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  #1  
Old 03-17-2019, 06:18 PM
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M130 Timing chain gear removal help

I'm rebuilding my M130 engine and need to know how to remove the drive chain gear from the block.
Have removed the forward access plate (4 - 10mm bolts w/plate) and removed the 13mm gear bolt from the shaft (with 2 washers)... before ???

How is this gear and shaft removed?

I started a restoration thread under Restoration projects and Long Term Builds: 1971 250/8 Restoration Project

Appreciate the help!
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M130 Timing chain gear removal help-gear.png  
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  #2  
Old 03-17-2019, 07:04 PM
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I've never messed much with the M130 but on the M110 and the M115 the cam/s come out the rear. Probably the same for the M130.

You really need to get the shop manual for your engine. It'll save you a bunch of time and ensure you do things correctly.
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Old 03-17-2019, 07:22 PM
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Quote:
Originally Posted by Mike D View Post
I've never messed much with the M130 but on the M110 and the M115 the cam/s come out the rear. Probably the same for the M130.

You really need to get the shop manual for your engine. It'll save you a bunch of time and ensure you do things correctly.
Thanks Mike. I have the less expensive Haynes manual (which is limited in detail but has the important stuff)

This shaft also turns the distributor, the nut to remove the shaft is behind the gear... but the gear has to come off first, and it won't budge. I don't want to force leverage it off and damage it.. it shouldn't be that hard, it's not pressed on (I don't think!)

Here is a picture of the front access port showing the shaft. Not much room to slide the gear forward.

Any other ideas?
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M130 Timing chain gear removal help-front-view.jpg  
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  #4  
Old 03-17-2019, 08:22 PM
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Maybe it's me but it looks as though someone has peened the shaft to make it tight. Might just be the way the M130 cam is assembled, as I said, I am not familiar with the engine.

Frank R. would be the guy to ask.

You might try a good soaking of a knocker-loose product, slip a couple of wooden wedges between the gear and housing, re-install the cam holding bolt and washer, back the bolt out a couple of threads, use a wooden dowel as a drift and give the head of the bolt a few gentle taps with a hammer. Worth a shot.
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Old 03-17-2019, 08:48 PM
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Location: Modesto CA
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Quote:
Originally Posted by 1971 250/8 View Post
I'm rebuilding my M130 engine and need to know how to remove the drive chain gear from the block.
Have removed the forward access plate (4 - 10mm bolts w/plate) and removed the 13mm gear bolt from the shaft (with 2 washers)... before ???

How is this gear and shaft removed?

I started a restoration thread under Restoration projects and Long Term Builds: 1971 250/8 Restoration Project

Appreciate the help!

On the left side of the block, at the height of the intermediate gear and its shaft, and slightly behind the plane of the gear, is a lock bolt. That bolt has a dog point that engages a groove in a bushing in which the shaft runs.
The distributor drive shaft is driven by the intermediate shaft. The dist shaft should have threads in its upper end for an extractor bolt.
1) pull dist shaft out of block
2) remove intermediate shaft lock bolt
3) pry inter gear and shaft forward as far as possible
4) put wood or plastic wedges behind inter gear
5) knock inter shaft back into block so that it is clear of gear
6) catch gear as it flies up out of the cavity
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Old 03-17-2019, 09:26 PM
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There ya go! I knew Frank would be the man to ask!
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  #7  
Old 03-17-2019, 09:41 PM
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Quote:
Originally Posted by Frank Reiner View Post
On the left side of the block, at the height of the intermediate gear and its shaft, and slightly behind the plane of the gear, is a lock bolt. That bolt has a dog point that engages a groove in a bushing in which the shaft runs.
The distributor drive shaft is driven by the intermediate shaft. The dist shaft should have threads in its upper end for an extractor bolt.
1) pull dist shaft out of block
2) remove intermediate shaft lock bolt
3) pry inter gear and shaft forward as far as possible
4) put wood or plastic wedges behind inter gear
5) knock inter shaft back into block so that it is clear of gear
6) catch gear as it flies up out of the cavity
That did it! On step 5) I used a wood dowel to gently tap the shaft rearward slowly... worked like a champ. Thanks Frank. This site is beyond great.
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  #8  
Old 03-17-2019, 09:45 PM
"One with my 71"
 
Join Date: May 2017
Location: In a house
Posts: 986
MEGA THANKS GUYS

Quote:
Originally Posted by Mike D View Post
There ya go! I knew Frank would be the man to ask!
Gotta say, I've been reading through a lot of threads here and other sites (Peach Parts, Pelican Parts, Benz World... am I missing any?) and I have seen a lot of info posted by Mike D and Frank. You guys are PROS. Thanks for what you do and the advice you give.



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