Repairing a bracket mount on a 1610D

bruce1966us · Mar 20, 2005

I'd have to look, but I don't think Koyker sends grade 8 hardened bolts (with the hardware kit) to use to mount the bracket.

DavesTractor · Mar 20, 2005

I believe Koyker uses 8.8's, which should be equivalent to grade 5's. I think 10.9 is closer to grade 8.

Ben_Conner · Mar 20, 2005

( I thought Koyker had a belly bracket that attached to the 4 bolts underneath for added stability. What model loader do you have? 110/80? )
It's a 110. Had to clean up my office before I could find the paperwork on it. /forums/images/graemlins/smile.gif

--Ben

Ben_Conner · Mar 20, 2005

( Nothing will snap off a bolt faster then it not being tight against it's mounting surface. )
Speaking of that, what would be a good torque spec for these bolts?

normde2001 · Mar 21, 2005

After taking a second look at the broken bell housing, I have to agree with Len about the loose bolts. It appears that the threads have been worn away as if by a loose and wobbly bolt. Here is a torque spec site for US threads you can convert to metric. I'm sure there are others.

Ben_Conner · Mar 21, 2005

Hi,

Found a local machine shop that works on a lot of tractors. The owner says they won't have any problems fixing the holes (other than the one that broke out), and they can extend the brackets to reinforce them. Thanks to all who responded--I've never gotten this much good advice on anything! 'preciate it!

--Ben

evofxdwg · Mar 30, 2005

I agree loose bolts probably led to breakage of the casting. But I dont believe you have enough anti-torque reinforcement on those brackets - even if you rebuild as described in the thread!

I went out and looked at my 1610D/Koyer 80 mounts. I believe you will have trouble again if you do not put a long reinforcing arm to the frame rails. You can see the brackets with reinforcing arms in the Hoye install pix. They are about a foot long and will do more to counteract twisting force (torque) than any of the bolts close to the main bracket member. Mine have this (and look even beefier than the ones in the Hoy pix) and a bottom plate that passes under the driveshaft connecting the two belly brackets together. Also, my brackets have a long, thick stiffener bars from the TOP of the bracket assembly (near where the cylinder connects) down to the front bumper of the tractor, welded to a round bar captured in a channel bolted to the front bumper. So there are two anti-torque arms on each side of mine - one at bottom and a big long one on the top. My brackets are the quick disconnect type and have Koyker part numbers on them.

After several weekends of use, i checked over my FEL mounting bolts and to my surprise, found 2 missing from the bottom plate and 3 others loose. Two of the bolts that were loose were already boogered up so they needed replacement - they were the ones that broke out on yours. Obvously the installer had not finsished the job (didnt tighten). I think i was just lucky that i caught it in time.

Jagmandave · Mar 30, 2005

Maybe a little blue Locktite is in order here, to keep this from happening again? The main pins for my 3ph kept coming loose over the summer, a little Locktite took care of the problem for me............