MAINTENANCE
MAINTENANCE
ASSEMBLY
1.Apply grease to the bearing cup bores in the end yoke, the shaft yoke, and the center housing. The grease will make the bearing cups much easier to install.
2.Install the grease fittings in the crosses. Align the grease fitting with the correct trunnions. Look at the old crosses. Figure
MntP-R-0138
3.Remove the bearing cups from the new crosses and apply grease to the needle rollers in the bearing cups. The grease is used to hold the needle rollers in the bearing cups during installation. Use your finger to push the grease into the needle rollers and to push the needles out against the bearing cup. Figure
4.Wrap the shaft in a shop cloth to protect the splines, and mount it in the vise with the yoke up. Make sure the trunnions of the new cross are clean. Install the correct trunnions of the cross through the side of the shaft yoke that has the widest opening. The grease fitting in the cross must be away from the ball in the shaft yoke. Figure
MntP-R-0140
5.Push the cross to one side of the yoke. Use the trunnion as a pilot and push the new bearing cup onto the cross and into the opening in the rear.
6.Push the cross into the bearing cup to keep the needles in the bearing cup while driving the bearing cup. Keep the trunnions of the cross parallel with the openings for the bearing cups. Hit the bearing cup lightly with a hammer. Using the vise, drive the bearing cup into the yoke until the bearing cup is flush with the yoke.
7.Make sure the bearing cup is flat against the bench. Keep the cross in the bearing cup and start the other bearing cup into the yoke. Use a hammer to lightly drive the bearing cup into the yoke just far enough to make sure the bearing cup is straight. If the grease fitting in the yoke is down, support the yoke on a block to prevent damage to the grease fitting.
FN20/FN14 NITRO 02/10 | Maintenance Section |
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