Hydraulic Oil Temperature Sender
The hydraulic oil temperature sender is attached to the
hydraulic flush manifold in port TS (Fig. 106).
Testing
3
2
1.
manifold. Disconnect wire harness connector from tem-
perature sender.
Locate oil temperature sender on hydraulic flush
1
2.
temperature sender. Remove sender from manifold.
Thoroughly clean hydraulic flush manifold around
3.
a thermometer and slowly heat the oil (Fig. 107).
Put sensing end of sender in a container of oil with
CAUTION
Figure 106
1.
2.
Hydraulic flush manifold
Oil temperature sender
3.
Fuel water separator
Handle the hot oil with extreme care to prevent
personal injury or fire.
NOTE: Prior to taking resistance readings with a digital
multimeter, short the meter test leads together. The me-
ter will display a small resistance value (usually 0.5
ohms or less). This resistance is due to the internal re-
sistance of the meter and test leads. Subtract this value
fromfromthemeasured valueofthecomponent youare
testing.
4.
(ohms setting) as the oil temperature increases.
Check resistance of the sender with a multimeter
A. Themetershouldindicatefrom11.6to13.5ohms
at 68o F (20o C).
Figure 107
B. Themetershouldindicatefrom2.3to2.5ohmsat
140
o F (60o C).
C. Themetershouldindicate from0.6to0.7ohmsat
212
o F (100o C).
D. Replace sender if specifications are not met.
After allowing the sender to cool,installsender tothe
5.
flush control manifold.
A. Install new O--ring on sender.
B. Install sender into the hydraulic flush manifold.
Torque sender to 12 ft--lb (16.3 N--m).
C. Reconnect harness wire to sender.
6.
Check and fill hydraulic system to proper level.
Groundsmaster 5900/5910
Page 5 -- 59
Electrical System
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