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Case Tractors Discussion Forum
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Identifying 188 diesel block

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BKahler

03-22-2005 18:36:59




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I'm in the process of rebuilding my 188 diesel engine and have run into a few problems. A friend of mine dismantled the engine and didn't pay attention to where the hollow bolt for the rocker shafter oiler was located. What makes it even more confusing is I have two of these hollow bolts. Both came from the rocker train.

The other problem is knowing how many holes should be open in the rear cam bearing. The engine ID tag had previously been removed from the block which is what is used in the manual (Thanks George!) for identifying cam bearings and hollow bolts.

So, how do I go about sorting this mess out?

What makes matters worse, I think the machine shop installed the front cam bearing wrong as only one oiler hole is open to the oil passage. The manual seems a little ambiguous on this issue.

Oh yeah, this engine has the small flange liners if this helps any.

Any help here would be greatly appreciated.

Brad

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Tom (Ks)

03-23-2005 19:07:01




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 Re: Identifying 188 diesel block in reply to BKahler, 03-22-2005 18:36:59  
The diesel engine has two holes to line up in the block. The 1 7/32 wide bushing must be installed with the chamfered edge into the block to a specified depth. The two holes should line up when the bushing is installed to a depth of 5/16 inch. This is the rear bushing. The front bushing is pressed 1/32 inch below the front face of block. My manual shows only one hole for the front bushing.



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BKahler

03-23-2005 19:23:05




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 Re: Identifying 188 diesel block in reply to Tom (Ks), 03-23-2005 19:07:01  
Tom,

Thanks for the info. I finally managed to solve the problem this afternoon after talking with George Miller. There is a change point on the 188 diesel engines where the oil to the rocker train switched from the center pedistal to the rear pedistal. The early engines had the oil feed go through a hole on the right side top center of the block and the later engines were fed from the rear camshaft bearing.

Once we figured out my block didn't have the rear oil hole up to the head it became a no brainer that mine fed from the center.

What this means is on the early blocks the front and rear cam bearings each only had one oil feed hole where the later blocks had an extra hole in the rear cam bearing.

Brad

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Tom (Ks)

03-24-2005 18:22:17




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 Re: Identifying 188 diesel block in reply to BKahler, 03-23-2005 19:23:05  
The manual I have is for the later 30 series, does your engine have the old injectors that go into the head from the sides or the pencils that go in from the top?



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BKahler

03-24-2005 19:14:40




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 Re: Identifying 188 diesel block in reply to Tom (Ks), 03-24-2005 18:22:17  
Mine go in from the side. The injectors are something else I have to have rebuilt.

Brad



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Tom (Ks)

03-24-2005 19:51:27




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 Re: Identifying 188 diesel block in reply to BKahler, 03-24-2005 19:14:40  
I also have an old I&T book that states that engines below SN2072089 has only one hole (rear cam bearing) to align for the oil. My Case manual has a misprint on the SN break for the CAV injectors that you have. It list it at SN2718490 but my engine is 2648995 and it has Roosa Masters in it.



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