I have a hydrostatic transmission, with a cold start issue. The hydrostat is a pump/motor combo with a intermediate high pressure accumulator and low pressure reservoir. The hydraulic fluid viscosity at cold temperature is acceptable (no derate), but the system pressure does not build for...
I have a mobile application of a bent axis pump. Can someone tell me what parameters (and based on what equations) to accelerate in testing to confirm pump life.
I have a automatic transmission control application with sliding aluminum spool valves running in a aluminum valve body. I am having difficulty with controlling the corner break in the spool valve, after the Hard coat anodizing process. The uneven corner profile creates a space for debris to...
I have a 4T65E transmission in my 2000 Chevy Venture Extended Van with about 100K miles. Recently it has developed a shudder, at moderate or aggressive launch from Stop light. The shudder happens between 5 and 15 mph (so no TCC related issue?). Any pointers to root causes...?
I understand that the transfer gear can be a big source of noise in a automotive transmission. In a new test transmission, I have improved the gear manufacturing accuracy to the point that a 1 or 2 micron difference in gear geometry is the difference between the noisy and the quiet gears...
In the camshaft drive gear of the 2005 toyota highlander engine, there is a circular cylinder attached to the camshaft drive gear. It is bolted onto the drive gear, and it has a magpickup on one side. I do not have the engine teardown manual. Would anyone know what it is?
My guess is that...
