New Holland WorkMaster 50 Service Manual page 204

4. Seat the retaining rings (8), figure 1, on the front axle
PTO shaft and 4WD shaft.
5. Seat the retaining ring (1) on the PTO shaft of the drop
box.
6. Slide the spline coupler (1) toward the drop box.
7. Measure the gap (2) on the 4WD shaft between retain-
ing ring groove and sleeve face.
8. Slide the spline coupler (1) away from the drop box.
9. Insert suitable shim or combination of shims (9), figure
1, on the drop box PTO shaft to make up for the gap.
Maintain a free play of 0.3 mm.
10. Slide the spline coupler toward the drop box and seat
the retaining ring (3), figure 1.
Four-Wheel Drive (4WD) system - Drive shaft
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