Q: How to perform a Universal Joint repair for Chevrolet Caprice?
A: To perform a Cleveland type joint repair, start by cleaning the ends of the bearings on the yokes and removing the snap-rings using snap-ring pliers. If the snap-rings are tight, tap the bearing cup to relieve pressure. Support the trunnion yoke and press out the trunnion using a vise and a socket. Grip the bearing cup in a vise to fully remove it, and repeat for the remaining cups. Ensure the vent hole on the slip yoke is not blocked. Use a universal joint repair kit to replace the trunnion, seals, bearings, cups, and snap-rings. Begin reassembly by packing lubricant into the trunnion ends. Place the dust seals correctly on the trunnion and insert one bearing cup into the yoke, followed by needle rollers. Insert the trunnion into the cup and stick needle bearings into the opposite cup. Press both cups fully home in the vise and install new snap-rings. Repeat for the other bearing cups. If the bearing cup housings are excessively worn, replace the entire driveshaft assembly. Always check the wear in the sliding sleeve splines and replace if necessary. For a Saginaw type joint, follow a similar procedure, removing snap-rings if necessary and removing plastic material from the yoke after removing the trunnion. Reassembly is the same, with snap-rings installed inside the yoke. If needed, strike the yoke with a hammer to assist in seating.
Q: What are the symptoms and tests for identifying wear in Universal Joint on Chevrolet Caprice?
A: Wear in needle roller bearings can be identified by various symptoms such as vibration in the transmission, clonks during drive engagement, metallic squeaking, and eventually grating and shrieking sounds as the bearings deteriorate. To check for wear, one can try turning the shaft with one hand while holding the rear axle flange or front half coupling with the other hand to detect any movement between the shaft and the couplings. Another test involves attempting to lift the shaft and observing any movement between the yokes of the joints. If significant wear is observed, it is recommended to either replace the universal joints or opt for a new driveshaft assembly.