Perkins Phaser Series - Page 259

20E FUEL SYSTEM
To adjust - Stanadyne pump20E-07
To adjust
1 Operate the engine until it reaches its normal
temperature of operation and check the idle speed.
If necessary, adjustment can be made by the
adjustment screw (A2). 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 correct speed will normally be given in the
manufacturer's handbook for the application. If it is
not given, apply to your nearest Perkins distributor
or to Technical Services Department, Perkins
International Ltd, Peterborough, England.
Caution: The setting for the maximum no load
speed can change for different applications. Always
check the fuel injection pump data plate (B) fitted to
a specific engine, before any adjustment to the
maximum no load speed.
2 With the engine at its normal temperature of
operation, check the maximum no load speed on
the fuel pump data plate. An example is given at
(B1); if necessary, this speed can be adjusted by
the adjustment screw (A3). 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. The person who fits
the pump must ensure that the adjustment screw is
suitably sealed against interference after it has
been set initially. The adjustment screw on original
fuel pumps is set and sealed by the manufacturer.
The setting must not be changed as this could
affect the engine warranty.
a a a
a
a
a
a
a
a
a
a
a
a a a
3
a a
a a
a a
a a
2
PA155
a a
a a
a a
a a
1
H3 DB2435 4759
2820
Model No RPM
Ser N
o
Mfg N
o
2643U001 AL
7585429
PA153
a a
a a
a a
a a
1
20E.04 Perkins Phaser/1000 Series, April 1995