Vermeer SC362 - Stuck Boom Head Lift Pivot Pin

[arto98607]

I have been checking my stump cutter for excess wear and found fair bit of slack in the "Boom Head Lift Pin" and bushings (Items 2. & 4. below), and would like to R&R the pin & worn bushings.


Problem:
The pin is stuck and has so far not budged!
I have removed the bolt and large nut (items 4. & 6.) holding the pin place, and have applied fair amount of heat to the boom head collars and tried to drive out the pin with a large hammer & brass pin, but so far the pin has not moved at all.

(The boom head is made of cast iron and will probably break if hit too hard)



Boom Head & Item 2. Lift Pin


Main Frame & Item 4. Bushings for Boom Head Lift



Question:
Has anyone here had to deal with this issue in SC362 and how did you get the pin to move without breaking the cast iron boom head (close to $500 part)?

 

[Rustyiron]

A week of penetrating juice since you've tried heat?
I just happened across a "YouTube guy" that swears by heating the pin to a point where it'll melt candle wax and draw it into the friction points.....
I've never tried this yet but there's hope with optimism.

 

[Dman1981]

Broco rod just need some
Oxygen and battery
Working on dozers don’t leave home without it

 

[arto98607]

A week of penetrating juice since you've tried heat?
I just happened across a "YouTube guy" that swears by heating the pin to a point where it'll melt candle wax and draw it into the friction points.....
I've never tried this yet but there's hope with optimism.

Have been spraying penetrating oil in-between heating & cooling it for over a week now, so far not helping.
I have been hesitant to heat the boom head collars lot more, but that I could do easily with a large oxy-acet torch.

Broco rod just need some
Oxygen and battery
Working on dozers don’t leave home without it

Sorry, cutting the pin with oxy-rod is not feasible without destroying the $500 cast iron boom head!

 

[Dman1981]

Have been spraying penetrating oil in-between heating & cooling it for over a week now, so far not helping.
I have been hesitant to heat the boom head collars lot more, but that I could do easily with a large oxy-acet torch.



Sorry, cutting the pin with oxy-rod is not feasible without destroying the $500 cast iron boom head!

Keep beating then that’s what I always say

 

[Dman1981]

The other thing about cast is if you keep
Heating it it will actually shrink
So once you heat you need to hit it or figure out a press to work on it
I have shrunk quite a few castings so pin would fit tighter

 

[TripleS]

Put freon on the pin and it'll drive out

 

[Dman1981]

Put freon on the pin and it'll drive out

When I put axle bushings in the dozers we used liquid nitrogen
It was like chemistry class all ov again