Re: I just bought a 37 115 C

Posted by Owen_Dyneto On 2010/2/28 9:44:13

Richard, if the transmission gear oil has really thickened to the point where it won't flow, just adding something like kerosene (which is compatible diluent) thru the filler port without the ability to stir it around will not thin it and help it drain. My best suggestion would be to remove the transmission from the car for a thorough cleaning; second best, pull the floor boards and the transmission cover, scoop out as much as you can and then go with kerosene and a stiff parts-cleaning brush and try to work all the way around and as best you can towards the bottom, inspection at that point should show you why the shifter is stuck. Drain and repeat several times. I'm not familiar with the internals of the junior transmission but the seniors have troughs cast into the sides which collect gear oil spray and direct it by gravity to the front and rear bearings - these troughs and drip points MUST be cleared.

If the transmission is that bad, I can only guess what the differential and steering gear box must be like. If that's the case, best bet is to remove the differential to clean and inspect the bearings and ring/pinion gear. The steering gear box will be more difficult as it has no drain.

Good luck and keep us posted on your progress.