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By Lonnie Smith Baxter MN on Friday, August 07, 2015 - 08:16 pm:Maiden voyage for the tow truck today and I have a tranny question. I drove it about 20 miles to the local threshing show grounds and the 2nd tranny is so loud it's crazy. It's a Jumbo brand that has 1st, 2nd, 3rd and reverse. When I had it out everything seemed fine with it, spun free and shifted good so are these tranny's junk or should they have very loud gear noise? I'm thinking about deleting it and not having a 2nd transmission. What do you think?
By Henry Petrino in Modesto, CA on Friday, August 07, 2015 - 08:31 pm:I wouldn't delete it. To do so would probably be a bigger job than you think.
I have a Muncie in my TT. It's a little noisy, particularly in 1st gear. I had mine apart a few years ago and replaced the bearings. Everything else, though a little worn, looked OK. To some extent , I believe some noise is just part of the deal with these old TT auxiliary transmissions.
Also worthy of note: My truck was used by my grandfather on his ranch to haul in fruit from 1946 until he retired in 1963. I first drove it when I was around 9 or 10 (ca. 1957). It sounded the same then and is still going strong, noise and all.
By Les Schubert on Friday, August 07, 2015 - 09:41 pm:Lonnie
Use at least 140 wt gear oil
By Andy Loso St Joseph, MN on Friday, August 07, 2015 - 09:45 pm:Lonnie,
I am in need of a tow, are you AAA certified?
Those are straight cut gears and tend to be noisy from the get go. Les is on the right track heavy oil should quiet them down some.
By keith g barrier Savannah Tn. on Friday, August 07, 2015 - 09:53 pm:Lonnie, I use the Lucas gear oil stabilizer in different gear boxes and it will help quite them down. KGB
By Lonnie Smith Baxter MN on Friday, August 07, 2015 - 10:48 pm:Andy, no AAA but I was thinking of towing one of my doodlebugs through the parade with it.
I'll try some different oil in it next week when I bring it home. Hopefully that will make it a little quieter.
By bob middleton on Friday, August 07, 2015 - 10:56 pm:Straight gears and with two box's problem twice as loud
By Chad Marchees _____Tax Capital, NY on Friday, August 07, 2015 - 11:24 pm:Lonnie, I am not familiar with that transmission, but free spinning doesn't necessarily mean that the bearings are good. And as mentioned, straight cut gears are inherently louder. You can try heavier oil, it should certainly help, or the problem could be deeper.
By Tom Lovejoy, So Cal on Saturday, August 08, 2015 - 12:34 am:I have a Rocky Mountain 6 speed in my TT, have not driven it yet - but I have already had two people tell me those transmissions really sing going down the road, can't wait. :-)
By Roger Karlsson, southern Sweden on Saturday, August 08, 2015 - 06:02 am:The Jumbo Giant transmission is in direct drive in second gear. If it's the gears that makes the most sound, then second should be less noisy.
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