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45 year old JD 47" Mower Recondition.

mower rebuild

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#1 My3kidsfather ONLINE  

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Posted September 14, 2017 - 10:09 PM

So following the purchase of my first tractor I have begun the recon with the mower first. It's a 45 year old mower sold originally with a model 112 in fair condition. Much info on the subject is available here on the forum and I read most of it first.

Others have had trouble pushing out the main pulley shaft- we heated it up and fortunately it came out clean with some persuasion. The mower deck looked strong until we took off the main spindle- the deck was rusted badly under the main pulley. Not sure what we can do about it, the steel plate welded to the underside of the deck as a support and stiffener is still robust and without rot so we will clean it up as best we can and use the rust converter on it to minimize further rusting. The main spindle was seized so we ordered a new one and new bearings for the blade spindles.

Surface rust was everywhere on the deck. So we have been experimenting with newer tools to remove the rust as much as possible before using the gel chemical remover we found. All the parts removed for recon have been soaking in vinegar with some success. We found a simple solution to the remaining rust in a chemical converter which leaves the rust converted to a black metal that will resist rusting further.

New parts are expensive so any parts that can be reconditioned are being re-used as much as possible. Two new to us tools are proving helpful, one is a 6" Porter-Cable oscillating sander and the other is a Mikita 5" grinder fitted with a robust sanding disk. Both are quicker than my other attempts at sanding/grinding rust and make short work of the job. More and finer sanding to follow for painting.

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Edited by My3kidsfather, September 15, 2017 - 11:21 PM.

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#2 propane1 ONLINE  

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Posted September 15, 2017 - 03:57 PM

Looks like the same deck for my 1970 JD 140 H3.  Looks good so far on your repair. It will last another 45. 

 

Noel


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#3 Leonard VanCamp ONLINE  

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Posted September 15, 2017 - 09:24 PM

Thats a 46" deck, used on JD 110, 112 and all the 200 series. It's a early 2 wheel deck, JD came out with a later 4 wheel deck. 


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#4 My3kidsfather ONLINE  

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Posted September 15, 2017 - 11:19 PM

I see it has two wheels and rollers. Not the best setup? Bounces around too much?

I have found a bit of damage since beginning the sanding, some liquid metal is called for ala Larrybl and Hulk II. :). We are not trying to make a show tractor lIke one of Larry's tractors here, just a nice working tractor recon, so the finished job won't have the polish I have seen elsewhere.

A question: after you are pretty much finished sanding, what do you do to ready the deck and parts for primer, use varsol and a rag to wipe it down? Or other?

#5 My3kidsfather ONLINE  

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Posted September 16, 2017 - 10:17 AM

Thats a 46" deck, used on JD 110, 112 and all the 200 series. It's a early 2 wheel deck, JD came out with a later 4 wheel deck.


When I was ordering parts for the deck this week we were challenged to find the parts listing as I thought it was a 48" deck from a 112L. It turns out it was a simple 112 and the only parts drawing that mirrored the deck was a "47"" listing. Is there a diff between American and Canadian listings?

#6 Leonard VanCamp ONLINE  

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Posted September 16, 2017 - 01:59 PM

When I was ordering parts for the deck this week we were challenged to find the parts listing as I thought it was a 48" deck from a 112L. It turns out it was a simple 112 and the only parts drawing that mirrored the deck was a "47"" listing. Is there a diff between American and Canadian listings?

There are a couple of listings for John Deere decks of this type, there"s a 46 deck, a 47 deck and two or three 48 decks. One is the early deck for the 110,112 and 200 series tractors. Another listing is the deck for the 120,140 and 300 series tractors. Then you have listings for the replacement decks. The easy way to tell them apart is the location of the drive pulley and the amount of wheels on the deck. The 110, 112 and 200 series tractor decks have a offset drive pulley located to the rear of the deck. The 120,140 and 300 series use the deck with the pulley in center front. Replacement decks have four wheels, earlier ones have two.


Edited by Leonard VanCamp, September 16, 2017 - 02:04 PM.

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#7 My3kidsfather ONLINE  

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Posted September 17, 2017 - 10:27 AM

There are a couple of listings for John Deere decks of this type, there"s a 46 deck, a 47 deck and two or three 48 decks. One is the early deck for the 110,112 and 200 series tractors. Another listing is the deck for the 120,140 and 300 series tractors. Then you have listings for the replacement decks. The easy way to tell them apart is the location of the drive pulley and the amount of wheels on the deck. The 110, 112 and 200 series tractor decks have a offset drive pulley located to the rear of the deck. The 120,140 and 300 series use the deck with the pulley in center front. Replacement decks have four wheels, earlier ones have two.


Ok I got ya, this is a simple early 112 deck, listed on the Canadian John Deere parts lists as a 47". It has the drive pulley centre rear, 2 wheels and accompanying rollers.

Leonard, Would you use simple varsol to clean the decks before priming?

Edited by My3kidsfather, September 17, 2017 - 10:33 AM.


#8 Leonard VanCamp ONLINE  

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Posted September 17, 2017 - 11:18 AM

I've used a rag soaked with acetone to clean a couple, but that was all I had at the time, never tried varsol yet.



#9 My3kidsfather ONLINE  

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Posted September 20, 2017 - 11:55 PM

Today i remembered there is a simple pleasure in cleaning parts. I stood for a couple of hours at the wire-brush equipped grinder cleaning up all the bolts, washers, and nuts first. Then the larger parts. I found myself disasembling some exterior parts just to get a bit of rust off that i could not reach otherwise. Next is some priming for paint.

Oh and the varsol seemed to work just fine.

Edited by My3kidsfather, September 20, 2017 - 11:56 PM.

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#10 My3kidsfather ONLINE  

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Posted October 03, 2017 - 10:07 PM

Update- here is a few pics of the deck reconditioning. First was lots of sanding, scraping, and followed up with rust rehab. A POL like chemical was applied to convert whatever rust remained into rust-resistant metal. A conditioning rust primer next with paint following in three coats. It might ne good enough with that, tomorrow will tell the story after it has dried. I noticed the pictures make the paint look better than it does in person.

New bearings next with a new main pulley to be installed. My use of the shop has changed from a wood working shop into a more mechanical shop- i sold my table saw, dust collector, jointer, and planer, keeping the bandsaw and drill stand. Bought a Record 5” bench vise- it’s a monster.

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#11 propane1 ONLINE  

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Posted October 04, 2017 - 07:43 AM

Must of been hard to cover the black with the yellow, did you put gray primer on before the yellow. Great lookin job your doin.

 

Noel


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#12 My3kidsfather ONLINE  

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Posted October 07, 2017 - 01:15 AM

Must of been hard to cover the black with the yellow, did you put gray primer on before the yellow. Great lookin job your doin.
 
Noel


Noel i think the black actually made it easier as it was easy to see where the paint was thin, and easy to fill out the color. It seems to be good paint anyway. I got it from JD. I have some help coming eoth the bearings this coming weekas i am not sure just how to put them in.
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#13 Trav1s ONLINE  

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Posted October 10, 2017 - 08:13 AM

Looking good!  I did POR-15 on the 41 deck for my 120 and the result turned out better than I anticipated.  


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#14 Leonard VanCamp ONLINE  

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Posted October 10, 2017 - 08:16 PM

That mower deck is turning out nice!


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#15 My3kidsfather ONLINE  

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Posted October 20, 2017 - 08:42 PM

I just realized i have the letters backward, it should be ROP instead of POR. Anyway been collecting parts needed, 2 idlers, one new spindle pulley. New bolts sheared off while taking it all apart. I have been trying to rust proof as much as possible before painting, and it shows in the black primer which is a rust ROP formula. Time will tell if it’s worth the effort. Assembly coming next week.

By the way, the vinegar rust removal is quite good if you have time to let it soak for a week.

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