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Remove Crankshaft Timing gear with Crank Installed

Started by _73LJWhiteSL_ , Dec 22 2007 06:01 PM

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16 replies to this topic

#1 _73LJWhiteSL_

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Posted 22 December 2007 - 06:01 PM

gday all,

dad and myself are having heaps of trouble with this.

Has anyone ever removed the crank timing gear with it still istalled in the engine? Or does this need to be done on a press?

The puller has not budged the timing gear one bit. Its not moving at all. :furious:

Steve

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#2 rodomo

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Posted 22 December 2007 - 06:10 PM

Drill holes close to the crank to almost the full depth of the gear.
Drill them opposite to the puller holes.
5/16" or 3/8" drill.
This will relieve the gear and it will be easier to remove.
Drill 4 holes if you have to.
If that fails, angle grinder.

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#3 rodomo

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Posted 22 December 2007 - 06:31 PM

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#4 _73LJWhiteSL_

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Posted 22 December 2007 - 06:35 PM

Thanks Rodomo, we will give it a go. :spoton:

Steve

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#5 _gtrtorana_

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Posted 22 December 2007 - 07:07 PM

I had to remove a std crank gear off a crank in the past and used a $20 2 legged pully puchased from Supercheap. Done the job perfectly. Can be used with engine in car.

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#6 rodomo

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Posted 22 December 2007 - 07:15 PM

Yep, some come off easy and some aree real bastards.
I had to drill the harmonic balancer off the Commodore.
Broke a puller trying.

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#7 _73LJWhiteSL_

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Posted 22 December 2007 - 07:34 PM

GOT THE BASTARD! :rockon:

Thanks heaps Rodomo.

We swiss cheesed it. Drilled holes in a line basicaly straight through the thing, trying to split it in two, then pulled it off with the puller.

Now, how hot do i heat the replacement bastard? :fool:

Steve

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#8 _gtrtorana_

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Posted 22 December 2007 - 07:44 PM

First make sure you have a suitable drift that you can use to hit gear on while being able to go over snout of crank with out fouling. I used a piece of metal tubing with a metal plate welded on end. I only needed 5 odd mins with gear on top of wood fire to be able to push gear on with no trouble at all. Make sure you place some grease or oil on crank before putting new crank gear on.

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#9 FastEHHolden

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Posted 22 December 2007 - 08:00 PM

I do mine in hot oil on a gas burner..but you can heat the gear under the grill or in the oven.

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#10 _ezy_09s_

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Posted 22 December 2007 - 08:48 PM

You can do it several ways..either place it in a sink of water as hot as the hot water tap will allow & let it sit for 5 minutes or so..or you can leave the pulley in the sun on a warm day for a while until it feels fairly warm to handle,that is all the heat necessary to expand it a few thou to go on easily.
cheers
Ben

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#11 _munro_

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Posted 23 December 2007 - 12:26 AM

and if you want it to go on really easy use some freeze spray on the end of the crank as well as heating the cog :spoton:

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#12 _73LJWhiteSL_

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Posted 23 December 2007 - 02:25 PM

Thanks for the tips guys.

We boiled the kettle then stuck the gear in a saucepan and poored the boiling water over it. We did this about 3 times.

Then we sprayed INOX on the end of the crank shaft. We tipped the water out, stuck the gear on and belted it home. Easy. :spoton:

Thanks again guys.

Steve

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#13 rodomo

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Posted 24 December 2007 - 01:14 AM

Result?

Vrooom Vrooom? :huh:

Edited by rodomo, 24 December 2007 - 01:14 AM.

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#14 _73LJWhiteSL_

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Posted 24 December 2007 - 07:51 AM

Not yet... working from Home today.

Dad took the saddles to work last nite and milled 1.1mm (+/- 0.05) off the tubes on the bottom. All that i need to do is bolt the side covers on, drop dizzy in, bolt coil back on, stick rocker cover back on and fill it with oil. Then we can run the lifters and cam in.

Hopefully all should be well. :spoton:

Steve

Edited by 73LJWhiteSL, 24 December 2007 - 07:54 AM.

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#15 Heath

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Name:Heath
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Posted 24 December 2007 - 10:52 AM

Sounds good Steve. I thought the first projected engine-finishing time was a bit too ambitious but but I knew you'd get it sorted pretty quickly in the end. Good work