0

How do I install a new piston with 21 loose needle bearings around the wrist pin in the little end of the connecting rod? I have tried to install the wrist pin but the needle bearings keep falling out.

Improve this question

1 Answer 1

Reset to default
3

A light weight grease can be useful to keep the needle bearings in place while completing the assembly. It will provide lubrication and eventually be worn or be washed away by the normal lubrication system.

Improve this answer
3
  • Would assume this is a 2-stroke engine which uses the oil in the gas mixture to lubricate things. I agree with your methodry, but would suggest using petroleum jelly as the light weight grease.
    – Pᴀᴜʟsᴛᴇʀ2 ♦
    Nov 5, 2022 at 1:05
  • 2
    Another possibility is assembly lube. Some brands are relatively "sticky" and work well for this sort of thing. Assembly lube is also formulated so that it eventually gets dissolved and washed away by engine oil.
    – jwh20
    Nov 5, 2022 at 1:43
  • +1 for engine assembly lube. The exact tool for this job - does a very good job of sticking things where they need to be and then shears very easily when used
    – Brydon Gibson
    Nov 7, 2022 at 18:28

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .