O.S.140 RX

[mdarr00 at comcast.net]

    Sorry Dave, my last e-mail stated that the tang should be about 3 1/6 long.  The correct size is 3/32 of an inch.

Mike Darr
  ----- Original Message ----- 
  From: mdarr00 at comcast.net 
  To: discussion at nsrca.org 
  Sent: Saturday, February 01, 2003 5:37 PM
  Subject: Re: O.S.140 RX


      Dave, the tang on the clip should only be about 3 1/6 of an inch long, it does not go all the way across.  You need to use some very small needle nose pliers to remove the clip.  I can be tricky though, because the clip will just want to keep on spinning in the groove.  It really is not that bad though.  The inside of the wrist pin is not threaded.  Once the clips are removed you should just be able to use a pick or small scewdriver to push the pin through the other side.  Sometimes there will be some build-up on the piston, so the wrist pin may come out easier one way, as opposed to the other.


  Mike Darr
    ----- Original Message ----- 
    From: Dave Smith 
    To: discussion at nsrca.org 
    Sent: Saturday, February 01, 2003 10:06 AM
    Subject: O.S.140 RX


    HELP!     In disassembling the above engine,I have run into a problem in removing the clip holding the wristpin in place.

    The tang of the clip is so short,it seems nearly impossible to grip it in order to remove it. According to the diagram in the instructions,the tang should go almost all the way across to the other side of the clip. It is almost as though the tang was broken,[like used to happen on engines using this system years ago,such as the Kraft .61],but there is no evidence of this.

    Short of sending it to the service center,how do I remove this clip?

    Then once the clip is out,is the wristpin threaded internally so it can be pulled out?  If not,how?

    Thanks in advance,,,,,,,,,,,,,,,,,,,,,,,,Dave   NSRCA # 943
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