1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)

Could this be the problem?

Post in 'DIY and General non-hearth advice' started by Adios Pantalones, Feb 18, 2013.

  1. Adios Pantalones

    Adios Pantalones Minister of Fire

    Joined:
    May 20, 2008
    Messages:
    6,443
    Loc:
    S.NH- Mass's smoking section
    Found this in the gearbox of my snowblower. Now I have to remove rusted in 1/4" roll pins- tried pb blaster, heat, kinetics. I understand that mechanics or machinists may use a hydraulic press?
    image.jpg

    Helpful Sponsor Ads!





  2. Dune

    Dune Minister of Fire

    Joined:
    Jan 14, 2008
    Messages:
    2,830
    Loc:
    Commonwealth Of Massachussetts
    MasterMech and Jags like this.
  3. Adios Pantalones

    Adios Pantalones Minister of Fire

    Joined:
    May 20, 2008
    Messages:
    6,443
    Loc:
    S.NH- Mass's smoking section
    Tried that. It looks like removal is a common problem
  4. btuser

    btuser Minister of Fire

    Joined:
    Jan 15, 2009
    Messages:
    2,030
    Loc:
    Principality of Pontinha
    A little JB Weld will set you right again.

    Little stick'em, Little Vicks and you'll be right as rain.
  5. ScotO

    ScotO Guest

    the old rototillers used a brass bullgear also, I've seen many of those bust the teeth off and they were a b*tch to get off of the shaft.....
    I'd use a little heat, then if you can, put the part of the shaft with the split ring in it over a socket large enough to punch the pin into it. you'll definately need a pin punch, or maybe you can find some steel rod that's the same diameter. But a pin punch will be better. I'd soak it good with a catalyst spray, then put a little heat to it before driving it out...
  6. ironpony

    ironpony Minister of Fire

    Joined:
    Jan 22, 2010
    Messages:
    1,843
    Loc:
    mid-ohio via St.Croix USVI
    the gear is probably designed to be the weak link, now getting it apart to change it is another story. soaking, heat and pin punch as stated above. Mke sure it is a straight sided pin not tapered, which means it will only come out from one side, not likely but possible.
    SmokeyTheBear likes this.
  7. Adios Pantalones

    Adios Pantalones Minister of Fire

    Joined:
    May 20, 2008
    Messages:
    6,443
    Loc:
    S.NH- Mass's smoking section
    I'm replacing the whole gearbox, at a cost of $300. This was in my snowblower- I sucked up a big flat rock evenly with both augers, which jammed both sleeves against the auger drive shaft so that the shear pins didn't pop. The snowblower is 10 yrs old, but it's an Ariens and has never given me a lick of trouble- I think I'll get another 10 out of it with this fix.

    The roll pins hold the impeller to the shaft connected to the gearbox. Not that they would see some harsh conditions clearing my 250' driveway in NH for 10 years, but there may be a tad bit of corrosion. If I can't do it in another couple of sessions with it- I'll bring it to a machinist.
  8. Jags

    Jags Moderate Moderator Staff Member

    Joined:
    Aug 2, 2006
    Messages:
    15,232
    Loc:
    Northern IL
    Got two pairs of vice grips? Get them oriented so that you are collapsing the gap on the roll pin. Just breaking loose the connection of pin to hole will help a bunch.
  9. Adios Pantalones

    Adios Pantalones Minister of Fire

    Joined:
    May 20, 2008
    Messages:
    6,443
    Loc:
    S.NH- Mass's smoking section
    I wish I could- they're pretty close to flush with the hole
  10. Jags

    Jags Moderate Moderator Staff Member

    Joined:
    Aug 2, 2006
    Messages:
    15,232
    Loc:
    Northern IL
    Hmmm...my next step would be to beat the hell out of it.::-)
    Eatonpcat likes this.
  11. Adios Pantalones

    Adios Pantalones Minister of Fire

    Joined:
    May 20, 2008
    Messages:
    6,443
    Loc:
    S.NH- Mass's smoking section
    I'd drill it out, but it's got a real hard temper and it's at a weird angle. That $83 for a new impeller dont look so bad right now, except for coming after $300 for the gearbox.
  12. BrotherBart

    BrotherBart Hearth.com LLC Mid-Atlantic Division Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    29,024
    Loc:
    Northern Virginia
    As a former aviation mechanic I can assure you that there is nothing that can't be fixed with a bigger hammer. Out of the sight of pilots.
  13. Jags

    Jags Moderate Moderator Staff Member

    Joined:
    Aug 2, 2006
    Messages:
    15,232
    Loc:
    Northern IL
    I have never been able to drill one out. I think the pins are harder than the drill bits.;lol
    btuser, Dune and Adios Pantalones like this.
  14. WES999

    WES999 Minister of Fire

    Joined:
    Jan 12, 2008
    Messages:
    929
    Loc:
    Mass north of Boston
    If you can get to it with a drill,l a carbide tipped masonry drill may work.
    For frozen/rusted parts there is no substitute for the" blue flame wrench".
  15. Dune

    Dune Minister of Fire

    Joined:
    Jan 14, 2008
    Messages:
    2,830
    Loc:
    Commonwealth Of Massachussetts
    A little more info...a pic would help immensely.

    I assume the pins sit above the surface of the shaft somewhat, at this time?

    What heat source have you used so far?

    Penetrants? Heating then cooling with a stream of penetrating oil?

    Can you cut the pin flush with the shaft then file it flat?

    Use the correct roll pin punch with an engineers hammer or a large (48 0nz. minimum) ball peen?
  16. Dune

    Dune Minister of Fire

    Joined:
    Jan 14, 2008
    Messages:
    2,830
    Loc:
    Commonwealth Of Massachussetts
  17. ironpony

    ironpony Minister of Fire

    Joined:
    Jan 22, 2010
    Messages:
    1,843
    Loc:
    mid-ohio via St.Croix USVI
    also what will help is when striking the roll pin with the punch, back up the shaft behind the pin with a large hammer so the blow is solid not bouncing. might take 2 people.
  18. greg13

    greg13 Feeling the Heat

    Joined:
    Jan 5, 2012
    Messages:
    442
    Loc:
    CNY
    Grind the pin flush with the shaft. Use a taper punch to break it loose, then a pin punch to drive it through. BIG hammer if needed. I've never had one that I couldn't move.
  19. Adios Pantalones

    Adios Pantalones Minister of Fire

    Joined:
    May 20, 2008
    Messages:
    6,443
    Loc:
    S.NH- Mass's smoking section
    Got the pins out, now working on the impeller
  20. MasterMech

    MasterMech Guest

    WINNER!!!!!! I'll personally vouch for roll pin punches as being the best way to get 'em out. That combined with a dead-blow ballpeen hammer and I've not had any roll pins I couldn't get out, yet. Big difference from going at it with a standard drift punch, also called a "pin punch" at times. Roll pin punches have balls on the ends.

    Air hammers with the right tool in them can work wonders to. Mine hits about 3600 times faster than I can. >>

    A good support jig and something sized appropriately to press the pin out via hydraulics would be a slam dunk last resort solution for me.
  21. greg13

    greg13 Feeling the Heat

    Joined:
    Jan 5, 2012
    Messages:
    442
    Loc:
    CNY
    I use a taper punch to break them loose, than a pin punch. I have bent too many pin punches breaking seized pins loose.

Share This Page