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Message: [QUOTE="TARM, post: 381841, member: 578"] [b]4R100 Homemade Tools[/b] [CENTER][B][SIZE="5"]4R100 Homemade Tools[/SIZE][/B][/CENTER] [B][SIZE="4"][CENTER]Images: 1-9[/CENTER][/SIZE][/B] To rebuild the 4r100 there are a few tools that make life much better. They are very simple tools to fab up your self. To service the reverse clutch piston seals you will need 2- 3 inch or longer 5/16 24 all thread studs. I didn’t have in my supplies and couldn’t find any at my local hardware store so I simple took a couple all thread 5/16 18 bolts. Ran a 5/16 24 thread die over them and cut the heads off. Perfect 5/16 24 studs. To make installing the direct/forward drum a breeze. You can make a simple tool to install them as an assembly. You can purchase this already made from several suppliers. I made mine from a single stick of 1/8 X 1 ¼ mild steel purchased from the local ace hardware. I cut one piece at 17 inches and the other at 8.5 The 17 inches piece has bends at about 5 inches on both ends. The 8.5 inch piece has bends at about 2 inches on each end Hole drilled in the center of both and the ends of the 17 inch cut out to match the notches in the direct drum. Works great! To install the intermediate/ overdrive snap ring you will need a clutch spring compressor. You can buy these from various suppliers. I made mine very simply from a piece of plate aluminum and some tube steel and all thread. I used the pump itself for a pattern to mark out the brace section and drilled the two holes. Again, using the pump itself for a pattern is suggested to get your bolt hole and length dimensions. I then ground the ends of the brace/support to match the contour of the transmissions case itself. Then tapping out the brace for the all thread and welding on a handle. The flat press plate aluminum disc is simple just to 6 7/8 inches. This can be larger also. You could use steel for the press plate. The 4R100 is actually a very easy transmission to rebuild as long as you have a few simple tools to help you. You can purchase them from many suppliers or as here make them easily from some common materials. [SIZE="3"][B][CENTER]4R100 Homemade Tools: 1[/CENTER][/B][/SIZE] [ATTACH=full]90913[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 2[/CENTER][/B][/SIZE] [ATTACH=full]90914[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 3[/CENTER][/B][/SIZE] [ATTACH=full]90915[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 4[/CENTER][/B][/SIZE] [ATTACH=full]90916[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 5[/CENTER][/B][/SIZE] [ATTACH=full]90917[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 6[/CENTER][/B][/SIZE] [ATTACH=full]90918[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 7[/CENTER][/B][/SIZE] [ATTACH=full]90919[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 8[/CENTER][/B][/SIZE] [ATTACH=full]90920[/ATTACH] [SIZE="3"][B][CENTER]4R100 Homemade Tools: 9[/CENTER][/B][/SIZE] [ATTACH=full]90921[/ATTACH] [/QUOTE]