rear torque bolts - mahindra 2555

[mikeman1]

I bought wheel spacers (1.5 inches) so i can have the chains on without hitting the sides of the fenders, etc. i was looking in the manual and it states 262-282 ft. lbs. seems high to me. does that sound about right? do other tractors have it this high for a 55hp tractor? or maybe its a misprint in manual. i wouldnt think so but thought i would ask before stripping them.

thanks


Merry Christmas! Happy Holidays!

 

[RNeumann]

Sounds like a misprint. Check the bolt size against a bolt spec sheet but 80-100’lbs is more normal. Maybe 110’lbs. Do they give you a newton Meter spec?

 

[mikeman1]

no newton meter spec, yeah, seemed high to me too. i will try calling dealer tomorrow.

thanks

 

[TractorNH]

no newton meter spec, yeah, seemed high to me too. i will try calling dealer tomorrow.
thanks

Did you get your answer from the dealer? The torque charts I found go by bolt grade and bolt diameter. I have a 2655 which is essentially the same tractor and if I remember correctly the rear wheel bolts are 16mm grade 10.8 which puts the torque spec at 230-280 ft lbs. That said, when I was installing my 2" spacers I only tightened them to 150 ft lbs since my spacers are aluminum. I didn't want to risk pulling the studs through tightening the wheel on.

I also used red Loctite on the bolts that hold the spacers to the hub and since you can't get to them without taking the wheel off. I also used a white paint pen to put witness marks on the end of the bolt at the inside of the hub so I can see if they've moved. I took this pic before I made the marks but basically just a mark from the center of each bolt out and onto the black portion of the tractor hub. If the mark ever gets out of alignment then I know I need to pull the tire and retorque the bolts.



Where did you get your spacers? I got mine from Bro-Tek and am very pleased with them.

As a side note, make sure they are right before you go to install them. The first ones I finally got in from another manufacturer after a several month's long struggle ended up being wrong. It turned out the info in their database had listed the dimensions for the front wheel on the 2555 as being the dimensions for the back wheel. If you run into the same problem I can tell you that Richard at Bro-Tek has the correct dimensions. Since I ran into the problem with the first set I had questioned the dimensions he had before he started making them and discovered he had the same incorrect dimensions in his database. He then physically located a 2555 on a dealer lot near him in Canada to get the correct dimensions so he could make them. It made the process take a little longer but I ended up with the correct spacers and am very pleased with his customer service.

 

[TractorNH]

no newton meter spec, yeah, seemed high to me too. i will try calling dealer tomorrow.
thanks

And my biggest gripe with the Mahindra manuals including the service manuals is that they don't give the torque specs for specific bolts on the tractor, only general specs. When I had previously discussed this with a service manager at one dealership he said the torque charts are one thing but you also have to consider what the bolt is threading into since going to the high torque specs can also damage the threads in some of the castings. It's kind of a crap chute...I just try to make sure everything stays tight and I stay at the low end of the torque specs or even lower than the specified number if it's not a critical component. In reality you just want everything to be tight and not be able to move. Doesn't necessarily mean you need to stretch the bolts to get it tight enough.

 

[mikeman1]

Yeah, the dealer didnt have a spec chart for the tractor but he checked with one of the mechanics in the shop and said 140-150 ft lbs is what they usually do. i got mine from motorsport tech. thanks for the info. i do use witness marks on the lugs when on the rim but i never thought about putting them on the back of it like you did, thanks that will put my mind at ease to know if the spacer bolts are loosening. i hope these spacers fit, it will be a pain to ship back.

 

[TractorNH]

Yeah, the dealer didnt have a spec chart for the tractor but he checked with one of the mechanics in the shop and said 140-150 ft lbs is what they usually do. i got mine from motorsport tech. thanks for the info. i do use witness marks on the lugs when on the rim but i never thought about putting them on the back of it like you did, thanks that will put my mind at ease to know if the spacer bolts are loosening. i hope these spacers fit, it will be a pain to ship back.

Hopefully they figured out the dimensions. That's who I originally ordered mine from and hopefully for you my experience dealing with them is not the norm. It was a several months long ordeal just to get the first set so you can imagine the frustration when they arrived and they were wrong. I placed my order and had to chase them for over 2 months before the wrong ones arrived. Then I got the run around for another couple months...being told they were almost done and then being told they hadn't been started yet and back and forth every couple weeks when I'd call. They finally were telling me they could just give me a refund since they didn't know when they would get done since they hadn't even started them yet. Took me another few weeks and 4 more phone calls to get my refund. An ordeal that lasted me over 5 months and never got the correct spacers from them. I hope it turns out better for you.

If they're wrong I suggest getting your money back and contacting Richard at Bro-Tek. He doesn't have the Mahindra spacers on his website but they do make them. The only difficulty he had was sourcing the longer lug bolts to hold the spacers on the tractor since Mahindra/TYM uses a metric thread pitch on them that isn't the standard that everyone seems to stock. The spacers he made for me were absolutely perfect and Richard was great to deal with.

 

[mikeman1]

oh boy, does not sound like fun. it took about 6 weeks to get them. i didnt think it would take that long and there has been either snow on the ground or too mushy to jack up the tractor. i measured the opening of the center and the bolt spacing as well and it seems to be ok. only when i get to put them on will i really know. probsbly wont be until the spring now.

 

[TractorNH]

oh boy, does not sound like fun. it took about 6 weeks to get them. i didnt think it would take that long and there has been either snow on the ground or too mushy to jack up the tractor. i measured the opening of the center and the bolt spacing as well and it seems to be ok. only when i get to put them on will i really know. probsbly wont be until the spring now.

If you had the wrong ones you'd know it. If you checked the center hole diameter and the bolt spacing you should be good to go.

 

[mikeman1]

Well, I finally got to put the wheel spacers on this weekend. WOW. what a chore. rear tires are filled with rim guard, 635 lbs each tire. plus the tire weight and steel rim, about 850-900 lbs each. it was a struggle. me, my brother in law and nephew got it done.

what we did:
verify low pressure in tire as i dont like screwing around with tires with a lot of air in them.
cracked all studs/bolts loose, wow!, breaker bar with 3 foot pipe got it done.
jack up with bottle jack to about 1/4 to 1/2 inch off ground, safety jack as well and 2 jack stands.
this tractor had 4 bolts and 2 nuts (studs that came out of axle, i guess so it would be easier to line up by sliding rim onto the 2 studs.)
rolled tire to rear by 3pt and checked wheel spacer to make sure fit nice and everything lined up, verified bolts threaded into spacer.
ratchet strap the tire to 3pt so could not fall over.
mounted wheel spacer to axle, used blue loctite, the studs from axle were now used to hold the spacer on. (studs did not stick out beyond spacer so would not hit rim. also double checked to make sure lug bolts did not go beyond width of spacer so rim would seat correctly.
rolled tire back over by axle and walked the tire side to side to get bottom closer and using 6 ft steel pry bars to position bottom of tire close to axle. eventually close enough and then we lowered jacks tiny bit by bit until it lined up and leaned top of tire/rim in , then jack up tiny bit and and with pry bar the bottom of tire/rim went in while one of us pushed top of tire in so it would not slip off of the lip on spacer. now the tire/rim was resting on the lip of the wheel spacer all around.

Did this few times as the the tire would slip off the lip but eventually we got it!

then with tire/rim just 1/4 inch off ground and resting on the center lip of spacer we put a 3rd floor jack with short 2x4 under one side of the tire under one of the rubber tire lugs and gently, slowly pumped the jack so the tire would rotate until the holes lined up in rim.
tried all 6 lug bolts and only got one in, made it hand tight and backed off about 1/32 of turn , then tried the other 5 and only 1 of the other 5 got in, then another and another.

This was such a delicate process and so precarious that we just put them in without wasting time with lock washers and loctite right now.

WOW!

After torqueing down all lug bolts then took one out at a time to put blue loctite and lock washer on. torqued to 150ft lbs. on all bolts

Put witness marks on all wheel spacer to axle bolts (on back of axle since you could no longer see the head of the bolt holding the spacer in) and rim to wheel spacer bolts.

Hope it holds! but it got done, really took about 3-4 hours each tire, but frankly, it was a bit of draining process and we did one tire each day.

So glad the 2 studs from axle were used to hold spacer on, it would have been a real nightmare to get the tire on to the 2 studs again. I suppose if that were the case i could have double nutted the stud and take the stud out. but luckily we did not have to worry about it.

GOOD LUCK to anyone trying to put spacer on, or even taking and remounting a filled rear tire this size back onto a tractor.