If operating in a cold environment, slip spline assembly should be activated by driving vehicle to
displace grease before it can stiffen. Otherwise, slip yoke plug may be forced out due to hydraulic
pressure. This causes loss of grease and allows abrasive contaminants to enter slip spline. Failure to
comply may result in damage to equipment.
If releasing tension fails to clear grease passage, dismantle U-joint to determine cause of blockage.
(10) Lubricate drive shaft yoke and slip spline.
(11) Apply grease until lubricant appears at welch plug pressure relief hole. Welch plug is located at slip yoke end of
(12) Cover pressure relief hole with finger and continue to apply pressure until grease appears at slip yoke seal. This
will ensure complete lubrication of spline.
Removal procedures are the same for all drive shaft U-joints.
Remove self-locking nuts and bolts on drive shaft to axle flange. Discard self-locking nuts.
Support drive shaft and remove eight self-locking nuts and bolts on drive shaft to gear box flange. Discard
Remove drive shaft.