Last post is what you will need to perform the repair.
All the parts are at Fastenal. You can get serrated nuts at local hardware if needed.
I use green Loctite because it is wicking and you can use it after assembly.
1. Move slide out about 4" to relieve the stop or extended tension on motor/gearbox.
2. Install stud (Holo-Krome International #1125447 5/16-18 x 2 SSS CP)with allen wrench to about 10 to 12 ft. lbs. (or tighten very firmly)
3. Apply Green Loctite generously but wipe off excess when it quites wicking.
4. Install (small) Nord-Lock washer #NL8 (5/16") I.D. 8.7mm. Concave out towards nut.
5. Install 5/16 serrated nut with serrated side "UP". this seems like upside down but there is a reason. Look at previous post with assembled stud, nuts, and washers.
6. Install (Large) Nord-lock SP washer NLX8sp (5/16") #2374 with concave side towards serrated nut.
7. Do all 4 studs as stated above.
Not that hard if you don't over think it.
When all 4 are done, re-install motor into 4 slots. It should go right back in with the square drive through the gear box. I use the crescent wrench to wiggle the square drive rod if necessary.
8. After you install the 4 studs and motor assembly back into the mounting slots. Install 4 more Nord-lock washers NLX8sp (5/16") #2374 with concave side facing out and facing the serrated nut you can now install.
Now comes the torque wrench. I know many of may not own a torque wrench but because i am on the road I did not have one either. I went to NAPA and bought one for $34.99. The only way you can check ANY install is with a torque wrench that will allow you to repeat the exact and proper torque of the nut. (Home owner v.s. professional)
9. You need to torque in three segments. approx 12' lbs, 18' lbs, and final at 24' lbs. Wait about 3 min and repeat 24 ft lbs. Continue this until you get a quick snap on the torque wrench. YOU ARE NOW DONE.
What you have done here is used the nut on both sides of the mounting to hold the motor/gearbox in place with 24 ft lbs. of torque v.s. the aluminum boss on the gear box. This will replace the partial inserted bolts with loctite and in most cases are loose or will come loose. If you don't torque bolts you are relying on a Hand Shake fix.
1. Studs go all the way to bottom aluminum boss. (Full Threads)
2. Easy to take out, service, or replace in the future. (if ever needed?)
3. You can check torque on studs with allen without removing assembly. Just loosen nut and check the tightness or torque on stud. (this should not be necessary if stud was installed and loctited but does give you the option.)
You can now pick your poison......
LATEST UPDATE 11/22/19 HOW MOTORS ARE HOLDING IN PLACE