Thread: Timing chain jockey pulley?

Hiyas

Before I drive, drill out the timing chain jockey pulley/idler shaft lube holes drilling blank to check for blockage from the hyd tensioner to the sprocket shaft, some extra knowledge is required.

I can't ascertain where the oil pressure for the idler shaft comes from. I seem to have carbon or steel between the tensioner ball and the idler shaft and the idler. Which is correct a hole (full of carbon) or steel? If steel where does the oil for the idler shaft come from?

It would seem that the idler shaft should be lubricated from ratchet pawl shaft and the hydraulic tensioner and the drilling to my shaft is blocked???

Ummm! advice would be gratefully accepted.

Cheers

Rick F

Lubrication of the timing chain adjuster and idler wheel. Early 2ltr.

For Reference:

Oil is delivered internally through 365 from the block to to 363, provides pressure for the hyd tensioner and then lubrication for the rotating chainwheel. The oil galleries on the chainwheel spindle are supplied from an annulus connected to the drillings through 363.

PN 212365 - pivot pin for chain adjuster arm (365)
PN 212364 - Spindle for timing chain adjuster idler wheel (364)
PN 212363 - Adjuster arm for timng chain (363)

364 is pressed into 363. (A 10 ton press comes in handy); and retained with a 3/16" probably taper pin, [drill out] (not so tapered any more for me)

In my case all the drillings in the adjuster arm, the spindle and the annulus were full of hard carbon that I hadn't been able to shift until the whole lot was separated.


Mr. Moderator
Can you file somewhere as "Knowledge"

Cheers

RF