Diagnostics; Overheating; Oil Blowing Out Of Breather; Oil Seal Leaks - Meritor T-2111 Series Maintenance Manual

Section 7

Diagnostics

Diagnostics:T-2111 Series Transfer Cases
Problem

Overheating

Oil blowing out of breather

Oil seal leaks

Noise / Vibration
Declutch indicator light not functioning

Premature gear/bearing wear

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Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • parts@eprogear.com
Possible Cause
1. Excess lube quantity
2. Incorrect lube viscosity
3. Excessive speed (RPM)
4. Excessive axle ratio (Tire size mismatch)
1. Excessive speed (RPM)
2. Excess lube quantity
3. Unusual mounting orientation
4. Incorrect lube
5. Incorrect breather location
1. Seals damaged at installation
2. Yoke journal surface defect or grind lead
3. Seals damaged from overheating
1. Excessive driveline angles/balance/wear
2. T-Case mounting location/method
3. Engine torsional acceleration not damped
4. Excessive T-case bearing end play
5. Operating on good surface with declutch engaged
1. Damaged switch or declutch unit
2. Inadequate air pressure
3. Defective piston seal
4. Bulb burned out
1. Contaminated or inadequate quantity of lube
2. Incorrect bearing adjustment
3. Excessive axle ratio/tire size mismatch
4. Excessive PD or front declutch lock up