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Massey Harris 744


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  #1  
Old 12-09-2018, 05:20:41 AM
Nathan Woodruff Nathan Woodruff is offline
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Default Massey Harris 744

Hi, Have just acquired a Massey Harris 744 with Perkins P6 engine. I am looking for information regarding servicing the brakes and also looking for an instruction/service manual. I would also be interested in finding out the date of it as this one has some different features to another 744 I have worked on. It is in reasonable condition and the engine runs well although has an occasional small miss on one cylinder.
Regards,
Nathan
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  #2  
Old 12-09-2018, 07:13:06 AM
ianoz ianoz is offline
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Default Re: Massey Harris 744

Try Steve at Plough book sales .
002686 Massey Harris 744D & 745 hydraulic equip. manual 1954 (photocopy), 38 pages, $25.00
015364 Massey Harris 744D & 745 hydraulic equip. Parts List 1954 (photocopy), 43 pages, $32.00
001846 Massey Harris 744D (Perkins) operators & workshop manual 1951 (p/copy), $28.00
002416 Massey Harris 744D Parts List 1952 (photocopy), $45.00
012302 Massey Harris 744D Perkins P6(TA) Mk. 3N Engines parts book from ser. no. 3025667 onwards (photocopy), 50 pages, $28.00
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  #3  
Old 12-09-2018, 05:30:14 PM
Scotty 2 Scotty 2 is offline
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Default Re: Massey Harris 744

Crikey. How straight is that tractor?
It seems to be in very good nick Nathan. Great find.

Cheers Scott
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  #4  
Old 12-09-2018, 09:24:49 PM
Combustor Combustor is offline
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Default Re: Massey Harris 744

Agreed, very tidy example. Spent some time as a lad in the Southern WA wheatbelt seeding and harvesting on one of those. Good honest machine.
Check the bolts fastening the belly casting to the front of the transmission. They tend to work loose and a failure can be a bit disastrous.
Keep us informed of progress with the old gal. Regards,
Combustor.
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Old 12-09-2018, 09:56:55 PM
Nathan Woodruff Nathan Woodruff is offline
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Default Re: Massey Harris 744

It certainly is in good original condition. Thank you Combustor I will make sure I check those bolts. I got the brakes apart today to see why they were not working at all. One side was seized on but had no drag. it happened to have some water in it which is why it had seized on. The other side is full of grease and gunk which I assume it should not be which is why it did not have any hope of slowing the tractor. I have not worked on tractor brakes before so am in uncharted territory. I think it should be straight forward to replace the brake lining but not sure what I need to check or do to the drums the brakes work against or how the drums come off for that matter.
Any help or tips about the brakes would be much appreciated.
Regards,
Nathan
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Old 12-10-2018, 01:16:25 AM
cobbadog cobbadog is offline
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Default Re: Massey Harris 744

Nice find Nathan,
It looks like the brake drums have to be wound off using those 2 bolt holes if they are threaded. BUT, be very careful as it looks as if it is stuck on the centre hub. Maybe just a clean up on the drums, it is not a high speed tractor for the next Bathurst race so they should be ok. As for all that grease. You need to find the source of where it is coming from and solve that issue. New linings should be an easy find through a brake place or a tractor spare parts seller. All you need to know is the ID of the drum and the width of the shoes and how many rivets you need.
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Old 12-13-2018, 02:52:58 AM
Nathan Woodruff Nathan Woodruff is offline
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Default Re: Massey Harris 744

Just a quick update I thought while I had the brakes a part would be a good time to pull the steering out and take up some slop. The steering looks to be in good shape the slop appears to come from two worn out split bushings on the main steering shaft should be easy to make some news ones or there might even be off the shelf ones that would suit.
Regards,
Nathan
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Old 12-13-2018, 12:32:22 PM
rodneyt rodneyt is offline
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Default Re: Massey Harris 744

hi Nathan,
looks like you're still having fun with a dangerous toy from your childhood,
i made these stands for myself only 2 years ago,
like you, ive had my guardian angels working overtime...
cheers Rod.
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Old 12-13-2018, 12:41:09 PM
rodneyt rodneyt is offline
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Default Re: Massey Harris 744

it so happens i have 2 M-H books,
both show six bolts holding brake drum on.
recommend a phone call to book sellers before purchase,
ask if book shows 6bolt brakes or big ring nut like yours.
hey maybe im wrong, it is not too clear exactly what you have,
the photos show machine not yet cleaned up,
i expect a clean-up will make it obvious how they come off.
these books do show that the brake drum is attached by the centre.
maybe the PloughBookSales book
006682 Massey Harris 745 chassis workshop manual (photocopy)
will show the supposedly newer system.
cheers Rod.
744D book 632 277 M2
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  #10  
Old 12-13-2018, 12:46:36 PM
rodneyt rodneyt is offline
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Default Re: Massey Harris 744

M-H 744 PD book Form No. 634916M1
this book has update patches pasted over several places in it,
but still appears not new enough to match your tractor.
can anybody show us what is in a 745 book?
best wishes Rod.
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Last edited by rodneyt; 12-13-2018 at 12:49:00 PM. Reason: photos dissappeared first try!
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  #11  
Old 12-13-2018, 04:02:26 PM
Scotty 2 Scotty 2 is offline
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Default Re: Massey Harris 744

Quote:
Originally Posted by rodneyt View Post
looks like you're still having fun with a dangerous toy from your childhood,
You mean the Honda that's not quite hidden?
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  #12  
Old 12-13-2018, 08:17:47 PM
Nathan Woodruff Nathan Woodruff is offline
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Default Re: Massey Harris 744

Thank you for the photos Rod. My Brake drums do appear to have a ring nut ( got a lot of grease to clean up on one side and rust on the other) but there are also holes in the brake drum which I wondered if they were for pins or something. I have had other people talk about 6 bolt pattern but no one knows what I am talking about with the nut. The nut would appear to require a special spanner which I will probably have to fabricate.
I do need to fabricate up some stands to make jobs like that a bit safer I did have a couple of props in whilst I was unbolting the front but had to get them out the road so I could roll the front end out.
Cheers, Nathan
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Old 12-14-2018, 01:51:28 AM
cobbadog cobbadog is offline
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Default Re: Massey Harris 744

I think that the drums are a press fit onto the shaft with a keyway. Can't see any 6 bolt holes as yet but may turn up after a clean. Our Cropmaster is a press fit onto the end of the main axle and was a case of using 'jack bolts' to wind it off the axle and is why I mentioned those 2 holes in the drum. Are they threaded by any chance?
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Old 12-14-2018, 02:48:48 AM
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Eric Schulz Eric Schulz is offline
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Default Re: Massey Harris 744

Nathan, I can not see any nuts. The brake drums are pushed onto a splined shaft, some of which is protruding from the drum. According to the parts book there is no locating device, such as a circlip, so probably just a tight fit. I have not had one apart. The shaft is hollow, and is sealed with a Welch plug. The drums appear to have threaded holes in them for extractor bolts. Screwing long threaded bolts into the holes may push the drums off. There should be solid enough cast iron behind the drums for the bolts to push against.

Eric
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Old 09-10-2019, 02:17:53 AM
Nathan Woodruff Nathan Woodruff is offline
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Default Re: Massey Harris 744

Well finally after a couple of months of waiting on brake lining. (not sure why it took them so long) I got the brakes back in it and it has left the shed for the first time since I purchased it.
https://www.youtube.com/watch?v=MqEAFRm4RnA
It now brakes alright. Not the best in the world but they never were even when new.
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