SkyTrak 6042 Service Manual - Manual (Page 500)

Electrical System
9.130 Model 6042 Legacy Origin 7/02
9.15.14 Fuel Level Indicator and
Fuel Level Sender
The fuel level indicator (Fig. 9-127, 1) can be found on
the operator’s instrument cluster.
Figure 9-127 Fuel Level Indicator
The fuel level indicator (Fig. 9-127, 1) works in
conjunction with the fuel level sender (Fig. 9-128, 1). The
submerged, coil-type fuel level sender is secured to the
fuel tank (2) and is connected to the operator’s instrument
cluster via the engine wiring harness, bulkhead connector
and cab wiring harness.
The operator’s instrument cluster fuel level indicator
(Fig. 9 -127, 1) shows the level of fuel remaining in the
fuel tank. The fuel level sender wiring harness connector
can be accessed from the top of the fuel tank.
The fuel level sender (Fig. 9-128, 1) consists of a
resistance, float-type fuel level sender mounted in the top
of the fuel tank (2) and the wiring (3) connecting it with the
fuel indicator in the operator’s instrument cluster.
The resistance of the fuel sender is 31 ohms for a full tank
of fuel, 101 ohms for 1/2 tank and 255 ohms for an empty
tank. The fuel level indicator gauge in the operator’s
instrument cluster receives a signal from the fuel level
float sender corresponding to the remaining amount of
fuel in the tank. Examine the fuel level sender circuit in
Section 9.9.7, “Fuel Level Indicator Troubleshooting.”
Figure 9-128 Fuel Level Sender
a. Fuel Level Indicator Testing
1. Remove fuel tank cover.
2. The fuel level sender wiring harness leads
(Fig. 9-128, 4) can be accessed from the top of the
fuel tank. Disconnect the fuel level sender wiring
harness leads. With the help of an assistant, touch
both harness leads together.
3. From the operator’s cab, have the assistant turn the
ignition key switch (Fig. 9 -129, 1) to the RUN (2)
position. DO NOT start the engine. Observe the fuel
level indicator needle on the operator’s instrument
cluster. The reading must be at the FULL mark after
the engine startup bulb test is completed.
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MA7620
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MA7750
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