|
|
05-04-2016, 03:12 PM
|
#1
|
Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
|
I failed at impeller install
First time trying to change an impeller on a larger engine and I failed miserably.
Cummins QSB 5.9L with a Sherwood water pump. With great effort (and an impeller puller) I was able to get the old impeller out. However, I was not able to get the new in. I was able to get the vanes inside the housing and push the impeller in until it hit the shaft. I was not able to get the splines lined up on the shaft and push it all the way in. Unfortunately, the angle is a bit awkward and hard to get much leverage on he impeller to both twist and push at the same time. I finally had to give up in humiliation.
Open to any and all suggestions. If worse comes to worse, I have a mechanic coming out on Friday to reinstall my HX and after cooler. I am sure he can do it. But it is something that I need to figure out for the future.
|
|
|
05-04-2016, 03:25 PM
|
#2
|
Guru
City: Stuart FL
Vessel Name: Lucky Lucky
Vessel Model: Pacific Mariner 65
Join Date: Aug 2013
Posts: 2,760
|
How frustrating. Compress the vanes with a series of wire ties. Don't worry which way they compress they will fix themselves when the pump starts. Lube the impeller and shaft generously with grease of some sort; I use white lithium grease. As you push the impeller into the housing, cut each wire tie as it reaches the edge of the housing.
Hope this works for you. Good luck.
__________________
Howard
Lucky Lucky
Stuart, FL
|
|
|
05-04-2016, 03:30 PM
|
#3
|
Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
|
Thanks Howard. I did try a wire tie, but I will try multiple.
|
|
|
05-04-2016, 03:34 PM
|
#4
|
Guru
City: Atlantic Highlands, NJ
Vessel Name: Moana Huaka'i
Vessel Model: Selene 53
Join Date: Dec 2014
Posts: 816
|
Everything Howard said and some patience.
if it still doesn't work, try putting the old impeller back in. if it goes in double check you have the right replacement.
|
|
|
05-04-2016, 03:46 PM
|
#5
|
Guru
City: Port Orchard, WA
Vessel Name: Violet A
Vessel Model: Nordic Tug 42
Join Date: Mar 2008
Posts: 908
|
It's a tough job, Dave. However I have been able to do it on the same engine so you know it is possible. Howard's advice is just what you need to do. I use at least 2 ties and compress the vanes so they have a smaller diameter than the pump and lube them well. I use SuperLube for this. It's still a struggle and I use a hammer to tap the impeller home. Make sure you have a small block of wood to protect the impeller.
You can get impellers that are threaded inside so you can use a bolt that you screw in the middle of the impeller which forces it out. I think the bolt is 3/4" but I'm not sure.
I believe this impeller is Sherwood 17000K, Fisheries sku# 86082. That's the one I recently bought for my Cummins 8.3.
If you have this impeller with the threads, you can buy a short bolt screwed into the impeller to protect it from the hammer technique.
Good Luck
__________________
Ron
The five stages of life: Sailboats, Motorboats, Motor Homes, Nursing Home, Funeral Home.
|
|
|
05-04-2016, 03:56 PM
|
#6
|
Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
|
Thanks Ron. I have an impeller puller that worked, but there is not a lot of room for it. A bolt might be easier.
The zip tie idea sounds good. I need to get some larger ties.
|
|
|
05-04-2016, 04:04 PM
|
#7
|
Guru
City: Santa Cruz, CA
Vessel Name: Concerto
Vessel Model: 1980 Cheoy Lee
Join Date: May 2013
Posts: 1,531
|
Did you try bumping the starter to get the spline to line up?
|
|
|
05-04-2016, 04:16 PM
|
#8
|
Guru
City: Here
Join Date: Sep 2012
Posts: 2,940
|
don't know if it would work in your situation but I used to have Perkins HT6-354 and it was much easier to remove the pump and replace the impeller sitting at the dinette with a coffee.
|
|
|
05-04-2016, 04:19 PM
|
#9
|
Guru
City: Tri Cities, WA
Join Date: Nov 2012
Posts: 4,406
|
I came up with an idea the last time I changed the Cat impellers and it made the job of installing them much easier.
I cut the middle section out of an empty milk jug, making the section about 3" tall and the strip long enough to go all the way around the impeller and overlap an inch or two.
I wrap the section around the impellers then put the zip ties on the outside of the plastic strip. As I tighten the zip ties (I use 2 because of the height of the impeller) it forces the plastic strip to compress the vanes on the impeller. This works the same way as tightening the zip ties without the plastic strip, except the plastic strip makes the compression of the vanes much simpler.
I then apply some dish soap and start to slide the new impeller into the housing. AS the impeller goes in the plastic piece hits the end of the housing and it stays in place as the impeller slides out of it and into the housing.
Works like a charm.
__________________
Mike and Tina
1981 Boston Whaler 13'
|
|
|
05-04-2016, 04:59 PM
|
#10
|
Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
|
That actually sounds like a pretty good idea. I may give that shot.
Lets see... Impeller is 3.5" in diameter, so the circumference would be 2*3.14*1.75=11". So 12" zip ties should do it.
|
|
|
05-04-2016, 05:06 PM
|
#11
|
Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
|
Quote:
Originally Posted by dhays
That actually sounds like a pretty good idea. I may give that shot.
Lets see... Impeller is 3.5" in diameter, so the circumference would be 2*3.14*1.75=11". So 12" zip ties should do it.
|
The first inch or so of a tie is smooth. You might want to pick up some longer ones.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
|
|
|
05-04-2016, 05:14 PM
|
#12
|
Guru
City: Annapolis
Vessel Name: Ranger
Vessel Model: 58' Sedan Bridge
Join Date: Aug 2013
Posts: 7,087
|
Quote:
Originally Posted by hmason
As you push the impeller into the housing, cut each wire tie as it reaches the edge of the housing.
|
Quote:
Originally Posted by dhays
Thanks Howard. I did try a wire tie, but I will try multiple.
|
Try pre-compressing with hose clamps, each one tighter than need be. As you remove the inner-most clamps, subsequent clamps can (usually) compress the rascal enough to help you continue sliding it into place...
-Chris
__________________
Chesapeake Bay, USA
|
|
|
05-04-2016, 05:15 PM
|
#13
|
Guru
City: Vermont
Join Date: Jan 2013
Posts: 10,092
|
I found that a piston ring compressor works wonders for getting large impellers installed.
OEM/Piston ring compressor 27039- Read1Reviews onOEM #27039
Be sure to get the full cuff style, not the smaller band that looks like an oil filter wrench.
__________________
MVTanglewood.com
|
|
|
05-04-2016, 05:36 PM
|
#14
|
Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
|
Another good idea.
|
|
|
05-04-2016, 05:41 PM
|
#15
|
Moderator Emeritus
City: Home Port: Buck's Harbor, Maine
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,846
|
Quote:
Originally Posted by twistedtree
|
Good advice. I finally broke down after years of frustration and bought this: Stanley Proto J2316 Proto Piston Ring Compressor - Hand Tool Sets - Amazon.com.
With a little grease, worked slicker than a weasel. Tighten the compressor down somewhat narrower than the opening and you have leeway inside the pump cavity to wiggle the impeller onto the splines.
Also, I replaced the hex head bolts on the impeller cover with SS socket head cap screws (I think that Flywright put me onto this). Helpful.
__________________
David Hawkins
Deer Isle, Maine
|
|
|
05-04-2016, 05:56 PM
|
#16
|
Guru
City: Everett Wa
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,919
|
I use several hose clamps.
|
|
|
05-04-2016, 06:42 PM
|
#17
|
Guru
City: Tri Cities, WA
Join Date: Nov 2012
Posts: 4,406
|
My piece of plastic works just the same way as the piston ring compressors, but mine was free, and not quite so fancy.
__________________
Mike and Tina
1981 Boston Whaler 13'
|
|
|
05-04-2016, 06:46 PM
|
#18
|
Moderator Emeritus
City: Home Port: Buck's Harbor, Maine
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,846
|
Quote:
Originally Posted by Phil Fill
I use several hose clamps.
|
Have done the hose clamp routine. Major PITA. Especially where slippery lubricant is involved. Why use several clamps that you need to individually tighten/loosen when you can just use a piston ring compressor that tightens the impeller uniformly?
__________________
David Hawkins
Deer Isle, Maine
|
|
|
05-04-2016, 06:47 PM
|
#19
|
Moderator Emeritus
City: Home Port: Buck's Harbor, Maine
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,846
|
Quote:
Originally Posted by GFC
My piece of plastic works just the same way as the piston ring compressors, but mine was free, and not quite so fancy.
|
That'll do it.
__________________
David Hawkins
Deer Isle, Maine
|
|
|
05-04-2016, 07:19 PM
|
#20
|
Master and Commander
City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
|
Best of luck. Not being an engine mechanic, I leave impeller replacement to him, Fortunately, I never boat very far from him.
__________________
Kar-KEEN-ez Koot
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Trawler Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|