Skip to main content ↑ ↓
Topic: Thomas compressor piston removal (Read 622 times) previous topic - next topic

Thomas compressor piston removal

hello everyone

I got my major rebuild kit and I have no idea how to remove the piston and counterbalance from the axel.
any ideas??

it was very noisy and when I opened it up the shims  holding the piston to the bearing were gone.

Re: Thomas compressor piston removal

Reply #1 –
See if Steve's write up on our old blog has relevant info:  HWH Pump Rebuild

Re: Thomas compressor piston removal

Reply #2 –
I did and it does not detail anything about the painfull removal of the bearing and counter balance.


i went to the part store and got a pulley puller and i managed to damage the  piston rod

back to square one.. i need to find a piston rod replacement.

After i pulled the old piston and counter balance off( it was hard because of their offset and first i pulled the bearing and the counter balance  and then i had to pull the center piece that goes inside the bearing and that its offset as well an i was only able to pull from the sleeve that is behind it.)

after i reinserted the new piston rod i inserted the counter balance at the same time and moved them towards the end together  and then i realized that the metal shaft pin would not go inn because the counter balance was smashed  and i should have pushed them in one at the time and instaling the rod pin right after the piston was inserted.

I will call on Monday see if they have just the new piston Assy.

Re: Thomas compressor piston removal

Reply #3 –
I'm not sure what you paid for the rebuild kit, and now add more parts to that, but maybe a replacement pump would be a more economical option?  Not to mention there are much higher CFM pumps available.

Here's what I did:  Aux air pump system replacement

Re: Thomas compressor piston removal

Reply #4 –
what did the whole project cost


and yes how many days worth of work?

Re: Thomas compressor piston removal

Reply #5 –

My project total was more time and cost, but fourdayoff just did the pump swap.  The Air Zenith pump runs $369 on Amazon.  It pulls 35 amps, about 7 more than the Thomas.  The circuit breaker for the Thomas pump is a 40a.  I used the same wiring and left it on that circuit breaker.  No issues.

Amazon.com: Air-Zenith OB2 Fast-Fill Heavy Duty Air Compressor : Automotive

As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.

Re: Thomas compressor piston removal

Reply #6 –
On a new note .
I called Zoro and explained what happened and they will warranty me a new part. Great customer service from Zoro.
 

Re: Thomas compressor piston removal

Reply #7 –
As Keith stated I did just replace the Thomas compressor, I was able to modify the original muffler to use also and I'm very happy with it. I was going to go the route you did but just could not justify the cost then still have a 20yr old compressor. Jim.