Yanmar 336d

[yanmars]

I believe my tractor was made about 1982. Its serial number as I recall is 40379. I was told from a reliable source that the serial numbers started at 40000. I do not know how many they made overall.

 

[normde2001]

I have had spindle breakage problems with my 336d. I have a front end loader but do not load it heavilly, it is the factory loader. Also now a front wheel seal is leaking badly. Any of you have any similar problems or corrections. I just overhauled the motor and clutch so I do not want to get rid of it but this has been a problem.

Does your tractor, by chance, have the front wheels reversed for a wider stance, (valve stems to the inside)?A major no-no. Incidentally, compact tractors were never designed to accomodate the added weight of a FEL, (a convenient add-on). Those that survive without problems are barely doing so.

 

[yanmars]

My front tires are not reversed. The loader I believe is a Yanmar factory unit.

 

[normde2001]

My front tires are not reversed. The loader I believe is a Yanmar factory unit.

Still an add-on. Compare to a real front end loader or skid steer, major difference in construction.

 

[deepNdirt]

My front tires are not reversed. The loader I believe is a Yanmar factory unit.

about this loader? how was it bolted onto the tractor? I know when trying to find mounting points for the loader I installed on my Yanmar
I could only find 2 sets of 4 holes on the underside of the transmission, I'm sure these were for hooking upsome sort of belly implements...... most tractors that are readily setup for a loader has bosses built into each side of the tractor, Mine did not!
I had to build up a custom mounting bracket to bolt to the 8 holes found on the underside in order to use a FEL on my tractor, although while building the bracket I also reinforce the tractor as well, so that now the front-mid- rear are all tied together, although this didn't do anything to help with the front spindles and most likely added additional weight to them, I have a Buhler loader takes 5 minute easy quick off and on, I don't plan on keeping the loader connected full time, although the bracket will stay on the tractor, i will only use the loader when necessary, I'm hopping this will ad a little more life to the spindles & bearings,

 

[rdbrumfield]

I had two different 336D tractors with loaders. The first one had the serial no 00029. The powershift lever was on the tranny instead of up on the left side of the steering wheel.
The second one was up there and it had lower gears in 1st. Great tractors, wish I still had the first one. Never had a problem with the front ends and I used the loader heavily. I did not however use ballast in the tires. A tiller or mower out back, that is all.

 

[CSCOTT2]

My right front spindle broke today. I got on the Hoyes site looking for info. I found this site and lo & behold others are having the same problem. What a relief, but it's not looking like it's not going to be a quik fix??

Just chime in w/ your thoughts.

Thanks

 

[rScotty]

.....Incidentally, compact tractors were never designed to accomodate the added weight of a FEL, (a convenient add-on). Those that survive without problems are barely doing so.

I think that your opinion on this is way wrong. Some manufacturers do and some don't. It depends on the manufacturer and how they approached the problem. To Yanmar's credit, when they make a mistake they keep working on it until they get it right...sometimes years after the model is no longer current!!

For the YM336D, Yanmar designed the tractor and the loader together but they completely underestimated just how popular the 336d would be as a construction machine. Even today you rarely see a 336d on a farm; it's usually on a construction site. The OEM loader itself is an industrial type - very heavy construction, industrial cylinders and valves, high oil flow, and frankly the front wheel spindles of the farm tractor weren't up to all the bouncing and abuse of the construction world. It was a conceived as a farm tractor with a loader....not a construction machine. That was Yanmar's mistake - which they compounded by offering the tractor with industrial tires as an option.

Still, the 336 was as close as you could get to a dual purpose small machine with real power, and it became a popular tractor all over the world. It was Yanmar's flagship during the 1980s. Yanmar changed the spindle design several times and by the middle of the ten year model run the changes were good enough that spindles were rarely a problem - but leaky seals still were. They finally got it entirely right in 1989 when they issued Factory Technical Bulletin T-079 announcing an optional heavy duty front drive gear for the 336d, bigger bearings, and a heavier spindle along with the associated redesigned seals, collars, and nuts. It was a complete assembly kit. Hopefully some of those kits are still available. The part number for the kit was P/N 794491-14 160x. At the time - twenty years ago - the price was $1,038.56 for a set to do both sides complete.

That kit was NOT a change to the production tractors...it was an optional kit specifically for using the YM336d in heavy construction type loader service.

It would be nice if some dealer would take a look around and see if those kits are still available and let us all know. Drop me a line too if you do; I wouldn't mind having a spare kit myself just in case....
all the best, rScotty
YM165d, YM336d, JD530, and a Kubota too..

 

[normde2001]

Still an add-on. Compare to a real front end loader or skid steer, major difference in construction.

That's my story and i'm sticking to it.

 

[Iain15]

That's my story and i'm sticking to it.

Guess you've never seen a YFL 1575. It is really a hoss.