Cub Cadet SLTX1000 Series User Manual
Page 36
LTX Tractors
30
NOTE: A voltage spike over 18.5vdc +/- 1.2v @70°F will cause the voltage regulator to shut down. The regula-
tor must be disconnected, then re-connected to reset it.
NOTE: A sustained voltage over 25 volts will damage the EPS module.
IMPORTANT: Loose battery cables or disconnecting jumper cables while the engine is running will create a
high voltage spike that will damage the EPS system.
NOTE: If the results are within the specified ranges or if the amperage draw is higher then expected, check for
a mechanical bind by:
19.
Remove the EPS assembly.
20.
Check the steering shaft bushings.
NOTE: Cocked steering shaft bushing will bind the steering shaft, mimicking a bad EPS. Fix the bushings
before condemning the EPS.
21.
If nothing is in a bind, replace the EPS assembly.
Troubleshooting the EPS (with the 725-05419 EPS Tester)
To troubleshoot the EPS using the 725-05419 EPS Tester:
1.
Connect the red lead of the EPS Tester to the posi-
tive post of the battery.
2.
Connect the black lead of the EPS Tester to the
negative post of the battery.
NOTE: A green LED and a blue LED should be illu-
minated. If they are not, the tester is mal-
functioning.
NOTE: If a red LED illuminates when the tester is
connected to the EPS, the EPS has a short
and has blown the fuse on the tester.
3.
Disconnect the EPS harness connector underneath
the battery.
4.
Plug the EPS Tester into the connector on the EPS
assembly.
NOTE: The 725-05419 EPS Tester comes with a jumper harness, to be used on tractors with the battery under
the seat, so that the tester can reach the EPS assembly.
5.
Start the engine.
6.
Operate the steering wheel.
•
If the steering wheel turns easily, the EPS is not the issue. Refer to the previous section to check the trac-
tor’s electrical system.
•
If the steering wheel is still hard to turn:
a.
Remove the EPS assembly.
b.
Reconnect the EPS tester to the EPS assembly by following the procedures described in the EPS
removal section of this chapter.
c.
Rotate the input shaft of the torsion coupler. If it rotates with minimal effort the EPS is working.
d.
Check for a mechanical bind in the steering system. If it’s hard to turn, the EPS is faulty.
Figure 3B.11
Green LED
Blue LED