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Well I got ahold of a guy that works on these old Cummins. he said the small cam motors are noisy at idle and that mine was idling a bit too low. Basically nothing wrong with. Guess I just never noticed the noise before.

Well, I was talking to one of the mechanics at our fleet where Imwork who is really good with these. He said he would give it a listen but that these motors were noisy at idle because of the gear driven accessory drive and that I may be worrying about nothing. the YouTube is hard to hear but it...

I pulled all the belts except the water pump(which is much more involved). Still here almost like a squeal but sounds better than it did unless I am going tone def from listening to it. Power steering belts are shot. Hard as a rock and cracked. Fan belts not cracked but kinda dry. Alt belts shot...

Other things we checked was crank shaft end play on the motor seemed fine, the clutch fan pulley seemed like it was moving more than it should but we also were using a 3 ft pry bar . The alt bracket is loose as well but noise not coming from there. Gonna address that as well and order up some...

I am a bit confused on what timing the compressor even does on a common rail but that aside so looking at the Tm since you did this already, I clock that scribed line on the compressor shaft to between 9-10 o'clock looking at it ? is there a possibility of me screwing this up by a tooth ?

Oh, I got ya. Yeah gonna try that first ...but I know my luck. It won't be a simple fix. this truck is supposed to haul a bunch of Marines for a fundraiser in a few weeks and I have no choice but to figure it out it needs and fix it. I am praying something catastrophic is not coming apart...

That is a great vid but could you detail the timing a bit more ? I'm gonna try to download the tm but it's hard to navigate on my tablet. didn't understand 1-6 thing ?

Compressor is driven off a gear in the timing case.The CP is driven through the compressor on these so no belt.

It does seem to me that the engine vibrates more that it did. Would I have to re time anything to pull that ? Can I yank the compressor with the Cp pump ? i got a bad feeling you are right. it seems to vibrate like an 8.3 Cummins. is this a common failure ? i have a junk 250 from an 818 but the...

Came back from Sussex to this noise. I know YouTube is hard to hear. Sounds like coming from front of motor. Seems to get better if you increase RPMs. At first is sounds like a noisy air compressor running but the air pressure was up and compressor off. i know this is gonna be another "never...