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Sprayer Depot Blog

5 Signs of Roller Pump Wear

Posted by Sprayer Depot on Wed, Apr 01, 2015

7560C2014SchematicWe’ve talked a little bit about roller pump repair in the past and briefly explained some of the things to consider if you think it's time to consider repairing a broken or damaged roller pump. Today we’ll dive into the subject in more detail and share what to do to carefully inspect all parts of the roller pump for wear. From there you’ll be able to easily assess whether a repair kit is in order or, alternatively, if a full replacement pump is on your to-do list. Let’s get started.

When you’re looking for signs of wear, here are five areas to start. We’ll be using a Hypro roller pump as a point of reference throughout, but the main points apply to any make or model.

Housing Wear: The first place to look for wear is the housing. Make sure it’s in good condition, checking on both the inside diameter and the back face. Check 1/16” from the edge and look for a lip as an indicator of excessive wear.

Cover: Checking the cover might be the first place that you’ve looked for signs of wear. And well you’re not far off. When looking at the cover, keep an eye in the roller area in particular.

Rotor: When you’re looking at the rotor for signs of wear, you should look at its size. An undersized rotor, or one with worn roller slots, is a sign of excessive wear. To determine if it's undersized, you’ll want to measure the thickness of the rotor, which on a Hypro 7500 series roller pump should be 1.4995 at its smallest.

Rollers: Much like the rotor, undersized or swollen rotors in both length and diameter are not good. Measure the thickness and make sure it’s no smaller than 1.4995. Any smaller and it may be worn out and need to be replaced. Oh and make sure you replace rollers as a set, not just one at a time.

Shaft: Check the drive end of the shaft for wear (as well as in the seal area ) where signs of excessive wear include pitting or grooves. If it’s worn or pitted, the shaft needs to be replaced. Otherwise, it won"t seal properly.

After the above parts have been checked and the various points have been considered, decide if the pump is repairable. If it’s just a repair, grab yourself a repair kit and the following tools: socket, hammer, cradle (to support the housing), file and a measuring tool, to name a few. Then follow these steps to disassemble the pump: 

  1. Remove the adapter from the pump shaft.
  2. File off any burrs on the pump shaft.
  3. With a screwdriver, pry bearing covers off of the endplate and body.
  4. Remove the endplate bolts.
  5. Support the pump at its ports in a support fixture with the endplate down. Place it on a press bed. Center the press on the pump shaft and apply pressure to press the pump apart. Note that the shaft and rotor will remain with the endplate.
  6. Remove the rollers and endplate o-ring seal.
  7. To disassemble the rotor from the shaft, place the endplate in the support fixture with the rotor down. Center the 3/8" bolt on the pump shaft and apply pressure to press the shaft out of the bearing.
  8. With the endplate in the support fixture and the front of the endplate facing down, center the bearing support tool and slowly press the bearing out of the casting. Repeat the procedure to remove the bearing from the pump body.
  9. Punch the seals out of the endplate and body with screwdriver and hammer. Then discard the seals – seals can’t be removed without damaging them so you’ll need to replace them regardless.

Once the necessary repairs have been made and the pump is clean of debris. Reassemble the pump. Note that when you’re tightening the bolts tighten them in a crisscross pattern. Then check to see if the rotor is centered in the pump case by turning the pump shaft by hand. If the pump turns hard, place a wooden dowel against the end of the shaft, centering it on the shaft not the bearing. Tap lightly with a hammer. Try turning the shaft again and if it turns more easily you should be good. If this doesn’t do the trick, repeat the steps and tap the other end of the shaft. These minor adjustments will ultimately align the shaft, but if that doesn't work, try cleaning the pump - it's possible a piece of debris from a rag or something is caught inside.

Now that your roller pump is back in action, take care to ensure it lasts longer and performs better by taking care of it properly. After each use, make sure that you flush the pump with a neutralizing solution that's meant for the liquid you just pumped. Follow with a clean water rinse. This is especially important for corrosive chemicals. It is good practice to clean the pump after each use to prevent deposits from forming and damaging the pump.

Have any tips or tricks to add? Leave a note in the comments below. We'd love to hear from you.

Topics: Hypro Roller Pump Repair Kit, Sprayer Depot, Roller Pump, roller pumps, Hypro Roller Pump, Roller Pump Repair

3 Reasons Why You Should Buy a Pump from Sprayer Depot

Posted by Sprayer Depot on Wed, Aug 20, 2014

You’re on the market for a new spray pump. You have a pretty clear idea of what you need. After all, nine times out of ten it’s a replacement pump that’s on its last leg and in need of replacing. Not an easy pill to swallow when you have to buy one of the most vital parts for your sprayer. But where do you start?

Does this scenario sound familiar? Since we're more focused on your needs than your wallet, here we’ll share three foolproof tips to get you the best product for your needs at the best price. 

Tip #1: Inventory
Whether you’re in the market for a diaphragm pump, roller pump, centrifugal pump, piston pump, transfer or plunger pump, find a retailer that covers the spectrum with a variety of brands on hand for sale. Look for a retailer that carries major sprayer pump brands like Hypro, Udor, Comet, Banjo, Myers and SHURflo, to name a few. Since not all brands manufacture all pump types, at Sprayer Depot you’ll find a better selection for your needs and a more knowledgeable team to answer any questions. Sprayer Depot carries all the major brands for practically every type of spray pump at the best price.


Tip #2: Price Matching
Speaking of price, don’t be afraid to shop around. You’ll find out more about the product you’re looking for from kicking the proverbial tires at a few shops before settling on one. That will also give you a chance to scope out who has the best pricing policy – for example Sprayer Depot will match any competitor’s price (must be an authorized dealer/distributor). We strive to offer the lowest price on all major spray pump brands, but if you happen to find a lower advertised price from an authorized distributor, Sprayer Depot will match or beat that price! When you’re shopping for a part like a pump you know your going to have to spend a pretty penny so why not get the best deal.

Tip #3: Customer Service
You’re a pro so the customer service team from any retailer won’t show you how to do your job, but they can offer some insight into the latest tricks of the trade. At Sprayer Depot, our knowledgeable customer service technicians have more than 55 years of combined experience in the industry. Many of them have worked their way into the role through production jobs building the very sprayer you use today. So they know their stuff and speak your language. Plus, they’re not sales guys aiming to make commission – they genuinely enjoy what they do and strive to assist folks in finding the product that’s best for their needs.

So the next time you’re in the market for a spray pump, or really anything for your sprayer equipment, remember to consider inventory, price match policies and customer service. Better yet, just give the guys at Sprayer Depot a call or visit the online store. You’ll be in good hands.

Topics: Spray Equipment Maintenance, Hypro, Udor, Diaphragm pumps, Sprayer Depot, Sprayer Parts, diaphragm pump, Diapgragm pumps, sprayer, Centrifugal Pump, Roller Pump, centrifugal pumps, roller pumps, sprayer pumps, Udor Pumps, Transfer Pumps, Hypro Pump, Sprayer Pump, Roller Pump Repair, spray pumps, centrifrugal pump, Shurflo, sprayer equipment, parts, Comet Pumps, Triple Diaphragm Pumps, Pump, sprayer tips and tricks, customer service, Banjo, Myers, Myers Pumps, Banjo pumps, SHURflo pumps, buyer beware, price match, best price, lowest price

Is it time to replace your Roller Pump?

Posted by Marketing Manager on Fri, Jan 10, 2014

Is it time to replace your Roller Pump?

We receive a lot of calls from customers who want to repair their broken or damaged Roller Pump. Here are some things to consider:
  • Before buying and installing a repair kit for your Roller Pump, be sure that the housing of the pump is in good condition. 
  • If the housing of the pump is worn, new rollers won't be able to create enough pressure to move water through the pump. While you can purchase the pump housing as a replacement part, it is often more cost effective to buy a brand new pump.  
  • If you're not sure, take the pump apart, and send a picture to one of our Customer Service Technicians for help.
4001C Hypro Roller Pump
Visit our Facebook page and you could win Pressure Gauge - You can even pick the PSI.   Just "Like" our page to enter. One winner will be chosen at random and will be announced on our Facebook Page on Jan. 31st.


Download the Hypro Roller Pump Repair Kit: Assembly & Disassembly Instructions

Topics: Hypro, roller pumps, sprayer pumps, Hypro Roller Pump, Sprayer Pump, Roller Pump Repair

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