RD 12 / RD 12A
Vibration System and Steering
wc_tx000668gb.fm
59
Continued from the previous page.
5. Turn on the vibration and measure the relief and operating pressures. The relief
pressure is the pressure registered on the gauge as soon as the vibration is
turned on. The system will then settle into operating pressure. Record these two
pressures.
6. Shut down the machine.
Compare the results from operating pressure, pump relief pressure, and exciter
speed with the chart below.
N = Normal, L = Low, H = High
If the exciter is binding or causing high operating pressures, perform the following:
1. Disconnect and remove the exciter motor
(c)
from the housing.
2. Turn the motor shaft and exciter shaft by hand and check that they both turn
freely.
3. If either component does not turn freely, it has failed; replace it.
The vibration system has now been checked for poor vibration.
Operating
Pressure
Pump Relief
Pressure
Exciter
Speed
Probable Cause
N
N
N
System OK
H
N
N or L
Exciter bearings or motor binding
N or L
N
L
Exciter motor worn
L
L
L
Exciter pump damaged or worn, relief
valve defective, or needs adjusting
wc_gr004143
c
Summary of Contents for RD 12A
Page 1: ...5000192242 02 0912 5 0 0 0 1 9 2 2 4 2 Repair Manual Roller RD 12 EN...
Page 15: ...RD 12 RD 12A Safety Information wc_si000302gb fm 15 1 4 Label Locations X FF...
Page 21: ...RD 12 RD 12A Safety Information wc_si000302gb fm 21 Notes...
Page 25: ...RD 12 RD 12A Operation wc_tx000865gb fm 25 53 47 54 61 50 62 55 wc_gr004114 56...
Page 29: ...RD 12 RD 12A Operation wc_tx000865gb fm 29 wc_gr002951 N F R 55 42 44 54 10 15...
Page 119: ...RD 12 RD 12A Disassembly Assembly wc_tx000671gb fm 119...
Page 120: ...Schematics RD 12 RD 12A wc_tx001073gb fm 120 10 Schematics 10 1 Hydraulic Schematic...
Page 122: ...Schematics RD 12 RD 12A wc_tx001073gb fm 122 10 4 Electrical Schematic A RD 12A...
Page 124: ...Schematics RD 12 RD 12A wc_tx001073gb fm 124 10 6 Electrical Schematic B RD 12A...
Page 126: ...Schematics RD 12 RD 12A wc_tx001073gb fm 126 10 8 Electrical Schematic RD 12...
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