Daf LF.book - Peterbilt Motors Company

Cab, Instruments and Controls
A. SPEEDOMETER
Depending on the vehicle model, the speedometer has a single scale division in km/
h or a double scale division in km/h and mph.
B. FUEL GAUGE
The fuel gauge only operates when the contact is on.
Factor in the delay on the gauge when the contact is turned on.
C. MASTER DISPLAY
See "MASTER DISPLAY".
D. COOLANT TEMPERATURE GAUGE
The engine should not be operated under full load if the temperature is in the blue
field.
The engine is at operating temperature when the temperature gauge is vertical, or
slightly further.
If the coolant temperature suddenly rises and/or the pointer is in the red field, the
following points should be checked:
- the coolant level (caution – danger of scalding; see "Topping up coolant" in
"INSPECTIONS AND MAINTENANCE");
- the poly V-belt and water hoses;
- the fan clutch.
E. REV COUNTER
Green area: economical
White: less economical
Blue area: only permitted when driving downhill and for optimal use of the engine
brake
Red area: not permitted
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