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Old 06-21-2011, 01:41 AM   #1
leftyclick
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Default Transaxle fluid change

I just recently learned that my transaxle has a drain/fill plug, so I decided that after 12 years it was time for a fluid change. I snapped a few pics, in case anyone wanted to see how it went.

To change the gear oil, you have to drop the transaxle out.


The drain/fill hole is located on top of the tranny next to the gear selector. Here is a pic of the hole with the plug out: (the tranny is wet because I tried cleaning some of the grime off)


The drain plug was a little stubborn to get out. Here is a pic of it:


Basically, you just have to turn it upside down to drain the oil. The old oil was pretty dark, as you can see here on my finger:


The manual calls for 16 ounces of 80w90, so that's what I put back:


I noticed that it was pretty nasty around the brake too. Here is the before pic:


It was getting late tonight, so I will have to finish the job in the next couple of days. I'll snap a few more pics as I go, if you guys are interested.

Last edited by leftyclick; 06-21-2011 at 01:54 AM.
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Old 06-21-2011, 01:56 AM   #2
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Default Re: Transaxle fluid change

good job
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Old 06-21-2011, 05:41 AM   #3
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Default Re: Transaxle fluid change

Quote:
Originally Posted by leftyclick View Post
I'll snap a few more pics as I go, if you guys are interested.
For sure!.
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Old 06-21-2011, 10:39 AM   #4
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Default Re: Transaxle fluid change

I'm a bit concerned about the brake assembly being so oily, but I can't really take the time to pull the entire transaxle apart right now. I did go ahead and clean it up really well, so now I'm going to just try to keep an eye on it and make sure it's not leaking a bunch. Here's a pic of what the brake assembly looks like now:
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Old 06-21-2011, 10:41 AM   #5
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Default Re: Transaxle fluid change

Oh, and by the way, this transaxle is a Peerless MST-206-502C.
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Old 06-21-2011, 12:06 PM   #6
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Default Re: Transaxle fluid change

You should notice quite a difference in the performance once you start to use it again. I did mine recently and it's much smoother and quietier than it was before I changed the fluid and filter.
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Old 06-21-2011, 05:54 PM   #7
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Default Re: Transaxle fluid change

Ok, I didn't want to do this but what is that out of? I hate asking dumb questions.....I always thought that most of the Peerless transaxles were using that Bentonite grease in them. The AutoDrive trans is, I thought, a combo of Bentonite grease for the gears and fluid for the Hydro part of it.......but I never claimed to be an expert on the trans part...fact is, I've only played with one, and it was the hydro on an Ultra, needing a change of fluid. I used Pennzoil gear lube on it, a 75/90 full synthetic, that had the viscosity of regular motor oil, which I was told was what it used OEM.
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Old 06-22-2011, 01:14 AM   #8
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Default Re: Transaxle fluid change

Hankll: This transaxle is out of my '99 Murray 20hp 46". It's the one pictured in my sig. I too thought that all of them were just packed with grease, until I found a Peerless maintenance manual.

FrankMA: I hope so! If it doesn't make a huge difference, I'll still be happy just knowing it's running smoother.
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Old 06-22-2011, 05:38 PM   #9
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Default Re: Transaxle fluid change

leftyclick

Do you know the model # of your tractor? 46500x92A?
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Old 06-23-2011, 10:25 AM   #10
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Default Re: Transaxle fluid change

Quote:
Originally Posted by BushBoneYard View Post
leftyclick

Do you know the model # of your tractor? 46500x92A?
That is it! I was just a kid when I bought it, but the reason I bought this model was because it had grease fittings in places some of the other mowers didn't. I just didn't know the transaxle was serviceable too.

Looking back, another reason I chose this model was because I didn't like the plastic noses on the GT's. I really like this LT, don't get me wrong, but I kick myself now for not getting the GT!
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Old 06-23-2011, 11:16 AM   #11
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Default Re: Transaxle fluid change

Cool, we have the same tractor.
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Old 06-27-2011, 11:45 AM   #12
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Default Re: Transaxle fluid change

Well, I finally made time to get it all back together, but I didn't get any more pics. I thought I might share some tips for those who may want to try this though.

First off, there are 5 bolts holding it in. Two on each side where the axle shafts are, and one up by the shifter that mounts it to the frame (and is a real pain to get to.)

You also have to remove the spring for the brakes. If you pull the pin out to remove the spring, (where it attaches to the pedal assembly,) put the pin back to hold it all together. Otherwise it's a pain to line everything back up.

You might want to remove the drive belt idler pulley to get some slack on the belt.

When lowering the transaxle, be sure it is in neutral or reverse to make sure the shift lever clears the frame. Also make sure it clears the frame and idler pulley bracket when reinstalling it.

When you put the transaxle back into place, make sure the belt is back on the pulley and clears the guide rods on each side of the pulley.

That's all I can think of for now. These are all things that I had trouble with, so maybe my experience will help others!
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Old 06-27-2011, 11:58 AM   #13
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Default Re: Transaxle fluid change

Have you noticed any difference in the performance? Does it sound quieter and feel smoother? Just curious.
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Old 06-30-2011, 11:27 AM   #14
leftyclick
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Default Re: Transaxle fluid change

I just got to really use it yesterday evening when I mowed my yard. I actually can't tell any difference except that it may shift a little easier. It does make me feel better that it does have new oil in it though.
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Old 10-08-2011, 06:11 PM   #15
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Default Re: Transaxle fluid change

just dug this up looking for info on bentonite grease that the manuals call for.....mines a peerless model 930 if it makes any difference...


edit: so i'm too lazy to look the op's part number that which looks very similar to mine, is a little different.

so to replace the grease, do you have to open it up and all that? the search continues...

Last edited by andyinmichigan; 10-08-2011 at 06:34 PM.
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