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| | | | Joined: Jan 2015 Posts: 914 'Bolter | | 'Bolter Joined: Jan 2015 Posts: 914 | My son's truck is having an engine rebuilt and the clutch done. While that was being done I wanted the transmission gone over.
It shifted ok and did not pop out of gear though it sounded noisy to me. Though I have no frame of reference to say the amount of noise was normal or excessive.
Today the engine and transmission were pulled out. The top cover was removed for a quick inspection.
No chipped or broken teeth were found though the top gears were pitted from rust from sitting for many years.
Is it safe to assume the bearings are pitted as well?
How hard is it to get all new gears?
Who is a good source for gears?
Should I just replace the bearings?
My son uses this truck for his catering business and he can put on 50 to 200 miles a week, 7 months a year.
Being everything is apart and that he will be using this truck a lot more then driving to a few shows a year it would seem to make sense to have the transmission done now.
Opinions and guidance please. Jeffrey | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I am not a transmission expert but I believe that pitting on the gear teeth is a very bad thing. For dependability I would be replacing them for sure. I would suggest looking for a used transmission or two. | | | | | Joined: Oct 2013 Posts: 331 Shop Shark | | Shop Shark Joined: Oct 2013 Posts: 331 | Pitted gear teeth may run for a very long time without issues. However if there was once rust inside the transmission the chances are good the bearings rusted as well. If you're hearing 'noise' that isn't normal then the chances are that the bearings are pitted as well. I've rebuilt and ran many a manual transmission with pitted gears and never had any issues. Now you might experience some if you intend to put a miracle mile on this transmission - but I suspect this probably isn't the case. I'm running one right now that was so rusty when I got it that it was physically stuck. I broke it loose with an air hammer, flushed it out with diesel fuel, put clean oil in it and have been running it for a few months now with out any issues.
1950 4100 - unrestored and driven weekly for almost no reason at all.
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The gears will hone themselves in. I would replace the bearings & clean it all up. The front input shaft brg. will cause wineing noises in all gears except high when it is pitted.
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 2004 Posts: 29,778 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,778 | Crash box transmissions are noisy, mostly because of the gears, especially in anything but high gear, not necessarily from wear or damage. Chances are a bearing change will get a lot more mileage out of the box, as long as there's not a great deal of deep rust pits to deal with.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | agree with the gears being OK, put new bearings in it and run it. Pitting on the gears will give added places for the oil to cling and help lubrication! (in theory... lol) | | | | | Joined: Jan 2015 Posts: 914 'Bolter | | 'Bolter Joined: Jan 2015 Posts: 914 | Jerry allowed me to email him photos of the gears. He said they were not that bad so unless after taking the transmission apart and I finding something we will most likely will just be replacing the bearing. Thanks to all for responding. Jeffrey | | |
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