| Re: C4 Tech FAQ |
Subject: Re: C4 Tech FAQ by Slalom4me on 2008/3/12 0:19:14 BTW, C4boy created a post called 'Half-shaft U-Joints: Everything You Always Wanted To Know' In it he mentions 3-70-48X (update) This is the strap kit part # for the axle shaft u-joints. You get 2 straps and 4 bolts in a kit and the cost should be around $10 or less. The bolts are metric. The thread diameter of the strap bolt is 8mm x 1.0 pitch. The bolt is 19.05 mm long, Grade 8 steel. Strap bolt holes are 1.806" center to center. C4 axle u-joint strap bolts are NOT american thread. It would be useful to confirm this and add the companion strap kit # for the driveshaft u-joints Also, mention should be made of GM's practice (from FSM) of marking the orientation of the shaft to the yoke From the prop shaft section in my manual for an '89, the manual states that there is a black spot on the shaft and a yellow spot on the yoke and goes on to say: "ALIGN THE BLACK PAINT SPOT 180 DEGREES OPPOSITE THE YELLOW PAINT SPOT (my emphasis) on the pinion yoke. This aligns the light side of the propeller shaft with the heavy side of the pinion yoke, minimizing residual unbalance. Prior to removal, be sure to check for the presence of the paint spots..." If these remarks also apply to whatever your C4 vintage is, hopefully the spots might still be visible - be careful when cleaning and maybe you will get lucky. If you don't find their marks, make your own but use other colours. . |
