I have a whine coming from my oil pump now only since the t-belts were replaced I suspect it's bearing related. The Haynes manual tensioning method required 18 ft-lbs applied to the camshaft sprocket bolts in a c-clockwise direction... doesn't this just unthread the bolts??!?

Belt tensioning is not really addressed in the USMB repair manual (timing belt check and replacement).

 

I think I have them too tight now, but how do you get the right tension?

tensioning the timing belts is actually unnecessary. i've never even seen folks ask about it ever, until twice in the past month- odd.

 

i would expect something else is causing the problem. the oil pump doesn't have bearings in it, the shaft just rotates inside the housing/seal. there's no bearing there.

 

are you positive the whine is due to the oil pump?

 

if it is indeed from the oil pump i would guess the outer thin metal ring around the oil pump got bent while you were working on it. it's a very thin lip that extends just a 1/4-1/8" past the sprocket teeth, hardly noticeable unless you look at the pump.

 

that ring can separate and rub against the belt or something else. i would check that first. and also check the timing pulleys, if you didn't repalce those there's a good chance one of those is noisy.

Indeed. No bearings... The whine is the oil pump though, I did the belts the Haynes way and I think they are too tight, felt odd snugging them up... Checked the service records that came with the car, the pulleys were done only 2 years ago. Off to relieve the belts. Thanks.

sounds like a good idea, certainly won't hurt to try it out.

Popped off the inspection caps, loosened then retightened the tensioner bolts one at a time and it appears to have worked for now. Now to debug that EGR code...