Travel Hi-Speed Control Circuit - Kubota KX91-3a Workshop Manual

WSM Minor Change

(2) Travel hi-speed control circuit

ST
AC
B
OFF
Hi-Low SW
Troubleshooting: Travel hi-speed malfunction
1. Turn the key switch to the ON position to see if 12 V is applied to terminal 2 of the travel hi-speed switch.
2. Press the travel hi-speed switch to see if the 12 V signal comes to terminal 1.
3. Turn on and off the travel hi-speed switch and check the continuity and discontinuity.
4. Check the continuity of the travel hi-speed solenoid coil and measure its resistance.
5. If there is no problem with the above steps, it means the electrical system functions. Now go to the
hydraulic system.
6. Possible troubles with the hydraulic system include stuck solenoid spool, poorly performing pilot pump,
malfunctioning primary relief valve, stuck Hi-Lo selector spool, etc.
2
1
EEPROM
Program
(Meter panel)
II Service Engineering Section
R C
(1)
(1)
(2)
(3)
P1 P2
II-164
(4)
DR