Volvo VNL Operator's Manual page 82

D — Turbo Boost Pressure (option)
The gauge indicates intake manifold pres-
sure on the engine. The pressure is
generated by the turbo. Boost pressure
should be the same at a given engine tem-
perature, speed and load. Turbo boost
pressure will vary for different engines and
vehicle models. By monitoring the gauge,
the operator can avoid engine problems.
F — Telltale Indicators, Left Section
1 Engine preheat telltale ( page 78)
2 Caution telltale ( page 79)
3 Stop telltale ( page 80)
4 No Charge telltale ( page 81)
Instruments and Controls 77
W3003631
W3003645