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Author
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Topic: C4 Intermediate Servo Mod?
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wildfire466
unregistered
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posted 04-21-2004 01:34 AM
Anyone removed the top O'ring seal and mod the fluid return hole?Looking for help on this mod or is it worth while doing? Thanks,
Les ------------------
http://www.geocities.com/wildfire1mustang/
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 04-21-2004 08:17 AM
I've have done it on a few R servos. It does work well, but I'm not sure it's nessessary. It should work well in stock form too. Servos and intermesdiate bands are rearly a failure on C4s. Typically the direct clutches will give out first.------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 351C 4V
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wildfire466
unregistered
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posted 04-21-2004 10:44 AM
I see it's easy to remove the oring, but how is the case pluged and what has to be done to the piston to relieve the oil? I think it needs a notch but don't know where or how?Thanks,
Les ------------------
http://www.geocities.com/wildfire1mustang/
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 04-21-2004 01:14 PM
You will remove the small o-ring and then cut or grind a notch in 3 places around that o-ring groove so fluid can pass around the piston easily. If you do this, keep in mind that you can not return it to original again. Next, there is a oil return hole in the trans case. It is about 5/16" diameter or a bit bigger. Tap it for a 1/8 pipe thread and plug it with a allen socket pipe plug. Next, I take an 8/32 tap and thread the small bleed hole in the servo cover. Put a small 8/32 set screw in the hole with locktite to seal it. This will help keep the fluid pressure from the servo gasket. That's it. This mod does work and I have had no problems with mine, but as I said before, it's really not nessessary for good performance if you have a good servo anyway. Some trans manufacturers do the mod and some don't. ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 351C 4V
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