ANTI-STALL DEVICE
S.I.G.M.A. Rotary Type Pump (TV8.510 (M))
There is no anti-stall device incorporated in this type of fuel injection pump.
C.A.V. DPA Rotary Type Pumps
Refer to Fig. 11 (c) (d)
1.
Slacken locknut (2 or 7 ) sufficiently to enable the anti-stall adjusting screw (1 or 6) to be unscrewed two complete
turns.
2.
Adjust idling speed to 625 rpm* with idling adjustment screw (4 or 2).
3.
Screw down anti-stall adjusting screw (1 or 6) until there is a very slight increase in engine speed, bring back half a
turn and lock with lock nut (2 or 7).
4.
Accelerate engine to maximum no load rpm and immediately return to idle (See page 32). Should the period of
return from maximum rpm to idle exceed three seconds, the device has been turned too far.
'This idle speed may vary according to application. If in doubt, refer to your nearest Perkins Distributor.
Fig. 11 (c) Earlier Fuel Pump
1.
Anti-stall adjusting screw
4.
Idle adjustment screw
2.
Anti-stall locknut
5.
Maximum speed screw
3.
Air vent screw
If the engine stalls out, the device has not been turned in far enough. The necessary adjustment should be made to
overcome either situation.
Do not attempt to adjust the maximum speed screw (5). This is a factory
adjusted setting that requires special test equipment. If the setting is
altered, the result may be severe engine damage.
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