Jensen a530t track roller bearings

[swinny]

Just looking at changing the track roller bearings as they are shot on one side!

 

There's 3 little rollers, these require bearings and shafts thats fine, the big one at the front!!!

 

What a PITA! Theres a flat leg down either side, with a pin through the roller, split pins secure the pin through the roller to the flat legs.

 

Absolutley no chance them pins coming out. Im hoping you can get the 2 flat legs and the pin inc split pins from redwood! So i can just cut the bugger off and get my roller off.

 

Anyone had any experiance with this repair?

 

Also redwoods or local bearing factors for bearings?

 

Cheers

[monkeybusiness]

I haven't any experience of this repair on a Jensen but have done a couple on Greenmechs which sound the same set up. I assume you have removed the whole tensioner assembly from the machine (ie track off and pull roller and flat legs straight out)? If so then get rollpins out and put assembly on a press to force pins out - heat up legs first if necessary. The pins can bind in the roller if the bearings are totally shot and the pins have subsequently been eaten away - you are possibly going to need to machine the rollers to take new bearings if that is the case (more than likely still cheaper than replacing the assembly with new, if you can source new). I ended up taking the whole tensioner assemblies to a local agricultural engineers and they rebuilt with new pins and bearings - cracking job!

[swinny]

Same setup monkey but them roll pins wont come out! Seized solid. And ones got a punch snapped 20mm in!

 

Im hoping them flat legs are avaliable then i can buy them and cut old ones off inc pin.

 

Bearing are shot big time, just bearing races left.

 

So for others will require pins and bearings also

 

Cheers chris

[Ian C]

Can you not get some heat on them?

[swinny]

Think i'll try again with a blow torch tomorrow. I ran a drill down centre of roll pin to remove all solid gunk in a hope it would give it some room to help come out!

[Ian C]

Good localise heat and a punch and they should pop out.

[monkeybusiness]

If you do cut them off and weld new on you'll have to be certain that you get them on dead square or they will be a nightmare to re-assemble and won't last very long once rebuilt. I'd concentrate on getting the old pins out and re-using the original flat legs if at all possible personally. Oxy will free everything off if you can get hold of it, and good quality correctly sized punch. Good luck!

[monkeybusiness]

Also make sure the new bearings are a real good pressed fit when you come to rebuild - any play will quickly increase once back in use unfortunately.

[Gary Prentice]

. Oxy will free everything off if you can get hold of it, and good quality correctly sized punch. Good luck!

 

It'll also melt everything if you're not careful:sneaky2: experience has taught me.

 

Heat a little and tap, repeat until out. Patience is definitely a virtue and is often required. Good luck

[swinny]

Been out today and bought some 'decent' punches and a blow torch for myself.

 

Extracted my cheapo snapped punch, then knocked the roll pin out with heat and decent punch!

 

Cheers everyone