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Play in the Intermediate Shaft
by
absenth
on 26 May, 2017 10:40
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I have a 1.6L Diesel.
I removed my IS Pulley to gain access to bolts on my water pump.
The IS shaft has a bit of play when pushed in/out, maybe 1/4". Is this normal?
Thanks.
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#1
by
RabbitJockey
on 26 May, 2017 14:34
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no
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#2
by
absenth
on 26 May, 2017 15:07
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Didn't think so.
I'm guessing it caused this:
.
Any idea on what is most likely causing the movement? Bearings need replaced? Any thing else I can check prior to pulling the engine?
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#3
by
libbydiesel
on 26 May, 2017 19:25
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Probably the extra thrust movement wasn't the cause of the broken piece from the pulley, but it is definitely not right. I'd say most likely is the thrust ring on the intermediate shaft has broken off. Really easy to check. Remove the pulley and remove the two bolts that hold on the seal carrier.
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#4
by
absenth
on 28 May, 2017 22:39
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Probably the extra thrust movement wasn't the cause of the broken piece from the pulley, but it is definitely not right. I'd say most likely is the thrust ring on the intermediate shaft has broken off. Really easy to check. Remove the pulley and remove the two bolts that hold on the seal carrier.
Thank you. Is this the thrust ring?
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#5
by
libbydiesel
on 29 May, 2017 17:41
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Yes, indeed. You need a replacement intermediate shaft. You might also want to check that your oil pump and vac pump both rotate properly and are not damaged. Most often the thrust ring breaks because something prevents one or the other from rotating properly and the shaft gear works like a screw putting excessive force on the thrust ring.
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#6
by
absenth
on 29 May, 2017 22:43
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Understood. Thank you for your time.
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#7
by
fatmobile
on 31 May, 2017 23:48
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Hey, was the belt riding off the end of the I-shaft pully?
Off center?
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#8
by
absenth
on 01 Jun, 2017 08:50
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Hey, was the belt riding off the end of the I-shaft pully?
Off center?
I can't say. I haven't had the engine running.
The belt looks to be newer with no visable rubbing marks or cuts. But it may have been installed but never actually ran.
I was going through the steps to do the timing.
While turning the engine over by hand I became a little suspicious of what else may be wrong. Maybe I'm being unnecessarily pessimistic. But you can read my concerns here:
http://volkswagenownersclub.com/vw/showthread.php/108257-Binding-while-turning-diesel-engine-over-by-hand.
I think pulling the engine and removing the head to inspect while I plan to replace the IS would be the sensible thing to do. All advice is welcome and would be appreciated.
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#9
by
libbydiesel
on 01 Jun, 2017 10:55
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I only skimmed that thread. It sounds like the difficulty in turning and the breaking of the thrust ring on the int shaft could be from the same issue. My recommendation is the same as before. Pull the vac pump and make sure it spins easily. Put a socket on the oil pump shaft (careful not to drop it in the sump) and spin the oil pump to make sure it spins easily.
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#10
by
absenth
on 01 Jun, 2017 12:17
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I only skimmed that thread. It sounds like the difficulty in turning and the breaking of the thrust ring on the int shaft could be from the same issue. My recommendation is the same as before. Pull the vac pump and make sure it spins easily. Put a socket on the oil pump shaft (careful not to drop it in the sump) and spin the oil pump to make sure it spins easily.
Ok. Will do. Thanks.
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#11
by
ORCoaster
on 01 Jun, 2017 16:16
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Libby is suggesting pulling the two parts that are driven by the IS itself. The gear on the back of the IS indirectly spins the oil pump which is two gears that squeeze it up and out to the rest of the engine. The Vac pump IS the ACTUAL driver of both parts and may also be a gear driven device if you have the upgraded on. But it's shaft fits on top of the oil pump and if either is jammed up for some reason the IS will not turn freely.
Taking them out one at a time and testing is done easily If you remove the timing belt spinning the oil pump should show up as a turning IS shaft so be aware of that. The vacuum pump can be turned by hand once it is out of the engine.
Good luck on this.
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#12
by
absenth
on 02 Jun, 2017 12:10
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Libby is suggesting pulling the two parts that are driven by the IS itself. The gear on the back spins the oil pump which is two gears that squeeze it up and out to the rest of the engine. The Vac pump may also be a gear driven device if you have the upgraded on. But it's shaft fits on top of the oil pump and if either is jammed up for some reason the IS will not turn freely.
Taking them out one at a time and testing is done easily If you remove the timing belt spinning the oil pump should show up as a turning IS shaft so be aware of that. The vacuum pump can be turned by hand once it is out of the engine.
Good luck on this.
Thanks for the details. Much appreciated.
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#13
by
vanbcguy
on 02 Jun, 2017 13:04
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If we want to be picky the intermediate shaft drives the vacuum pump. The oil pump has a slotted shaft that fits in to the bottom of the vacuum pump.
Libby's advice holds however - if either pump is not turning freely it can cause the problems you're experiencing.
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#14
by
ORCoaster
on 02 Jun, 2017 23:11
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There you go, I modified it a bit to make is read as it works. IS drives Vac pump and that drives the Oil Pump. Thanks for keeping us from spreading so so information. We don't want to be picky, we want to be clear and correct.
Correct?