Snorkel TB50 - Manual (Page 37)

Chapter 7 – Prestart Inspection
TB42/TB50 – 0074923 33
Air Filter
The air filter gauge (refer to Figure 7.7) has an indicator
to show when the filter needs replaced.
Figure 7.7 – Gauges at Lower Controls
To inspect the air filter:
1. Turn the battery disconnect switch on and close the
cowling door.
2. On dual fuel machines, set the fuel switch to either
LPG or gasoline.
3. At the lower controls, pull the emergency stop button
outward.
4. Insert the key into the start switch and turn the en-
gine on.
5. Check the clear zone after running the engine for
30 seconds.
• If the indicator is in the red area, replace the
filter.
• If the indicator is in the clear area, the filter
is OK.
6. Shut off the engine.
Charging System
When the engine is running, the ammeter needle (refer
to Figure 7.7) should be to the right of “0.” Left of the
“0” is discharging.
On machines with General Motors engines, when the
engine is running, the voltmeter should indicate between
12.5 and 14 volts.
Cold Weather Start Kit
If the machine is equipped with an optional engine block
heater, radiator hose in-line heater, visually inspect the
heater and power cord. Inspect for leaks around the
heater and for damage to the power cord.
To inspect the fuel tank:
1. Open the doors on the right side of the chassis to
access the fuel gauge.
2. Check fuel level indicated on the gauge.
3. If necessary, remove the cap and add fuel.
Note
Refer to Chapter 2 for fuel grade specifications.
4. Make sure the cap is securely fastened.
Use the following procedure to change the LPG tank.
1. Close the shutoff valve (refer to Figure 7.6).
Figure 7.6 – LPG Tank
2. Remove the fuel line from the tank using the quick
disconnect fitting.
3. Pull on each latch to release the straps from the
tank.
4. Carefully lift the tank from the cradle.
5. Place a full tank in the cradle, making sure the slot
in the tank aligns with the pin.
6. Latch both straps to secure the tank.
7. Connect the fuel line and open the shutoff valve.
Fuel Line
To inspect the fuel line:
1. Visually inspect the entire length of the fuel line
starting at the fuel tank.
2. Trace the line to the engine, inspecting for leaks and
damage.
Pin
Slot
Shutoff Valve
Quick Disconnect Fitting
Reset Button
Air Filter Gauge
Ammeter – Cummins, Deutz,
and Ford Engines
Voltmeter – General Motors Engines
Engine Temperature Gauge