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Permalube™ Drivelines
Inspection and Maintenance
Table A: RPL Series Permalube and Wing-Style Permalube Driveline Inspection Intervals and Procedures
Mileage Intervals
At initial inspection, or no more than
2,000 miles (3,200 km)
Every 25,000 miles (40,000 km)
Every 150,000 miles (240,000 km)
(16579)
Printed in USA
Procedures
Verify that all bolts are tightened as follows.
• Universal joint-to-end yoke bolts to 115-135 lb-ft (155-183 Nm)
• Flange-to-fl ange bolts to 133-163 lb-ft (180-220 Nm)
If you observe any of the following conditions, remove and replace components as needed.
1.
Inspect all universal joints for grease purging.
• If a universal joint shows normal grease purging: Do not replace the universal joint.
2.
Check for excessive looseness across the ends of the universal joint bearing cup assemblies and
trunnions.
• Grip driveline near the INBOARD yoke with both hands.
• Try to move the yoke VERTICALLY and HORIZONTALLY. Movement in the universal joint
relative to the INBOARD or OUTBOARD yokes must not exceed 0.006-inch (0.152 mm).
Figure 4.4.
3.
Inspect the slip yoke spline seal for grease leakage or seal damage.
4.
Inspect for missing balance weights, damaged tubing, or a missing welch plug at the slip yoke.
In addition to the 25,000-mile (40,000 km) requirements:
Use the following steps to inspect the slip splines for wear (backlash) and for radial looseness between
the slip yoke and the tube shaft.
1.
Ensure that the vehicle is on a level surface with its wheels on the ground. For single driveline
systems, check the slip yoke for movement with the driveline installed. For multiple driveline
systems, remove the slip yoke assembly from the vehicle and check for movement.
2.
Firmly mount a dial indicator with a magnetic base onto the slip yoke barrel next to the dust
seal. Figure 4.12. You do not want the dial indicator to move when you check the slip yoke for
looseness, or the measurement will not be correct.
3.
Extend the dial indicator arm from the base, so that it contacts the neck of the spline plug within
3/4-inch (19.05 mm) from the dust seal. Figure 4.12.
4.
With your hands near the center of the driveline, move the slip yoke UP-AND-DOWN. Check the
dial indicator measurement. Movement between the spline plug and slip yoke must not exceed
0.017-inch (0.432 mm). Figure 4.13.
• If movement exceeds 0.017-inch (0.432 mm): Components are worn or damaged. Replace
as required.
5.
Use a dial indicator to examine the slip yoke spline for excessive radial movement. Radial
movement betweenthe slip yoke and the tube shaft must not exceed 0.017-inch (0.432 mm).
• If the radial movement exceeds 0.017-inch (0.432 mm): Replace the slip yoke and the
tube shaft.
Copyright Meritor, Inc., 2021
4
Inspection
MM-96147 / Revised 03-21
Page 15
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