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There seems to be a problem with the hydro transmission. is there a way to service the fluid? the transmission grinds and has no power. i put on a new belt but it didnt seem to help.

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First make sure the transaxle is not leaking. The transaxle is supposed to be a sealed unit requiring no service.But if you remove the back hitch plate from tractor,there is either a vent hose with a screw out fittting or a 1/4 allen wrench plug on top of transaxle.If you purchase a battery filling bulb from sears auto center,it will fit down that hole to suction out the oil,do the when oil is warm to speed the process up it will take about 10 min to remove the oil,(about 1.5 quarts) add oil to within 1.5 inch of the top but do not overfill,you must leave a space of air for expansion, Refill with ams oil or mobil 1 synthetic motor oil 15w-50 or 20w50, it must be synthetic oil, If this doesnt improve it is too late for your tranaxle,if it does improve it do this once a year.

Posted on Jul 30, 2009

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I put a new drive belt on my la 175 jonh ddeere mower but its still when it get hot


hydraulic transmission is going out. you may get some additional life out of it by changing the tranny oil.

The NOT SERVICEABLE UN-TRUTH.

The Huskvarna YTH150 uses Hydrogear transmission 319-0650, drive model 150071. One place to find parts and diagrams for most Huskvarnas is here: http://www.m-and-d.com/Hydro-Gear_parts.html

MTDs use Hydrogear trannys also. Go to the site and enter 618-0319 in the search box. It will bring up a selection of MTD transmissions.

Sears Craftsmen mowers also have trannys from Hydro-Gear.

The best lawn tractor Hydrostatic Transmission Fluid is actually 10W-50 synthetic motor oil (like Mobil 1). Do not use hydraulic fluid or transmission fluid.

Hydro static transmissions on most lawn tractors are very similar. Most of them are made by one or two manufacturers. Tuff Torq makes a lot of them, but not the Huskvarnas. They do make all the John Deere lawn tractor hydro drives. The lawn tractor manufacturers (like JD) often say they are sealed and not serviceable. That is flat out, an untruth. All of the JD hydros, and most all others, are serviceable. A complete line of rebuild/replacement parts can be found at Tuff Torq. Info and instructions can be found there. They have a lot of good general info for anyone rebuilding their tranny.

Additionally, I have found that the mower manufacturers fill them (or spec them) with motor oil, 10W-30W. In the service manual, and at the hydro manufacturer, you are told if your tractor is used in extreme or heavy duty situations it's best to drain the oil and replace it with 10W-50 synthetic motor oil (like Mobil 1™). Truth is the tranny should have this oil from the get go. It will give you more power and extend the life of the tranny. The mower manufacturers are all just being cheap. They figure why not, you're the one who has to pay for the early failure. Oh yeah, one other minor detail, the tranny manufacturer also recommends regular oil changes, like every 100 hours.

Virtually all of these trannys have a black drain plug on the top, if they do not have the add on reservoir. You have to remove the tranny from the mower (not a difficult things to do, it takes about 30 min). Pull that black plug (I used a 1" putty knife to pry mine out) and turn the tranny upside down for about 30 min to completely drain. Most hold about 2 quarts. Flip it back, right side up, and refill. Install plug and reinstall tranny. Note: under the plug there is often a magnet which collects metal shavings. Lift this magnet out while you have the plug out; clean it and replace it. It may fall out while the tranny is upside down.If anything else falls out, you have a broken tranny and will have to take it apart.

When you refill the fluid just keep filling till it comes up within a quarter inch of the plug. You may have to go through a bleed process after reinstalling the tranny. The tuff torq site explains the bleed process.
http://tufftorq.com/products/lawn-garden/index.html

Tuff Torq Lawn Garden

May 21, 2015 | Garden

2 Answers

Oil type in hydro tranny


Owner's manual, no manual, try MFG website, or email their customer service, or try manualslib.com

Apr 14, 2015 | Garden

2 Answers

What type of fluid does the transaxles take?


Usually it is 20w50 Synthetic motor oil If your writing about Lawnmower hydrostatics.

Apr 07, 2015 | Garden

2 Answers

No forward/reverse


what do we have to do to get you people to put make and model in your question .I' am not a mind reader .FRUSTRATED EXPERT

Mar 29, 2015 | Garden

1 Answer

There is a grinding sound coming from some where in the back. Axle? Whatever is holding the tires on? I have no idea. Grinding happens going forward and reverse.


Specify Make/Model and year or hours on machine for a more precise answer. You may have a manual transmission or a Hydraulic transmission.

Possibly, based on your description of the problem, your hydraulic transmission is going out. It might be possible to save the tranny. If it is a Hydraulic Transmission, the following info might give you some direction.

The NOT SERVICEABLE UN-TRUTH.

The Huskvarna YTH150 uses Hydrogear transmission 319-0650, drive model 150071. One place to find parts and diagrams for most Huskvarnas is here: http://www.m-and-d.com/Hydro-Gear_parts.html

MTDs use Hydrogear trannys also. Go to the site and enter 618-0319 in the search box. It will bring up a selection of MTD transmissions.

Hydrostatic Transmission Fluid is actually 10W-50 synthetic motor oil (like Mobil 1). Do not use hydraulic fluid or transmission fluid.

Hydro static transmissions on most lawn tractors are very similar. Most of them are made by one or two manufacturers. Tuff Torq makes a lot of them, but not the Huskvarnas. They do make all the John Deere lawn tractor hydro drives. The lawn tractor manufacturers (like JD) often say they are sealed and not serviceable. That is flat out, an untruth. All of the JD hydros, and most all others, are serviceable. A complete line of rebuild/replacement parts can be found at Tuff Torq. Info and instructions can be found there. They have a lot of good general info for anyone rebuilding their tranny.

Additionally, I have found that the mower manufacturers fill them (or spec them) with motor oil, 10W-30W. In the service manual, and at the hydro manufacturer, you are told if your tractor is used in extreme or heavy duty situations it's best to drain the oil and replace it with 10W-50 synthetic motor oil (like Mobil 1). Truth is the tranny should have this oil from the get go. It will give you more power and extend the life of the tranny. The mower manufacturers are all just being cheap. They figure why not, you're the one who has to pay for the early failure. Oh yeah, one other minor detail, the tranny manufacturer also recommends regular oil changes, like every 100 hours.

Virtually all of these trannys have a black drain plug on the top, if they don't have an add on reservoir. You have to remove the tranny from the mower (not a difficult things to do, takes about 30 min). Pull that black plug (I used a 1" putty knife to pry mine out) and turn the tranny upside down for about 30 min to completely drain. Most hold about 2 quarts. Flip it back, right side up, and refill. Install plug and reinstall tranny. Note: under the plug there is often a magnet which collects metal shavings. Lift this magnet out while you have the plug out, clean it and replace it. It may fall out while the tranny is upside down.

When you refill the fluid just keep filling till it comes up within a quarter inch of the plug. You may have to go through a bleed process after reinstalling the tranny. The tuff torq site explains the bleed process.

Mar 14, 2015 | Garden

2 Answers

MTD 918-0319 Hydrostatic Transmission is it a sealed unit or do you add grease


you add hydrostatic fluid through the filler hole

Oct 03, 2014 | Garden

1 Answer

Where do find the drain for transmission fluid


Hydrostatic Transmission Fluid is actually 10W-50 synthetic motor oil (like mobil). Do not use hydraulic fluid or transmission fluid.

Hydro static transmissions on most lawn tractors are very similar. Most of them are made by one or two manufacturers. Tuff Torq makes a lot of them. They definitely make all the John Deere lawn tractor hydro drives. The lawn tractor manufacturers (like JD) often say they are sealed and not serviceable. That is flat out, a lie. All of the JD hydros, and most all others, are serviceable. A complete line of rebuild/replacement parts can be found at Tuff Torq. Info and instructions can be found there. It's quite likely they made your tranny too.

Additionally, I have found that the mower manufacturers fill them (or spec them) with motor oil, 10W-30W. In the service manual, and at the hydro manufacturer, you are told if your tractor is used in extreme or heavy duty situations it's best to drain the oil and replace it with 10W-50 synthetic motor oil (like mobil). Truth is the tranny should have this oil from the get go. It will give you more power and extend the life of the tranny. The mower manufacturers are all just being cheap. They figure why not, you're the one who has to pay for the early failure. Oh yeah, one other minor detail, the tranny manufacturer also recommends regular oil changes, like every 100 hours.

Virtually all of these trannys have a black plug on the top. You have to remove the tranny from the mower (not a difficult things to do, takes about 30 min). Pull that black plug and turn the tranny upside down for about 30 min to completely drain. Most hold about 2 quarts. Flip it back, right side up, and refill. Install plug and reinstall tranny. Note: under the plug there is often a magnet which collects metal shavings. Lift this magnet out while you have the plug out, clean it and replace it. It may fall out while the tranny is upside down. When you refill the fluid just keep filling till it comes up within a quarter inch of the plug. You may have to go through a bleed process after reinstalling the tranny. The tuff torq site explains the bleed process.

The Huskvarna YTH150 uses Hydrogear transmission 319-0650, drive model 150071. One place to find parts and diagrams is here:http://www.m-and-d.com/Hydro-Gear_parts....

Sep 22, 2014 | Husqvarna Garden

2 Answers

Husqvarna hydrostatic transmission


my transmission on the right side do not have the power the lifr side have what do i need to do to fix it

May 14, 2013 | Husqvarna Rz5424 Zero Turn Lawn Mower...

1 Answer

Smoked trans. on hydro trans. mod#917.270940


You drill whole in the bottom of the transmission. Drain the old fluid, then tap in threads for your new drain bolt. The Allen bolt on the top of the transmission is where you put in new 20w50 synthetic oil.

Apr 16, 2012 | Garden

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