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Best Way to Remove a Timing Gear - 1934 Series 50


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I have a 1934 Series 50 with a knocking noise coming from the front timing gear area.  The noise is in time with the camshaft.  The engine is in the car now and I know I have to remove the hood and front end, generator, water pump, radiator, front motor mount, timing cover and pan to gain access. 


My question is, what is the best procedure to remove the existing fiber timing gear?  Do I need to use a puller, if so, what kind is necessary?  I do have an aluminum timing gear to replace the existing one.  What torque I should use on the new one?


I think this procedure may be similar for 1931-35 Buick engines.  Any help would be most appreciated before I begin! 



aluminum gear.jpg

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 I was hoping someone who has this year engine would chime in.

I changed the fiber gears on both my 1925 Master and Standard. I am sure that there is a specific puller for these as there should be for mine.

 I used a universal type puller and was able to use the split bearing attachment on the outer flange.

DSCF7665.thumb.JPG.48183be4c5435ee1aeebf7a9129e2d94.JPG   DSCF7666.thumb.JPG.3c21c013cd8bf92a155d084e69cb7316.JPG

Master gear being pulled.                          My original gears have a metal hub.

 DSCF8135.thumb.JPG.cdea0ea29ec30bbaba79ba086af04665.JPG   DSCF8143.thumb.JPG.4e8a7f6e818a79eac89e0909ee1de57a.JPG

Standard Gear being pulled.    The new replacements are solid fiber. No steel hub.

 I had to machine a washer to make up for the missing steel components to get the gears parallel in tracking.

What is needed is a puller to have the 2 legs get behind the puller at the hub through the holes in the center cross section. When trying to pull as I had to the split collar does put extra pressure at the point of pull at the shoulder. Compressing the hub bore a bit making it harder to remove. It was a tough pull.

Hope someone else can help.

Edited by dibarlaw
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When I need to remove the timing gear on my 1929 I find it easier to pull the complete camshaft and gear out. It does mean taking off rocker shaft and pushrods / cam followers.   Then it's easy to press the gear off and press new one on. It takes "maybe" a bit longer and might have to cut a new gasket.   But I don't know if the 1934 engine has a similar setup.

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Not sure when the switch was made on the oil pump drive, but in 1932 the oil pump would need to be removed before pulling the camshaft.  I removed one gear on a 32 engine by drilling two 13/32 holes near two large holes.  I put a 3/8 course thread bolt through the holes and slid a thick washer and then a 3/8 nut and then proceeded to use the bolts as jack screws against the block.  


Bob Engle



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Thank you dibarlaw, Rooster and Robert Engle for your helpful responses!  I do think I'll try Robert's removal procedure.  By the way, the oil pump on the '34 is driven by the camshaft.  I think that may be common from 1931 - 35.  The distributor and water pump are driven by the generator gear.  I don't want to remove the camshaft if I don't have to.


Thank you for all responding,  Nevadavic

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I am sure that there is a Buick specific puller for this gear. I marvel at Robert's ingenuity with the 3/8 bolts in such a manner! I did a similar expedient to remove the starter drive gear shaft on my 1925 Master.


Making a short bolt /nut arrangement to press out the shaft against the starter generator.

This was so I did not have to remove the water pump and starter generator.  It took several hours to remove the shaft. Backing off the nut, adding a washer pushing another 1/16". Repeat. All this only to find out that the starter gear would not come out of the case with the starter pinion gear in place. So I should have removed the S/G anyway. Without the S/G in the way, several solid taps with a sized punch would have knocked out the gear shaft.


I had to make a slight modification to the aluminum trunnion case. 


Just enough room to remove the damaged gear.



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