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As I recall, the “doughnut” was about 3/8″ thick. I’ll get the ID when I get back over to the shop.
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That’s very good to know, because the last pair of linings I saw didn’t have the bolt-on ends. In fact, they were welded instead of riveted. Nice pics. Maybe a come-a-long attached to the ROPS would have been an alternative to the pry bar.
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Here is a few pics relating to the thermostat issue. The Stant thermostat is the same as the NAPA #133 thermostat NOT the OEM. Hope I didn’t confuse you.
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Tim wrote:
1). how do you trouble shoot and know if you have frozen /stuck steering clutches on one side vs an actual brake adjustment issue?
This isn’t in the manual, it’s something that you just acquire a feel for, but generally if you are pushing a half full blade straight on (not digging), both feet off the pedals, and you depress one pedal about one-quarter to halfway, the machine should begin to turn in that direction. If it does not, and the adjustment is correct, then you have a sticking/dragging steering clutch. Further application of the pedal should apply the brake and the machine will begin to turn sharply.
2) so I use a Napa 133 thermostat and OEM donunt from thermostat but not OEM thermostat?
To clarify: Neither the NAPA or OEM thermostat come with the “doughnut” this is something that you have make or procure yourself. I have an O-ring making kit, I made my own. You can run without it but your engine will not come up to operating temperature, and that’s not good for the engine, and it wastes fuel.
Here is a pic of that tool for adjusting the pedals so they are correct with the deck plate openings.
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Forgot to mention that you can get the OEM thermostats from almost any of the supporting dealers of CTOA. Any of the TY395 thermostats will fit that are used on a lot of Jinma tractors using the same engine.
http://www.circlegtractorparts.com/cooling-system/thermostat-for-ty395-engines/
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Personally, I have found the Yuchai linkage problematic in that it’s very difficult sometimes to get the sequence right, with there not being enough travel adjustment to completely release the clutch before the brake applies. That’s why I completely redesigned the linkage on my machine. You may not be up to doing that, but if you’re interested there are pics on my FB page. I also made a “T” tool that bolts in place of the deck plates so you can adjust the pedals equally from side to side. I’ll post a pic of it later. You may want to make one, very handy.
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The problem with the right side could be that there are some steering clutch plates rusted/frozen and are not disengaging completely (this is not uncommon with machines that have been idle for long periods and stored outside uncovered). The steering clutches are spring actuated, and when you depress the pedal for the first couple of inches it compresses the springs and lets the clutch plates and discs turn independently of each other. If there are some that are hanging up, that will create a drag that the brake might not overcome, and yes you’ll get some squealing because they are dry clutches. Another reason the brake isn’t working correctly, as stated before, is that the lining has become saturated with oil.
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Thermostat: Yes, the NAPA #133 is the correct one that matches the OEM perfectly except that you have to trim about 1/32″ off the lip. I did this by simply chucking up in a lathe but you can grind it off just as well. You will have to make your own rubber doughnut from 3/8″ thick O-ring stock or whatever you can find that will fit. The reason for this is that they are not shipped from the factory with it. Don’t know why, but without the doughnut the thermostat is always in bypass and the engine never reaches operating temperature. You can also install the doughnut on the OEM 140° thermostat.
The large plugs under the steering compartments are cast zinc (pot metal) and are straight threaded.
Applying the right brake should not lock both tracks. The sequence is that the steering clutch is released before the brake is applied. This is according to pedal travel. This is detailed in the manual. Do you have the operators manual?
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Understand about the temperature, can’t seem to find the link for aftermarket thermostats and the picture of that rubber donut. What will fit a TY395 EPA injector for a coolant thermostat, gasket etc?
I used a NAPA thermostat, but I don’t have the part number in front of me. I’ll get that for you later today.
will check drain plugs under brake assembly for oiL, and further adjust clutch release need to see the blade to check for blade level etc, will try 16 mm coarse just hard to find that size metric Like the grade indicator idea, what is a safe number not to exceed on a slope sideways?
I wouldn’t attempt any side slope dozing unless you have some experience doing it. Make sure your tracks are correctly tensioned and snugged up. Some people have lost tracks side sloping, and invariably it’s the downslope side so it will pretty much ruin your day. As far as slope limitations go, I don’t know, but I’ve had mine to around 12° and it was beginning to feel tender.
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