750A seed boot bolts

Howdenshire Farmer

Member
BASE UK Member
Having developed some play in the seed boot mounting bolt holes of my 750A I have got a Drillfix kit from Shoup. However, there is a problem. The kit is designed for 3/8" bolts but the bolts on my drill are thicker than this (7/16" I think). Obviously the holes in the boot itself are designed for the bigger bolt but they won't go through the hole in the new bush. The new 3/8 bolts obviously fit through the bush but are a very loose in the holes in the boot.

I am currently exchanging emails with Shoup to figure out what is going on. They say that as far as they know all drills have 3/8 bolts.
Who else has used the Drillfix kit (I think it is also known by other names) and what size bolts did you use?
I know Angus has used them without problems.
Does anyone else happen to know the size of the bolts in their drill?
@Simon Chiles
 

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155tm

Member
Arable Farmer
Location
Kent
Morning Richard 90 series seed boots on my drill which must use the smaller 3/8 bolts. What year is your drill? I didn't think it would be on the new re-designed pro series coulter & seed boot? (if they have a larger bolt...?)

& you have had it since new? So would know if it had been drilled out for different size bolts....?

One of the other repair kits does use a bigger bolt, I think Clive used that kit on his first 750a.

No answers, more questions!
 

Howdenshire Farmer

Member
BASE UK Member
Morning Richard 90 series seed boots on my drill which must use the smaller 3/8 bolts. What year is your drill? I didn't think it would be on the new re-designed pro series coulter & seed boot? (if they have a larger bolt...?)

& you have had it since new? So would know if it had been drilled out for different size bolts....?

One of the other repair kits does use a bigger bolt, I think Clive used that kit on his first 750a.

No answers, more questions!
Morning Guy.
My drill is a 2016 model and I have had it from new.
All 3 holes in the arm are the bigger size so it must have been made that way.
I have just bought some 3/8 to 7/16 bushes to fit in the holes in the boot so the thinner bolts will be a good fit.
 

Clive

Staff Member
Arable Farmer
Location
Lichfield
Morning Richard 90 series seed boots on my drill which must use the smaller 3/8 bolts. What year is your drill? I didn't think it would be on the new re-designed pro series coulter & seed boot? (if they have a larger bolt...?)

& you have had it since new? So would know if it had been drilled out for different size bolts....?

One of the other repair kits does use a bigger bolt, I think Clive used that kit on his first 750a.

No answers, more questions!

I didn’t use the kit - drilling the oval hole round isn’t easy so we had ours milled out and bushed by a local machine shop - made our own bushes and bought bolts
 

155tm

Member
Arable Farmer
Location
Kent
hmm horrible feeling the really early drills had a smaller bolt (two piece seed boot type possibly)

let me measure a spare bush in my kit & get back to you
 

155tm

Member
Arable Farmer
Location
Kent
If a picture comes with this post

Or I might go back to Twitter to post you a picture of a bolt that suits my bushes & seed boots without modification. ‍♂️
 

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Howdenshire Farmer

Member
BASE UK Member
If a picture comes with this post

Or I might go back to Twitter to post you a picture of a bolt that suits my bushes & seed boots without modification. ‍♂️
Issue now resolved.
The person I originally dealt with at Shoup failed to tell me that there are two versions of the kit. He should have checked that I ordered the correct one. It isn't obvious from their website, so I didn't know.
They are now sending the correct kit foc and were very apologetic.
I'm happy with the service in sorting it out as they have done all they can to help.
If anyone should need a kit to suit 3/8" bolts then get in touch. Although I'm keeping it until the replacement arrives.
 

155tm

Member
Arable Farmer
Location
Kent
So 0.425 on a used bolt. that was more likely to have started out life as a 0.475 = 7/16 than a 3/8 = 0.375. That means my horrible thought that the early drills used a 3/8 bolt & Shoup have sent you a batch of early rather than late bushings is probably the problem...... They must be able to supply the larger bushes because I have got them!
 
Issue now resolved.
The person I originally dealt with at Shoup failed to tell me that there are two versions of the kit. He should have checked that I ordered the correct one. It isn't obvious from their website, so I didn't know.
They are now sending the correct kit foc and were very apologetic.
I'm happy with the service in sorting it out as they have done all they can to help.
If anyone should need a kit to suit 3/8" bolts then get in touch. Although I'm keeping it until the replacement arrives.

Ive got the old style genuine 750 and could be interested in the old kit.
 

Tractor Boy

Member
Location
Suffolk
How many acres has your drill done. My 2016 4m has just had its first set of new boots and fourth set of discs. I reckon it’s done 2700 acres or thereabouts . As yet the seed boot bolt holes are still hardly worn.
 

marco

Member
Morning Guy.
My drill is a 2016 model and I have had it from new.
All 3 holes in the arm are the bigger size so it must have been made that way.
I have just bought some 3/8 to 7/16 bushes to fit in the holes in the boot so the thinner bolts will be a good fit.
do you mind me asking where you got these bushings?
i ordered new coulters and bolts with part numbers off jd parts and it never crossed my mind that there could/would be different coulters/bolts.
just for reference for anyone going to re-metal their drill, coulters with 7/16 holes are N284044(rh) and N284045 (lh). 3/8 are N280446 rh and N280447 lh. @Howdenshire Farmer
 

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