91
Fuel injection system
19
Run the engine and check for any leakage. Check
that the idle speed is correct, operation 19A-07.
20
If a new fuel injection pump has been installed,
check that maximum idling speed, operation 19A-
07.
Idling speed, adjustment
(19A-07)
1
Run the engine to operating temperature and check
the idling speed. If required adjustment can be car-
ried out using the inner adjustment screw (B1).
Slacken off the locknut and turn the screw clock-
wise to increase and counter-clockwise to decrease
the engine speed (RPM). Tighten the locknut when
the engine speed (RPM) is correct.
2
Check the maximum idling speed with the engine at
operating temperature. The maximum idling speed
is taken from the last section of the fuel injection
pump setting code. The setting code can be found
on the type plate on the side of the fuel injection
pump. A typical setting code is 2643H000CE/1/
3200. In this example the maximum idle speed is
3200 rpm. If necessary this speed can be adjusted
with the outer adjuster screw (B2). Slacken off the
locknut and turn the screw counter-clockwise to in-
crease and clockwise to decrease the engine speed
(RPM). When the engine speed (RPM) is correct,
tighten the locknut and seal the screw. The person
who installs the pump must check that the adjust-
ment screw is sealed in a suitable manner so that
the setting cannot be changed later.
On new pumps the adjustment screw is set and
sealed by the manufacturer. The setting may not be
changed, if it is changed the engine’s guarantee can
be affected.
Summary of Contents for MD22
Page 1: ...Engine repair MD22 TMD22 TAMD22 Workshop Manual 2 0 A ...
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Page 129: ...127 Notes ...
Page 130: ...128 Notes ...
Page 132: ...7738684 5 English 04 1999 ...