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Showing results for tags 'amc model 20'.
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Greetings - Thank you for adding me to the group! This is my first post. 84 CJ7 full resto. Currently re-building the rear axles (AMC Model 20) with one-piece shaft upgrade. After pressing inner seal and bearing spacer as far into the housing as I can get them, the bearings protrude approx .085" from housing end (.025 more than the max recommended). Recommended protrusion is .020 and .060 to achieve pre-load and eliminate end-play. My question: How much shim is "too much" for this application. Ideally, I'd like to bring the protrusion down to .045", but this would obviously require .040" of shim. Unfortunately, original shim pack was destroyed/lost when salvaging the brake backing plate. Thanks in advance for the help. Zac
My CJ8 is pretty much stock and had not been abused. I have replaced the 4.2 with a fuel injected AMC 360. I grin every time I drive it. The problem with my Jeep's rear-end seems to be axle bearings. They do not seem to make any type of growling noise, but do make a kind of an occasional thunking sound. When it's rolling at speed it is a thunk-------thunk------thunk. Sometimes it goes away or gets louder when I change direction. I did pump some grease into the zirks on the flange that did seem to help once it made its way around the bearing. Seemed to help for maybe 500 miles or so. I am able to hold the wheel at the 6 and 12 o'clock position and get a little movement. What really seems odd is that I do have a fair amount of run out at the axles.