Hi,
we have an 3,5t diesel Toyota forklift (8.000h). The issue with the transmission started as the hose of the transmission cooling line broke and was leaking so much that the oil in the transmission overheated, the result was that that the forklift went slow into the forward gear (sometimes went it rigth away, sometimes it took more than 10 seconds)...the reverse went well.
I took apart the transmission, the seals were all hard, also the plates were worn out, the steel ones were also a little bent. I changed everything, put it together, put new oil in. It was running fine after that (yesterday). Today we were using it a little more so the transmission got really hot and the forklift started to had less power, as you took like 2t little uphill it didnt go.
Did anyone had issue with the cooler, maybe it is clogged?
Thx.
Nejc
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The cooler is visualy looking good, you can see trough it, and we clean the cooler with air regulary.
Ive put the hose that goes from the cooler back to the transmission filter down, and the flow looks also good.
I was thinking to bypass the cooler and put the hose that goes into the cooler directly to the filter, then i could observe if there is a difference in heat build up, if its more or less the same as with cooler, then it must be the coolers fault.
May have a restriction in system that will cause over heating and sluggish pull
I would use a few minutes then test for heat on hoses or fittings etc with the build up of heat it is definitely not getting fluid circulation
Your cooler may be clogged also
Did any one had a simmilar problem? I checked the cooler and its not clogged.
I was observing the temperature and the transmission gets hot till 100-110 degree celsius as for working like 15 minutes (ok, outside is now arround 35-40) as another Toyota forklift (with same engine and transmission) is getting arround 70-80 degree celsius.
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