Repair manual

Troubleshooting the Vibration System RD 27
wc_tx000953gb.fm 80
Continued from the previous page.
5. Remove the screws and remove the exciter motor (d) from the drum.
Inspection Perform the following procedure to inspect the exciter motor, coupling, and exciter
shaft for binding.
1. Remove the coupling adapter (e) and inspect it. Replace the coupling if the cou-
pling adapter is damaged.
2. Rotate the exciter shaft (f) by hand. If the exciter shaft binds, disassemble the
drum and inspect the exciter shaft bearings.
3. Rotate the exciter motor shaft by hand. Any binding should be obvious. Replace
the exciter motor if it binds.
Testing Exciter motor function can be tested by running the exciter motor outside of the
machine. Perform the procedure below to test the exciter motor.
1. With the exciter motor removed from the drum, reconnect the hydraulic hoses to
the exciter motor.
2. Check the set screw on the coupling and tighten it if it is loose.
This procedure continues on the next page.