Lubricating The Vibrator Shaft U-Joints And Splines
The vibrator shaft has two universal joints, with four bearings in each, and a splined slip shaft. All eight bearings and the slip shaft must be properly lubricated if trouble is to be avoided.
INADVERTENT ENGAGEMENT OF THE VIBRATORS COULD CAUSE PERSONAL INJURY. SHUT THE ENGINE DOWN AND REMOVE THE KEY FROM THE IGNITION SWITCH.
To ensure proper lubrication of all four bearing assemblies in the universal joints, it is essential that lubricant be added until it appears at all journal cross bearing seals. This assures removal of dirt particles and other contaminants that may find their way into the bearings and indicates that the bearings are fully lubricated.
Do not assume that bearing cavities have been filled with new lubricant unless flow is noticed around all four bearing seals on each cross!
The journal cross seals are designed to relieve. However, if not all the seals "pop" when being lubed, move the vibrator shaft laterally in all four directions and pull or push on the shaft in the direction opposite to the journal cross seal not relieving while lube gun pressure is being applied to the lubrication fitting. An increase in line pressure may also be necessary.
To ensure proper lubrication of the sliding spline section, apply grease gun pressure to the lubrication fitting until lubricant appears at the pressure relief hole in the welch plug at the sleeve end of the spline.
Then cover the pressure relief hole with a finger and continue to apply grease until it appears at the sleeve yoke seal.