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Flying Scotsman

New Member

• Nov 12, 2013

• #1

I am currently carrying out a full rebuild on my 200tdi, I took the vacuum pump out without marking it. Now after reading manual, this has to be marked prior to removal, so the cam and skew gear realign when fitting. The cam turns 350 degreas then catches on the bottom of the vaccum pump and jams. Any ideas how to realign the corresponding teeth?

 

jamesmartin

Well-Known Member

• Nov 12, 2013

• #2

Flying Scotsman said:

I am currently carrying out a full rebuild on my 200tdi, I took the vacuum pump out without marking it. Now after reading manual, this has to be marked prior to removal, so the cam and skew gear realign when fitting. The cam turns 350 degreas then catches on the bottom of the vaccum pump and jams. Any ideas how to realign the corresponding teeth?

Click to expand...

you dont need to mark vac pump it , its not timed and neither is skew gear on a 200 tdi , vac pump

 

F

Flying Scotsman

New Member

• Nov 12, 2013

• #3

Why is the cam catching on the bottom of the vacuum pump and locking the cam so that it will not turn?

Cheers

 

jamesmartin

Well-Known Member

• Nov 12, 2013

• #4

vac pump should slot over pin in skew gear , skew gear which just pushes into place ,is cam catching skew gear housing

 

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Flying Scotsman

New Member

• Nov 12, 2013

• #5

Yes it's catching on the bottom of the skew gear housing, where the bearings are

 

jamesmartin

Well-Known Member

• Nov 12, 2013

• #6

Flying Scotsman said:

Yes it's catching on the bottom of the skew gear housing, where the bearings are

Click to expand...

so you pulled that out too,gear timing or vac pump wont matter ,have a look at housing

 

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Flying Scotsman

New Member

• Nov 12, 2013

• #7

I have tried two different skew gears in, both jam, I have also look at the housing to see if there is a shape for the cam to pass

 

jamesmartin

Well-Known Member

• Nov 12, 2013

• #8

cant see where your going wrong whats actually catching where, vac pump doesnt timing though it needs to sit on the deepest slot

 

F

Flying Scotsman

New Member

• Nov 12, 2013

• #9

When I fit the skew gear into the block, the cam turns so far round and then locks and will not turn any further, when I take the skew gear out, the cam freely turns through 360deg. I cannot work out what I am doing wrong.
Cheers

 

jamesmartin

Well-Known Member

• Nov 12, 2013

• #10

does skew gear turn freely once removed ,does pump

 

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Flying Scotsman

New Member

• Nov 12, 2013

• #11

Yes the skew gear spins freely same when he pump is fitted. There is slight movement in the cam, front to back, although the cam still catches.

 

jamesmartin

Well-Known Member

• Nov 12, 2013

• #12

Flying Scotsman said:

Yes the skew gear spins freely same when he pump is fitted. There is slight movement in the cam, front to back, although the cam still catches.

Click to expand...

slight ,should only be a few thou if cam pulley is attached

 

F

Flying Scotsman

New Member

• Nov 12, 2013

• #13

I will venture back to the garage again tomorrow night and have another look, it must pretty obvious what I am doing wrong just can't see it yet. Cheers Graeme

 

F

Flying Scotsman

New Member

• Nov 16, 2013

• #14

Sorted now, the cam shaft had moved right back and someone didn't notice,

Cheers

 

jamesmartin

Well-Known Member

• Nov 16, 2013

• #15

Flying Scotsman said:

Sorted now, the cam shaft had moved right back and someone didn't notice,

Cheers

Click to expand...

cam and skew gear timing as such is only due to lr thinking teeth would have run in together but experience shows its no concern