WoodyO

Well-Known Member

• Feb 6, 2025

• #1

Evening all,

I've recently pulled the camshaft on an 200 tdi with unknown history ready to rebuild and go into my Series 3.

Camshaft bearings are showing a lot of scoring so will likely need replacing, the camshaft itself seems okay generally but has a flat spot on the journal nearest the pulley.

It almost looks machined but I cannot see why it would be. Has anyone seen this before?

Please also see photos of the camshaft bearings. I am to replace these with turners pre-finished bearings. Unsure whether to attempt DIY fitting with a press or just take it to a machine shop.

Also, if I change the camshaft, will I get away with keeping the original oil pump spindle?

Thanks

 

Attachments

• 
  20250206_142538.jpg

  251.2 KB · Views: 39
• 
  20250206_142529.jpg

  270.6 KB · Views: 37
• 
  20250206_142558.jpg

  200.3 KB · Views: 48
• 
  20250206_142603.jpg

  175.7 KB · Views: 37

Last edited: Feb 6, 2025

L

lynall

Well-Known Member

Full Member

• Feb 6, 2025

• #2

I reckon them bearings are just about done, quite a common fail on older 200 motors, when really bad they can move and cause low oil pressure.
From memory I think that flat on the cam is normal, when you order the bearings from Turners maybe ask them?

 

WoodyO

Well-Known Member

• Feb 6, 2025

• #3

Thanks for the reply, I did some more reading since making this post and agree it seems normal. A few others have mentioned it online, but I'll check with Turners.

What started off as a quick check over and timing belt is now a full rebuild...

 

WoodyO

Well-Known Member

• Feb 6, 2025

• #4

Will order a set of bearings from Turners over the weekend, along with a camshaft bearing tool from eBay.

I'll update how it goes, as an alternative to getting them done at a machine shop.

 

steve2286w

Well-Known Member

• Feb 6, 2025

• #5

The flat pumps oil up to the rocker shaft.

 

WoodyO

Well-Known Member

• Feb 12, 2025

• #6

Tool arrived today, whipped the old bearings out very easily. Turner pre-finished bearings ready to go in once the cylinders are sorted.

 

WoodyO

Well-Known Member

• Monday at 22:03

• #7

So it turns out installing new cam bearings is a bit of a pain.

Took a while to get each bearings lined up with the oil port in the block, taking a few attempts with a couple of the bearings which didn't help the finish.

Bearing no.3 now had a ridge where the split/gap is on the bearing.

Bearing no.4 curled in on itself when it didn't go in perfectly square, so I downed tools at that point.

Will have to order another set of bearings from Turners and put those down to a lesson learned.

Tool works great though, no complaints there, just the process.

 

steve2286w

Well-Known Member

• Monday at 22:15

• #8

Oh feck
Guess you seen the u tube vids

 

WoodyO

Well-Known Member

• Monday at 22:42

• #9

No... I hadn't seen that!

Thanks Steve, that's helped a lot. The most frustrating bit was using the Turner split bearings, as you couldn't tighten the tool without opening the bearing up too much to fit in the opening, then you also had the ridge when fitted.

So I'll use the suggestion from the video and go for Glyco N165/4 as they're a one piece bearing, no split, and he still slides the camshaft straight in without line boring...

Fingers crossed!

Link for reference

Pardon our interruption...

 

WoodyO

Well-Known Member

• Thursday at 19:08

• #10

New bushes arrived today, much easier to fit, straight in and easily aligned.

However, bearing no. 1 is a little stiff to turn, tried shifting it back and forward a couple of times in case it was misaligned but didn't help.

Tempted to carry on with the build and hope it beds in slightly...

Not sure I can deal with buying a 3rd set of bearings.

 

WoodyO

Well-Known Member

• Yesterday at 17:13

• #11

Wasn't quite happy with putting it back together knowing the cam was stiffer than it should be.

Took a razor blade to the shiney spots on the cam bearing and gently reamed it down, took a few attempts but now turns freely with only a small amount of bearing removed.

Core plugs back in and crank in, rebuild continues...