Nexen MBU-1125 937300 - Manual (Page 12)

12 FORM NO. L-21087-C-1010
TROUBLESHOOTING
Ball
Bearings
O-ring
Seals
Piston
Ball
Bearing
Hub
Ball
Bearing
Friction
Disc
Friction
Facings
Piston
O-ring
Seals
Disc
Journal
Friction
Facing
Disc
Journal
Ball
Bearings
FIGURE 9
Compression
Spring
Ball
Bearings
Compression
Springs
MODEL SYMPTOM PROBABLE CAUSE SOLUTION
MIU (Modular Input Unit) Bearing noise. Damaged Ball Bearings. Replace the Ball Bearings.
MDU (Modular Drive Unit)
Failure to
engage.
Leaking O-ring Seals. Replace the O-ring Seals.
Lack of lubrication on the Hub Spline. Lubricate the Hub spline with Never-Seez®.
Damaged Ball Bearings. Replace the Ball Bearings.
Improper air pressure settings or faulty
controls.
Adjust the air pressure setting or replace
the controls.
Failure to
disengage.
Lack of lubrication on the Hub spline. Lubricate the Hub spline with Never-Seez®.
Damaged Ball Bearings. Replace the Ball Bearings.
Broken or damaged Spring. Replace the Spring.
MBU (Modular Brake Unit)
Failure to
engage.
Leaking O-ring Seals. Replace the O-ring Seals.
Damaged Ball Bearings. Replace the Ball Bearings.
Improper air pressure settings or faulty
controls.
Adjust the air pressure setting or replace
the controls.
Worn or contaminated Friction Facings. Replace the Friction Facings.
Failure to
disengage.
Lack of lubrication on the Hub spline. Lubricate the Hub spline with Never-Seez®.
Damaged Ball Bearings. Replace the Ball Bearings.
Broken or damaged Springs. Replace the Springs.
MOU (Modular Output Unit)
Failure to
engage.
Damaged Ball Bearings. Replace the Ball Bearings.
Worn or contaminated Friction Facings. Replace the Friction Facings.