lynnmor 7,828 #1 Posted January 26, 2016 Did some serious snow removal with my three 520H's. Only two issues to report and that was on the 1991 with a 44" blower and cab. The lift cylinder started to leak, I'll try to nurse that till spring. I started to have PTO slippage, and found that a bolt pulled out of the block. It was one of the bolts that holds the top of the PTO and the muffler in place. The threads pulled out of the block. I was able to install a longer bolt because there were good threads deeper in. My suggestion is that anyone with this Onan setup, get longer bolts in there now. I'll Heli-Coil mine as well. 6 Share this post Link to post Share on other sites
AMC RULES 37,196 #2 Posted January 26, 2016 Really nice looking cab... wondering, is it brand new? Share this post Link to post Share on other sites
lynnmor 7,828 #3 Posted January 26, 2016 It's about 20 years old. Starting to get some pin holes, but it should last awhile. I disassemble it and store it in the basement, I think the fairly even temperatures and no sunlight is a big help. 3 Share this post Link to post Share on other sites
ericj 1,579 #4 Posted January 29, 2016 guess i'm not the only one in red lion with a 520 blower and cab, looks good eric j Share this post Link to post Share on other sites
Pollack Pete 2,273 #5 Posted January 29, 2016 Gotta love the corrosion that takes place between dis-similar metals.The steel bolt and the aluminum block.Any time I bolt anything back into the block,or anything else for that matter,I use plenty of never-seeze.Taking things apart next time is a breeze. 1 Share this post Link to post Share on other sites
lynnmor 7,828 #6 Posted January 29, 2016 3 hours ago, Pollack Pete said: Gotta love the corrosion that takes place between dis-similar metals.The steel bolt and the aluminum block.Any time I bolt anything back into the block,or anything else for that matter,I use plenty of never-seeze.Taking things apart next time is a breeze. Just so you know, I did have anti-seize on the bolts. My theory is that the bolt may have loosened a bit from the muffler vibration and the straight pull from the PTO. Once loose the threads take a beating and eventually fail. Anti-seize will allow the the bolt to more freely loosen, so when I redo this, I'll use longer bolts and thread locker. If you have an Onan, get longer bolts in now and check the tightness from time to time, particularly if you use anti-seize. Share this post Link to post Share on other sites
Pollack Pete 2,273 #7 Posted January 29, 2016 44 minutes ago, lynnmor said: Just so you know, I did have anti-seize on the bolts. My theory is that the bolt may have loosened a bit from the muffler vibration and the straight pull from the PTO. Once loose the threads take a beating and eventually fail. Anti-seize will allow the the bolt to more freely loosen, so when I redo this, I'll use longer bolts and thread locker. If you have an Onan, get longer bolts in now and check the tightness from time to time, particularly if you use anti-seize. Loctite is great for some applications,but not all.If you never have to take those bolts out ever again,I'd say fine,use it.Much easier to check the tightness of the bolts once or twice a year and be able to remove them when needed.A little story here.......friend of mine was complaining about the caliper slide bolts seizing up on his pick-up.I told him I use never-seeze on mine at every brake job and I've never had one sieze up.He says......never seeze is too messy to work with and I can't get the gray stain off my hands.I said........good enough.Keep putting calipers and pads on your truck .At least he has clean hands. 1 Share this post Link to post Share on other sites
clip 185 #8 Posted January 29, 2016 Nickel anti seize is what I used to use on caliper slides, and still use on all stainless to stainless connections to prevent galling. However, at higher temperatures the nickel anti seize will gum up and take some serious effort to remove and clean. I've gone to copper anti seize on my exhaust manifold connections and CRC's green synthetic brake caliper and hardware grease for all my brake applications. Withstands high temperatures, doesn't gum up and performs better than the nickel. Share this post Link to post Share on other sites
WHX?? 51,784 #9 Posted January 29, 2016 16 minutes ago, Pollack Pete said: I can't get the gray stain off my hands Why is it one can never open up a bottle of anti seize or roof tar for that matter and not have it all over yourself when done?!?!?! Ah well...life of a wrencher! 1 Share this post Link to post Share on other sites
HokieAg07 129 #10 Posted January 30, 2016 Ive had to replace my bolts with longer as well, on my 96 520H. Lots of stress on those bolts and in turn, threads. Share this post Link to post Share on other sites
