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Check the base fitting of the high−pressure pump
24
Check the base fitting of the high−
pressure pump
Fig. 1 and Fig. 2
For the purpose of checking the start−of−delivery
setting, an “OT” (= TDC) mark and a scale from
10...50° before TDC are engraved on a disc Á
fitted in front of the torsional vibration damper.
The scale marks are read against an indicator À
fitted to the crankcase.
To turn the engine over manually during the setting
work, a plate with a central hexagon bolt must be
located on the front side of the crankshaft pulley.
For this purpose, the speed pickup together with
the plate is to be previously detached.
Fig. 3
The graduated scale on the flywheel, which is vis-
ible through the inspection hole in the flywheel
housing, is often difficult to access. However it
must be used to readjust the indicator after the
vibration damper has been removed or replaced.
For this purpose, before the vibration damper with
scale disc is installed, the engine must be set to
“TDC” using the flywheel marking.
The indicator must then be aligned so that its
measuring edge points exactly to the “TDC” mark
on the scale disc.
Fig. 4
To avoid read−off errors, always look over the
notch on the flywheel housing vertically to the
centre of the flywheel.
The marking on the graduated scale must be on
the imaginary “notch − flywheel centre” line.
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