JD 6155 oil filler cap blowboff

[lloyd]

Saw a bit of oil on side of engine panel,opened bonnet
and the engine oil filler cap was mostly missing .
Anyone else had one disintegrate?

 

[4440]

Yes common problem, we have had 3 tractors blow the black caps off. Replaced with the later yellow cap

 

[redsloe]

Yes, became two pieces with the actual cap nestled against the guard and the threaded bit still on the filler pipe. A bit a materiel over it secured it until I replaced it.

 

[kill]

Common problem. They get brittle and the over tightening blows the top off

 

[Will 1594]

?. Easily cured. . Look closely at first three threads on filler cap , They wear or casting not just right .
Jam a piece of rag in filler covered in grease then more grease. , get a hacksaw and take top off filler one leg on timing case , grease catchers filings Then new cap , cures problem .
I had a new cap machined out of a billet of Ali with longer thread.
Other tractor I made a little heat shield for it , so fan not blowing hot air at filler , maybe psychological , but since hacksaw job no more problems .
And break out the floppy bit in top of filler cap so it gets hold of more threads.

 

[Will 1594]

Anti splash device. And filler kneck I cut top off you can see dodgy thread