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BUSY BOLTERS Are you one?  The Shop Area
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Jul 21st, 2025 | | | | Joined: Feb 2015 Posts: 14 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2015 Posts: 14 | Starting hearing a grinding noise in the tranny of my 45 1/2 ton?? Noticed it only in 1st and 3 rd. I've parked it, but never been into the tranny, so I'm shut down until the problem is solved. It is a horrible loud grinding type sound. Sounds like metal grinding on metal. Does'nt happen in 1st or R. Need help in a bad kinda way!! PLEASE!
"Life is tough.....it's even tougher if you're stupid" ~ John Wayne
| | | | | Joined: Sep 2006 Posts: 3,597 'Bolter | | 'Bolter Joined: Sep 2006 Posts: 3,597 | I would suggest draining it and pulling the cover for a look, sounds like you have lost some teeth or a bearing. If it has failed there are used ones around, you could post and add in the Swap Meet here. Drained they weigh around 130 lbs and are fairly economical to ship on Greyhound if you had to, a lot cheaper than a rebuild most likely. | | | | | Joined: Feb 2015 Posts: 14 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2015 Posts: 14 | Thanks Brad.... Anyone I could send it to for a rebuild??
"Life is tough.....it's even tougher if you're stupid" ~ John Wayne
| | | | | Joined: Sep 2006 Posts: 3,597 'Bolter | | 'Bolter Joined: Sep 2006 Posts: 3,597 | I would look for a good local shop, really I think the best bet if it is broken parts would be to secure a replacement. I am unsure about the availability of the older transmission parts. There is a robust parts network and rebuilders for everything SM420 and newer because the off-road guys use them to. You could try giving Novak a call for ideas, they are located in Logan, Utah and I have sold them a ton of cores, Google them. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | 3 or 4 speed trans? I've got a crash box 4 speed from a 1946 1 1/2 ton that's not doing anything, in south central Tennessee.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Feb 2015 Posts: 14 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2015 Posts: 14 | 3 speed Jerry. Thanks though! I'll google Novaks n givem a call
Last edited by ndrtkr; 04/25/2015 3:29 AM.
"Life is tough.....it's even tougher if you're stupid" ~ John Wayne
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The sm420 is a 4 speed trans.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Feb 2015 Posts: 14 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2015 Posts: 14 | If the sm420 is 4 speed. What's the 3 speed
"Life is tough.....it's even tougher if you're stupid" ~ John Wayne
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