7
FORM NO. L-20328-B-1112
PARTS REPLACEMENT–FRICTION FACINGS
FMCBE REMOVAL
1. Remove the Plug (Item 32) and loosen the Set Screw
(Item 31) securing the FMCBE to the motor or Input
Unit (See Figure 7).
2. Remove the socket head cap screws and lock
washers that secure the FMCBE to the motor or
Input Unit; then, slide the motor or Input Unit off the
FMCBE.
CAUTION
Unscrewing the Bar (Item 38) more than one-half
turn will damage the bar.
3. Slowly unscrew the Bar (Item 38) one-half turn to
release the Key (Item 25).
4. Remove the FMCBE from the gear reducer.
NOTE
If an Input Unit is installed on the FMCBE, it must
be removed before servicing the FMCBE.
1. Remove the four Socket Head Cap Screws (Item
13) and separate the two halves of the FMCBE (See
Figure 8).
13
FIGURE 8
Plug
(Item 32)
Set Screw
(Item 31)
Key
(Item 25)
Bar
(Item 38)
FIGURE 7
SYMPTOM
PROBABLE CAUSE
SOLUTION
Failure to engage.
Air not getting to the FMCBE due to a control valve
malfunction.
Check for a control valve malfunction or low
air pressure and replace the control valve if
necessary.
Air leaks around the O-ring Seals.
Replace the O-ring Seals.
Failure to disengage.
Unexhausted air due to a control valve malfunction.
Check for a control valve malfunction and
replace the control valve if necessary.
Loss of torque.
Air leaks around the O-ring Seals.
Replace the O-ring Seals.
Worn or dirty Friction Facings.
Replace the Friction Facings.
