General Information - Volvo EPA2007 D13F Reference Manual

160 BASIC SERVICE

General Information

Timing marks for basic camshaft timing and adjustment of the valves and unit
injectors are located at the front of the camshaft just forward of the No. 1 front bearing
journal. Two lines at the top of the front bearing cap mark the alignment point for
positioning of the camshaft and making the adjustments.
The top dead center (TDC) mark is used for basic camshaft timing. The TDC mark
must be between the two lines on the front camshaft bearing cap when the flywheel is
at 0° (top dead center for cylinder No. 1).
The engine must be cold, 60°C (140°F) or less, before making these adjustments.
Camshaft markings for setting of valves and unit injectors:
•
Without Volvo Engine Brake : Markings 1–6 apply to adjustment of inlet valves,
exhaust valves and injectors.
•
With Volvo Engine Brake : Markings 1–6 apply to adjustment of inlet valves and
injectors. Markings E1–E6 apply to adjustment of exhaust valves.
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