Push rod alignment

[jetjr]

Ive got a new reco solid lifter 6 cyl, running nicely.

 

Just doing valve adjustments for 10hr, all pretty good, just some a tiny bit tight.

 

Number 6 was a seemed tight so loosened adjuster and it wouldnt loosen clearance, I then see push rod is sitting out side adjuster, ie not in the socket like it should be.

 

I gave it a push and it snapped back into place, inspected it all smooth and nice, adjuster not damaged.

 

I had adjusted them at zero hours and 5 hrs and all OK then.

 

Whats going on?

 

 

[jetboy]

Stuck valves can allow this to happen. Really bad case the pushrod becomes jammed beside the rocker.

 

Sorry I dont know the recommended fix, just observed this happened to an engine that had been extensively overhauled at the factory a year prior, and it took 1 LAME workshop fix, 1 motorcycle workshop fix, 1 fix by the owner to reach a reliable outcome. I think it involved cleaning the valvestems and reaming the guides.

 

Ralph

 

 

[Bruce Tuncks]

Yep Ralph is right, you had a valve which stayed at least partly open for a time. The pushrod is held in the socket because of the force from the valve-spring. Maybe the clearance between the guide and the valve-spring was on the tight side, maybe the spring is weak. You will need to remove that head and get that valve and guide redone.

 

Bruce

 

 

[facthunter]

Agree with the above. Most likely a momentary grabbing of the valve in the guide. remove head, check finsh and size ot the valve stem, replace if "Galled"/ worn and establish the correct clearance in the guide.If the wear is very much to one side check valve geometry, At the 1/2 lift position the valve axis should be at right angles to a line from the rocker contact face to the centre of the rocker shaft. Check push rod for straightness also. Nev