Disassembly

Disassembly (Single Cardan Type)
1. Using a soft drift, tap the outside of the bearing cup assembly to loosen snap ring. Tap bearing only hard enough to break assembly away from snap ring.
Remove snap ring from yoke. Turn joint over, tap bearing away from snap ring, then remove opposite snap ring.
Apply alignment marks (1) on the yokes of the universal joint, then remove snap ring.





2. Set the yoke in the arbor press with a piece of tube stock beneath it.
Place a solid plug on the upper bearing assembly and press it through to release the lower bearing assembly.





3. If the bearing assembly will not pull out by hand after pressing, tap the base of the lug near the bearing assembly to dislodge it.
4. To remove the opposite bearing, turn the yoke over and straighten the spider in the open hole. Then carefully press on the end of the spider so the remaining bearing moves straight out of the bearing spider hole. If the spider or bearing are cocked, the bearing will score the walls of the spider hole and ruin the yoke.
5. Repeat this procedure on the remaining bearing to remove the spider from the yoke.
6. Make sure of proper position for reinstallation by applying setting marks, then remove spider.

Spider pin for wear





Spider pin should be smooth and free from fretting or galling. Visible signs of needle presence is normal, but wear should not be felt.

Propeller shaft runout
Support the propeller shaft on V-blocks (2) and check for runout by holding the probe of a dial indicator (1) in contact with the shaft.





Static runout limit:
- 0.13 mm (0.005 inch)
TIR on the neck of the slip tube shaft (with a boot).
- 0.25 mm (0.010 inch)
TIR on the ends of the tubing 3 inch from the welds.
- 0.38 mm (0.015 inch)
TIR at the linear center of the tube.
- 0.38 mm (0.015 inch)
TIR for the full length of tube with 30" or less of tubing. (TIR: Total Indicator Reading)

Spline
The nylon-coated spline should be free from nicks and dings and the underlying steel spline should not be visible.
After cleaning the nylon coating spline, the coating should exhibit only a slight indication of wear.
Grease volume is approximately 10 grams of grease in total. Grease should be evenly applied to both the female and the male slip splines using a small brush. After assembly of the slip joint, the sliding joint should be fully worked from the full collapsed to the full extended position.

Play in the universal joint





Limit: Less than 0.15 mm (0.006 inch)

Preload of the universal joint





Preload should be 0 to 24.9 kg (0 to 11.3 lb). Joints should rotate smoothly and freely and should exhibit no rough or ratchety movement.

Boot
Check the boot for crack or damage. If necessary, replace the boot.
If abnormal condition are found on the boot, inspect the grease for mixing of foreign material.
If the grease is good condition, and slip joint works well, replace the boot, replenish grease, and reassemble the slip joint.
If the foreign material is found in the grease, check the spline for wear and damage.