Departments
Brands
Top Brands
Brands You Follow
Stores
Nearby
You Visited
You Follow
You Search For
Topics
Hottests Topics
Catalogs
Featured Catalogs
People
Trendsetters
People Like You
Apps
Your apps
Discover apps
Get Advice
Top Questions
Your Q&A
Friends Asked
Ask A Question | Show All Questions
More on ShopYourWay
Manage My Life

My air compressor does not reach full pressure. What parts do I need to replace to fix it?

by Manage My Life Last activity date:
November 22nd, 2010

Sears Craftsman Permanently Lubricated Air Compressor; Model 919.155731; 3.5 HP 25 Gal tank; purchased 10/92; The compressor runs well but it peaks at about 50 psia.and last year it went to 100+ psia. The air filter is missing, but everything else is as it should be. I do not hear any air leaks when the motor is not running, yet it will slowly lose the 50 psia over time. I have the parts list and the exploded view. It appears that the means of compression is an 'O' ring on the head of the piston. If I replace that plus the gaskets, will it resume its function? Is there something else I should do?

Tags:
Air Compressors , Craftsman
Be the first to comment
Ask your friends
Answers (2)
Manage My Life
This compressor seams to have a problem with the reed valves. They are not available from Sears.
I have tried to find them ,but, no luck so far. If anyone knows where to find them please let me know.
Thank you, Dale botlecap48@hotmail.com
by Manage My Life
November 22nd, 2010
| Be the first to comment
0 votes
Joey S
Running the compressor without a filter can cause a failure within the valve plate assembly. I can't be certain of your failure but the valve plate assembly is no longer available. Replacing just the o-ring may not resolve your problem. If you do replace the 0-ring be sure to replace the head gasket too.
by Joey S
April 28th, 2010
| Be the first to comment
0 votes
Add your own answer
Sign in to answer a question
Didn't find what you are looking for? Ask a question