I bought an expensive rebuild kit for an older Craftsman washer. I took the pump apart and replaced nearly every seal. Put it back together and it still does not build pressure.

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R

Gas or electric? Is it the kind that has a seperate motor (direct drive or belt) and pump? I don't have much experience with craftsman stuff, but more comet, general, etc (professional grade). Was it leaking on the outside of the pump before the rebuild, or just not builiding pressure?

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1989 300E 144K

It is a gas powered with pump attached at bottom of vertical shaft. I am not sure what it was doing before I attempted the rebuild. It was given to my father about 5 yrs ago. I suspected it was ran without water being turned on.

It leaks at pump from various places when trigger not pulled. Leaking slows when trigger is pulled but nozzle has no pressure.

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R

I have a Karcher pump with a Honda gas engine (Costco) that has a similar problem. The pressure comes and goes - it usually starts out good but I have to keep squeezing the trigger because if I letup it will never presssure up again.

I called a rebuild shop locally and they tell me that there is a 'spool valve' that goes out that should be rebuilt/replaced - they quoted me ~ $60. I've been limping along for a while but I'll need to do it eventually.

Call your local shop and see what they say about the service/rebuild.

Good luck -
James

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K

that's a good price. is that parts and labor?

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Ben
1987 190d 2.5Turbo

Many times, what happens is that people leave water in them over the Winter and it freezes, cracking the pump apart in multiple locations. Easiest thing to do is suck a little anti-freeze into the injection port prior to putting it away for the Winter.

Here's a pretty decent pump for cheap: (cheap being a relative term...)

http://www.northerntool.com/shop/tools/product_200305966_200305966

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

In almost all cases the "spool" valve is bad. It allows the pump to keep running even when you don't have the trigger on and spraying. Where would all the water go, if not back around the pump. Not too hard to find on most models. It's sort of like a reversed check valve.

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DS
2010 CL550 - Heaven help me but it's beautiful
87 300D a labor of love
11 GLK 350 So far, so good
08 E350 4matic, Love it.
99 E320 too rusted, sold
87 260E Donated to Newgate School
www.Newgateschool.org - check it out.
12 Ford Escape, sold, forgotten
87 300D, sold, what a mistake
06 Passat 2.0T, PITA, sold

Las Vegas NV