Tuff Torq K66 Service
This oil change is at a total of 190 hrs on the clock and 127 hrs since the last K66 oil change on mine.
Before starting, I recommend,
1) An impact wrench, air is fine, but if you have an air compressor you probably have one already, just remember to not use too much force, the top fan pulley nut is 45 foot lbs.
A cordless impact at 1/2” will be fine, 3/8” I’m not sure, so this info would be nice to know.
An electric, corded impact that can be bought for approximately $25 at 100’ lbs rating would work fine also.
The point of the impact wrench is to safely remove and install the top fan pulley nut while minimizing the risk of breaking the fragile fan blades.
Here are some examples, there's one for every budget,
Cheapest,
For the cordless crowd,
For those that have air compressor's, (I have this one, works great-6 yrs now)
2) Have the Tuff Torq PDF’s on the service with you, I have supplied them, they are on the Tuff Torq Parts page, and I will always recommend what they say over anything I say if there is conflict. I don’t think there is any, but just in case, please, always refer to Tuff Torq over an individual such as myself, and please, don’t hesitate to talk with Tuff Torq to confirm or just get extra guidance.
I have found Tuff Torq easy to talk with in my experience, and for those skeptical, GOOD, I am too. If you doubt me and think I’m the kind of person that just gives away a job well done without any work, just read some of my earlier threads or talk with some of the senior members.
By now you should be starting here,
1) Make sure the top is clean, observe the reservoir bottle fluid level, is there any damage to the fan blades, is the belt frayed, etc.
This was mine,
The edges of my belt show wear, I’m replacing it,
The fluid level was fine,
2) Remove fan, belt pulley and 15mm top nut with your impact wrench and socket. (at the low torq settings special impact sockets are not needed), it has standard threads (lefty loosey, righty tighty) While holding the belt tight on the pulley with one hand, remove the nut. The belt held choked tight against the pulley uses the natural grip of the belt to hold the pulley from moving. The impact wrench will loosen the nut by very quick hammer blows and resist loosening by leverage.
Choked belt,
This was the built up dirt between the fan and pulley,
With the above being said, you can use a socket wrench. I would use a helper if possible to hold the belt with 2 hands and have sufficient strength to counter your muscle input, harder but will work fine, fan blades, fan blades, can’t say it enough. If you break them, don’t panic, they are easy to purchase not terribly priced but you will wait with your project.
If you have PB Blaster or WD-40, with care not to spray your belt (remember it’s a listed solvent too) with a straw you could put a dab on the threads to get absorbed first.
3) The belt can be easily removed from the main transaxle pulley, from the side my hand is on. If you are replacing the belt, just cut it,
Stage-4, Continued on the next reply...
What is the K66 Upgrade Kit all about?
Tuff Torq is a global manufacturer of hydraulic, mechanical, electric, and hybrid drivetrain solutions serving the outdoor power equipment industry.
Tuff Torq K66 Parts
Tuff Torq, 7, K664m Hsq T/a. Tuff Torq, 7, K664m Hsq T/a, The OEM Supplier- And World Leader of Precision drive systems for the Lawn & Garden Industry Prices subject to change without notice Pictures shown are for illustration purposes only Please order by part. This K66 Upgrade Kit is not simply a “repair kit” for broken/failed K46′s. We complete replace the K46/K58 with a brand new K66. It is kit designed to bring your tractor up to a level of performance greater than it ever was originally. It will have virtually TWICE the torque to the rear wheels. I think the current price of K66 kit is $1600. If you mow relatively flat lawn, don't pull heavy loads, and keep the cooling fins on the transmission clean, your transmission should last a long time. I found some new K66's for under $500 shipped online. Tuff Torq K66 hydrostatic transmission / transaxle that will replace your weak or worn-out K46 with a K66 which applies to John Deere L130, L120 & others. This is a Do-It-Yourself kit and provides all the parts that you will need, including the required larger wheels. For a person with average skills, about five hours is required.
This K66 Upgrade Kit is not simply a “repair kit” for broken/failed K46′s. We complete replace the K46/K58 with a brand new K66.
It is kit designed to bring your tractor up to a level of performance greater than it ever was originally. It will have virtually TWICE the torque to the rear wheels.
The K66 Upgrade Kit is based upon the concept that you can easily Upgrade your tractor to a higher level of performance and reliability. In addition, you will have a fully serviceable transaxle built to automotive standards.
Instead of an otherwise perfectly good tractor with a bottom-of-the-line marginal transaxle, you will now have a tractor that will perform even better than you expected when you bought it and can handle the heavy-duty jobs that caused your K46 transaxle to fail. The K66 is rated for 'Ground Engagement.'
This kit provides everything you need to complete the upgrade, including the required 1' axle diameter wheel/rims. You simply transfer your current tires over to the new rims. (Some kits use new hubs, rather than rims.)
This is an easy Do-It-Yourself kit. Typically, most people can install the kit in 4-5 hours.
It is basically 'Remove-the-old-parts-and-install-the-new-ones.'
I'm always happy to answer your questions or concerns. Ask Roger a question
What do I get in the Upgrade Kit?
> A brand new Tuff Torq K66 Hydrostatic transaxle.
> A set of brand new OEM rims or hubs. Rims are Powder Coated to match your tractor.
> All the required transaxle installation parts including nuts and bolts ... All neatly bagged and identified.
> A very complete high quality, detailed, fully illustrated, color installation manual that anyone can follow. (You can download a PDF copy of the Installation Manual.)
> Free, unlimited and immediate technical telephone or email support to help you out if you have an unexpected problem.
> FOREVER warranty provided by RJR Tractor.
What additional things you will need?
> Two auto-type jack stands.
> Basic hand tools and a basic set of metric box end wrenches or sockets.
(Possibly an electric hand drill)
> A safe place to work.
> Personal safety items, such as eye protection, gloves, adequate work space and fire extinguisher.
> A 'Helper-Outer.' (i.e., friend or spouse)
What results to expect?
A great tractor that doesn't give up when the going gets tough. It will essentially be changed from a 'Lawn Mower' to a Utility Garden Tractor with about double the torque! It will now be suitable for snow work, hauling trailers and reasonable ground engagement uses.
Your ground speeds will be the same or slightly faster, in both FORWARD and REVERSE.
Frequently Asked Questions (FAQ's)
Q: How hard is the kit to install? I only have a moderate amount of mechanical skills.
A: With over 1300 kits sold, just about all skill levels have installed the kit ... From teen-age kids and 65 yr. old ladies. No one has ever returned a kit because they could not install it.
Q: How long does it take to install?
A: Usually around 4-5 hours, but it can vary depending on your situation.
Q: What happens if I have a problem installing the kit?
A: Pick up the phone and call me. I will personally talk you through the problem. No one has ever failed to install a kit.
Q: Do I need to buy new tires?
A: No, you can use your current tires by transferring to the new rims. As an option, if your tractor has 8' rims and tires, you can request 12' rims be supplied with the kit. (No extra cost)
If you change from 8' to 12' you will gain about ten percent in speed, but will need to purchase new tires. (We do not sell tires, but can advise you where to buy.)
Q: How much is shipping?
A: Shipping in the lower 48 US States is FREE. INTERNATIONAL: We ship to virtually all countries. Shipping cost is actual cost and we give you a credit for the free US shipping. When requesting a shipping quote, we will need your complete shipping address: Street, City and Postal Code.
Q: What is the best way to buy a kit?
A: Most people phone us with a credit card. You also can use PayPal ... just ask.
Tuff Torq K66 Hydrostatic Transmission
Q: What is the warranty?
A: We offer a FOREVER WARRANTY. If a part fails and proves to be defective, regardless of time, we will replace it for free. (Needless to say, 'wear & tear' excepted.)
Q: My current transaxle has failed after only 220 hours. Will the K66 last longer?
A: The K66 is completely serviceable and built to higher standards. It is far more reliable. We can not predict how long your new K66 will last, in your circumstances, however, if serviced as recommended, it likely will last as long as you want to keep the tractor. A rebuild kit is available from Tuff Torq, in case you want to keep your tractor 'forever,'
Q: Will this handle a snow blower?
A: Yes, I have been using a snow blower with my L130/K66 for over seven years. It works great!
Tuff Torq K66i
Q: Can I pull a cart or other implements?
A: Yes, it will handle normal garden tractor implements.