Hello I’m stuck on another project with my hunter 34. One of the decompression levers on the valve cover snapped the bolt/ cam shaft holding it in place in the cover. I purchased a new shaft, o rings , lever and nut from Yanmar. It snapped off at the edge of the cover on the outside, how do I get the old shaft out or where could I find a used cover!! Dilemma is the motor seized and I was able to get 30degree movement on the crankshaft. Long patience and determination to get here! Thank you for all help here
Yanmar 3gm30 engine
- Thread starter hunter healer
- Start date
As you already know the shaft goes through in a horizontal bore. On the top of the cover - just behind the horizontal bore - you will find a pin set flush with the surface of the cover. The pin may be covered in paint - if so scrape the paint away to expose the end of the pin. Gently drive the pin out. Once the pin is out the shaft will slide out. Use a slim punch or a nail (point cut off) as your driver and be sure to back up the bonnet with a socket so you do not break anything else.
If you are not used to this kind of work - and since you are clearly in for a complete disassembly anyway - consider having the machine shop show you how to do this.
Charles
If you are not used to this kind of work - and since you are clearly in for a complete disassembly anyway - consider having the machine shop show you how to do this.
Charles
Thank you! I will look at it later today and proceed with caution! I appreciate your help, Christian
Page 101 here: https://sbo.sailboatowners.com/downloads/Hunter_gen_25628785.pdf
part #14 is the pin..
part #14 is the pin..