84
4 DLT ENGINE
ANTISTALL SETTING :
Speed should increase from idle speed. If not
adjust antistall in the direction of throttle travel
as required.
5 Move the throttle lever to near full throttle position
and release. The die-down time should be
maximum 4 seconds without any undershoot
(speed reducing below idle speed and jerk /
vibration observed). If it is more than 4 seconds
move antistall screw in the direction of the drive
end as required. If undershoot is observed move
in the direction of throttle travel.
6 Verify and confirm that idle speed has not been
disturbed. If idling found to be disturbed, repeat
the antistall setting procedure (steps 4 to 7).
l
Don’ts
Do not try to adjust / set idle speed with antistall
screw.
Fig. 168
Drive End
Idling Screw
Antistall screw
Direction of throttle travel
Procedure
l
This is set to prevent vehicle stalling when the
accelerator pedal is suddenly released from the
depressed position
l
Setting is achieved by optimizing between dead
travel and die-down time.
l
Verifying / Adjusting Antistall setting
1 Warm the engine sufficiently to ensure that the
thermostat is open and the engine is free to rotate.
2 Air-conditioning should be in the off position. No
other external loads (like power steering,
alternator loads) should be imposed on the
engine.
3 Check idling speed. Adjust the same using idling
screw to the specified value, if required. (850-
900 rpm).
4 Move the throttle lever by approximately 2.0mm.




