Technical & Reference Section > Tech and Restoration

Stuck seat post in an 88 Haro Master

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tfi_friday:
Hi,

I recently picked up an '88 Haro Master that had a stuck seat post. I knew it was stuck well after the previous guy tried with the LBS to remove the post and failed.

The LBS effort to remove the post resulted in a crushed GT post.. shame, but at least I don't have to have any guilt conscience about trashing the post to get it out.



So now it was my turn:

tfi_friday:
First though was how hard could it be...

So I started soaking the tube in Automatic Transmission Fuild. I stuck a cork in the end of the seat post and filled up the seat tube from the BB till it was full.

Occasionally heating it up to see if that helped with getting the oil deeper into the space between the seat post and tube.



Gave it a few days then tried the vice again... and again... and again.

Snap! The seat post torn off...  Thankfully I was still left with plenty above the seat tube.

tfi_friday:
Plan B - The slide hammer

So I drilled a hole in the post and attached a u-bolt, then attached a slide hammer to the u-bolt with a chain.





Spent an good hour whacking on it... to the point the chain even snapped.



Tried some more with the slide hammer directly connected to the u-bolt before I gave up..

tfi_friday:
Plan C - the Pulling Jig

Next idea was to make a Jig and to be able to pull the post out under tension using  box section and a threaded bar...
Something like this:



So welded it all up and tightened it up and gave it a try... How could this fail!!  8)



It failed....



 >:(

In2bmx:
Good effort Alan.  :4_17_5:

Glad you finally got the thing out  :daumenhoch:

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