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Starting Member


Monday, March 15th 2010, 3:01pm

Hunter PGP Rotor Leaks

I have several Hunter PGP rotors that have developed leaks between the Pop-up Body and the Body Cap. I noticed on the Hunter drawing that there is a Seal Replacement Kit available. Is the kit a.) likely to fix my problem?; b.) worth the effort compared to just replacing the entire assembly?; c.) is the kit available?

I am also curious why I have several of these rotors leaking and if it's due to the relatively cold winter (in Houston, not Minnesota)? The house/sprinkler system is about five years old, but I just bought the house last fall and don't really know if this problem was pre-existing.



Supreme Member

Posts: 482

Location: Houston, Texas


Monday, March 15th 2010, 9:12pm

before you spend the money, spend the time. Withe the water not on tighten the cap on the rotor. Give it a try.

If not change the rotors.

good luck
:thumbup: :thumbsup:
LI0006121, BPAT0011021, CI0009500


Supreme Member

Posts: 5,325

Location: Metro NYC


Tuesday, March 16th 2010, 3:31pm

Leaking seals are a major failure point with Hunter rotors, because the tolerances are so fine. I would place little faith in replacement seals, but who knows, you might luck out. The rotor mechanism itself is likely to work for a long time yet. Make sure replacement heads aren't set too low, as it accellerates wearing of the seals.




Thursday, April 15th 2010, 7:07am

same problem

I am having the same problem....have a good stream of water that is leaking off into my driveway when my rotors pop up..they still spray fine just leaking.....I also have one the lawmower clipped the top off on.....being new to this, is it correct if you twist out the insides there is no need to dig and unscrew the body from the actually pipe?




Thursday, April 15th 2010, 7:20am

also if I need to buy three new heads where is a good place to buy them online? How easy/hard is it to replace these and get them adjusted correctly?



Posts: 2,365

Location: USA


Thursday, April 15th 2010, 1:14pm

Hi, yep you can just unscrew the innards of a pgp and swap them out. It's a good idea to keep the empty body because the pgp threads will on occasion split open.
As far as adjusting goes, it's fairly simple once you get the hang of it. You may find it tricky at first. You have to physically turn the sprinkler to the right where you want the water to go. Then use the tool to adjust how far you want to it to turn to the left.

You can buy them online here.




Friday, April 16th 2010, 8:20am

Do you need any special tool to unscrew the body out or just a pair of pliers? I just ordered three heads....simple screw out and screw back in replacement process?



Posts: 2,365

Location: USA


Friday, April 16th 2010, 2:41pm

I use channel lock pliers.


Active Member

Posts: 26

Location: New Zealand


Saturday, September 19th 2015, 9:18pm


Do you need any special tool to unscrew the body out . . .
I made myself a special tool out of some plastic pipe,
using a new PGP top as a guide. Marked out the ridges
and then cut slots in one end of the pipe, with 2 holes
through the other end (at right angles) to stick an old
bit of broom handle through, on which a slight whack
usually breaks the seal.


Saturday, January 2nd 2016, 12:22pm

Hunter PGP Rotor Leaks

Hunter PGP seals will leak after 3-10 years depending on water sources. If you take them apart you can push down the cap and grab the spring then raise the cap back up. Wipe the seal clean with a cloth and silicon spray to remove the white/gray gunk on the seal. This is not easy but saves a buying a new one.

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