300tdi cam follower bolts leak?

[mudder110]

howdy all, in my endeavour to trace down a suspected fuel or air leak.
I found that one of the cam follower bolts has a small leak, my question is should I tighten it up or is this the start of a bigger problem?engine has 362,000ks head done at 220,000ks
any advice appreciated cheers all

[Blknight.aus]

remove, clean loctite and reinstall.

if the nose of it is badly damaged thats a sign of bad juju.

if you have the very old schoool tiewire setup you need to loctite all of them or redo the lock wire after replacing.

[mudder110]

remove, clean loctite and reinstall.

if the nose of it is badly damaged thats a sign of bad juju.

if you have the very old schoool tiewire setup you need to loctite all of them or redo the lock wire after replacing.
whats bad juju? and thanks for the info
cheers

[mudder110]

thanks black night, is it ok to just remove clean locktight and replace
what if there is damage? whats my next move and what damage am I ,looking for cheers

[Blknight.aus]

when you remove the locating bolt (dont turn the engine) clean up the threads of any oil and then add your choice of loctite.

you'll know the damage if you see it. and your choices come down to 2

1. ignore it and go again hoping for the best
2. fix it.

the cam follower comes in 3 pieces,
1. the guide "tube"
2. the roller carrier
3. the roller.

the "tube" is retained and aligned by the locating bolt through the block if the bolt falls out or shears then it can rotate in position and bounce up and down which puts the roller out of alignment with the cam and thats when bad juju happens. If the carrier sticks in the tube from wear then the cam and the valve will hammer at them both causing the guide tube to wear on the nose of the locator bolt.

make sure that before you remove any of the locator bolts that you take up the slack on the valve you are removing the bolt for. I usually do this by rolling the crank until the valve I want to work on is just starting to open.