seal in the crankcase port. Remember to replace the plunger retainer o-ring each time the LPS and HPS are replaced. This worn oring will also allow water to travel back towards the crankcase. Generally, the water will be drawn into the crankcase, but if left running long enough, some oil can be drawn forward. This will generally be trapped in the wick or leak out of the pump. |
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| Why is oil spitting out the oil cap? |
| The oil cap on the crankcase is vented to relieve normal pressure in the crankcase. If the crankcase is over-filled, the pump is not on a level surface or water has gotten into the oil, spitting out the oil cap can occur.
Check the oil level and drain off a small amount, if the oil is above the centerline on the bubble gauge. Keep the pump horizontal during operation. Check the oil for clarity and level each time the seals are serviced. Change crankcase oil according to recommendations in the service manual with CAT PUMPS custom-blend oil. |
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