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From: Clare Snyder <clare@snyder.on.ca>
Newsgroups: rec.crafts.metalworking
Subject: Re: Pressure washers
Date: Wed, 22 May 2024 16:52:53 -0400
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On Wed, 22 May 2024 07:16:09 -0500, Snag <Snag_one@msn.com> wrote:

>On 5/21/2024 9:24 PM, bp@www.zefox.net wrote:
>> Snag <Snag_one@msn.com> wrote:
>>>    I was given a Troy Bilt a couple of weeks ago because it "wouldn't
>>> build pressure" and I think I figured out why . There is a ball check
>>> vent valve on the HP outlet . The spring holds the ball off the seat
>>> under normal hose pressure but as soon as the pump builds pressure the
>>> ball is supposed to seal the outlet . Except the ball and spring are
>>> missing ... Soooooo , the question is , if I can't find the ball and
>>> spring can I just plug the hole ? I think the only difference it will
>>> make is that I'll have to hold the wand trigger down while starting the
>>> unit . I just replaced the bypass valve because it had a crack on the
>>> piston head . I think the missing ball and spring are venting enough
>>> pressure that the bypass valve never opens . I'd like to get this unit
>>> running , it has higher pressure and flow rate than the last one I got
>>> for free .
>> 
>> A bit confused here; does the missing ball check valve vent to air?
>
>
>   Yes , it vents to air . Near as I can tell it's purpose is to vent 
>pressure as the motor comes up to speed . My other gas powered washer 
>doesn't have that feature and you must hold the wand trigger down to 
>start it . I'm pretty sure plugging the hole will result in having to 
>hold the trigger down to start this one too .
>
>
>> 
>> FWIW there's a Youtube channel called "Mustie1" with at least a few
>> pressure washer salvage videos, along with many more.
>> 
>> bob prohaska
>> 
>
>   I haven't watched any videos , but I did download the repair manual 
>and the parts diagram . The diagram shows a ball and spring under the 
>vent nipple , it's missing on this unit . Inspecting the nipple shows a 
>bright ring where that ball has seated on a machined shoulder . I can 
>think of no reason to have this feature but to relieve pressure at 
>startup . The nipple will be going to town with me this morning to see 
>if I can find suitable replacements . If I can't , I'll plug the hole 
>and see what happens . And if I can't get this thing to run , I'm only 
>out about 25 bucks for parts and I'll have a 6.5 Hp B&S OHV motor that 
>can be used for other things .
  Replace the spring and ball with a manual valve - open to start,
shut to run