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Need some help with a Gard'n Mast'r Jr. Flywheel pulley removal.


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#1 classic ONLINE  

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Posted April 01, 2015 - 04:17 PM

I'm not exactly sure how the pulley/crank start hub is held onto engine crankshaft. There is a set screw in the belt groove of the pulley and the pulley is also threaded on the inside. I don't know if the pulley is threaded onto the crankshaft, or if it just slides on over the flywheel nut and the set screw holds it in place.
This tractor sat idle for many years due to no spark, and I would like to remove the flywheel so I can replace the coil. Any help would be appreciated.

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#2 jabelman OFFLINE  

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Posted April 01, 2015 - 04:22 PM

Start soakin!
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#3 classic ONLINE  

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Posted April 01, 2015 - 04:36 PM

It's been soaking for a couple of days now. The set screw is out, and I can get a three jaw puller on the pulley, but does the pulley slip on the crankshaft, or is it threaded on? I don't want to yarn down on the pulley with the puller if the pulley is threaded onto the crankshaft.

Edited by classic, April 01, 2015 - 06:53 PM.

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#4 propane1 ONLINE  

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Posted April 01, 2015 - 05:16 PM

How would you hold the crank if it is threaded on ? More soaking. What is on the other end of the crank to hold on to if you have to turn it. Just some thoughts, Noel
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#5 petrj6 ONLINE  

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Posted April 01, 2015 - 05:16 PM

  Can you get a schematic of the engine ?  that may show you.  I mean like a parts diagram blowup.  I would guess as there doesn't seem to be away to hold that pulley that it is slid over the crank then the set screw holds it in place with a key then the flywheel is on a tapered shaft same as always.  is that a briggs ?  I have really nice puller made up for briggs engines I would be happy to send you to get that of, I had to make it when I pulled a 23d apart that the flywheel absolutely would not come of !!!

                                 Pete

 

 

PS don't go on my word alone !!! I would hate to see that wrecked on something I said.


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#6 classic ONLINE  

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Posted April 01, 2015 - 05:29 PM

This is a Briggs model 23 R6D with gear reduction. It will have a magnamatic ignition behind the flywheel, and there is no magnet or key way cut in the flywheel. The crankshaft will not be cut for a key either on this engine. I'm guessing that the flywheel nut is shrouded by the pulley and cannot be seen until the pulley is removed.

Edited by classic, April 01, 2015 - 05:30 PM.


#7 classic ONLINE  

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Posted April 01, 2015 - 07:12 PM

My plan so far is to attach the three jaw puller to the pulley and put some pressure on it. I'll then heat up the pulley with a map gas torch and see if it pops off. I can't wait to get this engine running, but it looks like the tractor will only go straight no matter how hard you cut the wheel, HA!

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#8 LilysDad ONLINE  

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Posted April 01, 2015 - 07:38 PM

 I can't wait to get this engine running, but it looks like the tractor will only go straight no matter how hard you cut the wheel, HA!

Things were built different before OSHA.


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#9 propane1 ONLINE  

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Posted April 01, 2015 - 08:20 PM

When you get some pressure on it, some how give it some light taps with a hammer while you have heat on it. It may jar it loose. Noel.
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#10 classic ONLINE  

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Posted April 01, 2015 - 08:37 PM

Thanks Noel, I have a nice copper mallet that I picked up at a yard sale. It has come in handy many times and doesn't destroy what your using it on. The pulley is cast, so I have to have patients with it.
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#11 chris m OFFLINE  

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Posted April 01, 2015 - 11:26 PM

From what I see I don't think the pulley will be threaded on the crank. I would emery the heck out of the shaft exposed, soak with PB Blaster and the do like you said, put on a puller give a little heat then give the end of the puller a rap with the hammer to see if she pops.

 

Good luck!


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#12 Alc OFFLINE  

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Posted April 02, 2015 - 05:22 AM

 

From what I see I don't think the pulley will be threaded on the crank

Chris , if the pulley was just held on by the setscrew what's holding the flywheel tight ? It's really different , can't wait till it comes off to see how it was designed


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#13 chieffan ONLINE  

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Posted April 02, 2015 - 07:01 AM

I checked the antique engine manuals for Briggs and they don't list a 23R6D as a model number.  They do have a 23D-R6 operators manual but no parts break down that I could find.

 

If your going to put a puller on that pulley be sure you get on the back side and not the thin front flange or you will have a one flange pulley.

 

http://www.briggsand...tions#5Sto23DR6


Edited by chieffan, April 02, 2015 - 07:02 AM.

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#14 classic ONLINE  

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Posted April 02, 2015 - 07:44 AM

Here is the tag on the engine. The model 23 gear reduction models were, model 23R6D, 23A-R6D, 23C-R6D,and 23D-R6D.

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Edited by classic, April 02, 2015 - 07:57 AM.

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#15 classic ONLINE  

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Posted April 02, 2015 - 09:07 AM

Well, I got it apart. The puller was definitely not going to work with the way this is set up. The part that the hand crank engages is threaded on the inside and needs to be removed after removing the pulley set screw. That was interesting!
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