Do you know if you can replace the Proportioning Valve on a 1983 CJ7 with a new version from an early 90's Jeep safely and successfully? I am tried of messing with the flap and am considering one of the new Valves but I am not sure it would work.
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Assuming you're talking about the brake system...
The proportioning valve is on the rear brakes only when the vehicle has rear Drum Brakes.
What it does is limits the brake line pressure to the rear brakes during normal stopping. This way the rear brakes don't lock up and cause the vehicle to fish tail or spin.
When you press the brakes harder than normal, the proportioning valve opens more to allow more line pressure so you're able to stop faster.
as simple as this is going to sound its been my exspirence with the cj's they loose ground back at the light housing. try taking off the light and ill bet there will be some rust there. use a small peice of 180 sand paper to scratch off the dibris and reatach and you sould see the lights return. hope this helps and let me know. thanks and good luck.
you place orders or review shots you have the time check tight as if you
connected the wires from the plugs in the right place as this teproduce
shots the firing order is 1-3-4-2 and 1-3 -5-6-2-4
You will have to take the door panel off. Roll the window down/up about 1/2 way. Look at the channel were the bottom of the glass sits. There are most likely a couple of screws, 1 near each end. Loosen them up and remove the glass by holding on to it while lowering the assembly all the way (crank it down. Tilt one end up and lower the other. Glass should come out of the track. Reverse to replace the new glass.
Usually 90 weight gear oil will do, they have new synthetics out now that run hot, and work better, but most transmissions never see an oil change or a drop of oil in their lives. I pulled the plug on my Toyota Land Crusher one day to check it, and nothing came out. Been running dry for years!
Shackles are pretty straight forward. Remove the existing bolts, change the shackles and reverse the procedure to install. Good idea to change the bushings while you're in there if they are at all questionable. It's best to do this with the CJ in the air, supported on the frame and use a floor jack under the axle to lift/lower the spring in/out of the shackle, one side at a time.