10
FORM NO. L-21174-E-1209
Old Rotary Seal Design
New Rotary Seal with Flexible Lip Design
FIGURE 6
TROUBLESHOOTING
SYMPTOM
PROBABLE CAUSE
SOLUTION
Failure to Engage
Insufficient air pressure to the Torque
Limiter.
Check the air lines for leaks and replace damaged
air lines.
Damaged or leaking O-ring Seals.
Replace the O-ring Seals.
Driven load is too light.
Back off air pressure and use shielded bearings.
Failure to Disengage
Broken Compression Springs.
Replace the Compression Springs.
Air not exhausting from the Quick Exhaust
Shuttle Valve.
Replace the Quick Exhaust Shuttle Valve.
Ratcheting
Insufficient air pressure to the Torque
Limiter.
Check the air lines for leaks and replace damaged
air lines.
Damaged or leaking O-ring Seals.
Replace the O-ring Seals.
Nuisance Tripping
Proximity Sensor not properly adjusted.
Adjust the Proximity Sensor (See
ADJUSTMENTS.)
Hub
Ball Seat
(included in
Drive Flange
Assembly)
Drive Flange
Assembly
Ball (included
in Drive Flange
Assembly)
Ball
Bearing
Ball
Bearings
Backing
Plate
Drive Disc
Compression
Spring
Ball
Bearing
Piston
O-ring
Seal
Backup
Ring
Seal
Dowel Pin
Proximity
Sensor
Mounting
Bracket
Back-Up
Ring Seal
O-ring
Seal
Ball
Bearing
NOTE: Rotary seal style/location has changed. All
components are identical between models other
than the rotary seal and components it comes in
contact with. The TL20A-E continues to use the
Old rotary seal style and location.
