I've begun using a combination of a Fram XG7317 filter on the transmission cooler return line, and a Parker 3-micron hydraulic filter and head on the transmission cooler output.
The Parker filter is on the transmission output because it's filter mount has 4 1/8" NPT fittings thatI'm going to be using for transmission temperature readings, as well as placement of a pressure differential gauge. Don't want to change a filter if it doesn't need it yet. I don't have to worry about material falling out of the transmission cooler because this transmission has a factory spin-on filter inside of the transmission pan that is fed by the transmission cooler return line.
The factory spin-on filter inside the pan is rumored to be about 60-80 microns efficient. It's a total rock-catcher. Better rock-catcher than the pan filter, but still a rock catcher. I discovered through some research that this filter is a dimensional dead ringer for PH7317. Similar gasket diameter, similar height, similar case diameter, same threads.
There is actually no rocket science going on where the filter system is concerned. Transmission cooler line comes to the side of the transmission case, and goes straight through to the filter, and then to the return outlet into the pan. I really couldn't see what the heck the difference would be if I were to have an external filter head on the return with a 7317, or just having screwed in inside of the pan. 7317 has ample flow for a transmission, and the fluid is thinner and cleaner than the engine oil it's used to dealing with, especially with a 3-micron filter taking point on cleaning the oil before it reaches it.
I just screwed the factory filter, unscrewed the plastic filter boss from it, and installed it in the XG7317 (boss is with filter, not filter mount). I taped off the top of the XG7317, took 45 seconds to remove the external paint and grip coating with a wire wheel, cleaned it, removed the tape, and installed in place of the factory spin-on filter.
Parker recommends changing the hydraulic filter at 50 hours when being added to a system that has never had one, and then every 250 hours after that. I'll be doing a UOA at 50 hours to see just how clean it's keeping the transmission fluid.
While I was at it, I also flushed the whole transmission and added a Dorman transmission pan with a drain plug and placed 3 95 lb. donut magnets in the pan to take care of any ferrous material.
Shifting is quite a bit more civilized with the fresh fluid. Can't wait for the results.
The Parker filter is on the transmission output because it's filter mount has 4 1/8" NPT fittings thatI'm going to be using for transmission temperature readings, as well as placement of a pressure differential gauge. Don't want to change a filter if it doesn't need it yet. I don't have to worry about material falling out of the transmission cooler because this transmission has a factory spin-on filter inside of the transmission pan that is fed by the transmission cooler return line.
The factory spin-on filter inside the pan is rumored to be about 60-80 microns efficient. It's a total rock-catcher. Better rock-catcher than the pan filter, but still a rock catcher. I discovered through some research that this filter is a dimensional dead ringer for PH7317. Similar gasket diameter, similar height, similar case diameter, same threads.
There is actually no rocket science going on where the filter system is concerned. Transmission cooler line comes to the side of the transmission case, and goes straight through to the filter, and then to the return outlet into the pan. I really couldn't see what the heck the difference would be if I were to have an external filter head on the return with a 7317, or just having screwed in inside of the pan. 7317 has ample flow for a transmission, and the fluid is thinner and cleaner than the engine oil it's used to dealing with, especially with a 3-micron filter taking point on cleaning the oil before it reaches it.
I just screwed the factory filter, unscrewed the plastic filter boss from it, and installed it in the XG7317 (boss is with filter, not filter mount). I taped off the top of the XG7317, took 45 seconds to remove the external paint and grip coating with a wire wheel, cleaned it, removed the tape, and installed in place of the factory spin-on filter.
Parker recommends changing the hydraulic filter at 50 hours when being added to a system that has never had one, and then every 250 hours after that. I'll be doing a UOA at 50 hours to see just how clean it's keeping the transmission fluid.
While I was at it, I also flushed the whole transmission and added a Dorman transmission pan with a drain plug and placed 3 95 lb. donut magnets in the pan to take care of any ferrous material.
Shifting is quite a bit more civilized with the fresh fluid. Can't wait for the results.