Toro Groundsmaster 5900 Series Service Manual page 376

Testing (continued)
Electrical System: Component Testing
Note: Prior to taking resistance readings with a digital multimeter, short the
meter test leads together. The meter will display a small resistance value
(usually 0.5 ohms or less). This resistance is due to the internal resistance
of the meter and test leads. Subtract this value from the measured value
of the component you are testing.
4. Check resistance of the sender with a multimeter (ohms setting) as the oil
temperature increases.
A. The meter should indicate from 11.6 to 13.5 kilohms at 20 ºC (68 ºF).
B. The meter should indicate from 2.3 to 2.5 kilohms at 60 ºC (140 ºF).
C. The meter should indicate from 605 to 669 ohms at 100 ºC (212 ºF).
D. Replace sender if specifications are not met.
5. Install sender in the traction control manifold.
A. Install new O−ring on sender.
B. Install sender into the hydraulic manifold. Tighten sender to 14 to 16
N·m (10 to 12 ft−lb).
C. Reconnect harness wire to sender.
6. Check and fill hydraulic system to proper level.
Page 6–114 Groundsmaster ® 5900 & 5910
16227SL Rev B