Operation 11-15 To Adjust - Perkins New 1000 Series Workshop Manual

11
To adjust
The engine conforms with USA (EPA/CARB) stage 1 and EEC stage 1 emissions legislation for agricultural
and industrial applications.
The idle or maximum speed settings must not be changed by the engine operator, because this can damage
the engine or the transmission.
The adjusting screws for the idle and maximum speed settings on later engines are tamper-proof, this is either
by means of lockwire and a seal or by the fitting of tamper-proof caps. The lockwire and seal or the cap must
be renewed after adjustment to the fuel pump. Early tamper-proof caps are green, later tamper-proof caps are
red.
The warranty of the engine can be affected if the seals on the fuel injection pump are broken during the
warranty period by a person who is not approved by Perkins.
1 Remove any tamper-proof devices that are fitted to the adjustment screws.
2 Operate the engine until it reaches its normal temperature of operation and check the idle speed. If
necessary, adjustment can be made by the inner adjustment screw (A1). Release the lock nut and rotate the
adjustment screw clockwise to increase the speed, or counter-clockwise to decrease the speed. When the
speed is correct, tighten the lock nut. The setting of the idle speed can change for different applications.
Normally the correct speed will be given in the manufacturer's handbook for the application. If it is not given,
refer to your nearest Perkins distributor.
Caution: The setting for the maximum no load speed can change for different applications. For the correct
maximum no-load speed, check the emissions data plate fitted to the left side of the cylinder block before any
adjustment is made to the maximum no load speed.
3 With the engine at its normal temperature of operation, check the maximum no load speed. A typical
maximum no load speed is 2860 rev/min. If necessary, this speed can be adjusted by the outer adjustment
screw (A2). Release the lock nut and rotate the adjustment screw counter-clockwise to increase the speed or
clockwise to decrease the speed. When the speed is correct, tighten the lock nut and seal the screw.
Note: The person who adjusts the settings for the pump must ensure that the adjustment screws are suitably
sealed against interference after it has been set initially.
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This document has been printed from SPI². Not for Resale
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Workshop Manual, TPD 1350E, Issue 4
New 1000 Series
Operation 11-15