Perkins Phaser Series - Page 159

17D ENGINE TIMING
General description
Lucas DP200 Series fuel injection pumps have a
locking screw (A3) and a spacer (A2). The locking
screw prevents rotation of the drive shaft of the fuel
pump when the pump is removed from the engine.
An "O" ring (A1) is fitted in a groove in front of the
pump flange. This "O" ring is fitted instead of a
joint between the pump flange and the timing case.
Engines which have the Lucas DP200 Series fuel
injection pumps operate at a static timing very close
to TDC.
When the piston is close to TDC there is a
relatively large movement of the crankshaft for only
a small movement of the piston. For this reason the
earlier methods of timing, where piston movement
is measured, is not accurate enough.
When the piston is further down the cylinder, there
is a relatively small movement of the crankshaft for
a large movement of the piston. Therefore greater
accuracy is possible. For this reason the crankshaft
is set at 100° BTDC.
Caution: The drive shaft of the pump must not be
rotated without the spacer in position under the
locking screw or the pump drive shaft will be
damaged.
Engines with these pumps do not have timing
marks put on in the factory, but there is a timing
mark on the pump flange.
A new pump will be received with the locking screw
fitted and the spacer fastened to the engine speed
control by a piece of wire.
Other features which may be fitted to the Lucas
DP200 Series fuel injection pumps are:
• A boost control device (A4)
• A stop solenoid (A5)
• A cold start advance unit (A6) which is
electrically operated.
A data plate is fitted to the side of the pump. An
example of the information shown on the plate (B)
is:
Manufacturers model number (1)
Manufacturers description number (2)
Maximum engine no load speed (3)
Fuel pump code letters (4)
Perkins part number (5)
Fuel pump serial number (6)
For details of the fuel pump code for the engine see
the data and dimensions at the end of this section.
aaaaaaaaaa
a a
a a
a a
a a
3
a a
a a
a a
a a
2
a a
a a
a a
a a
1
a a
a a
a a
a a
4
PA299
a a a
a
a
a
a
a
a
a a a
6
a a
a a
a a
a a
3
a a
a a
a a
a a
5
8920A003T 1071
PA316
a a a
a
a
a
a
a
a
a a a
2
a a a a a a a a a a a a a a a a a a a a a a
a
a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a
a
a a a a a a a a a a a a a a a a a a a a a a
Ser 29381 BNG
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
2644C101BC/1/223100
a a
a a
a a
a a
1
a a a
a
a
a
a
a
a
a a a
6
a a
a a
a a
a a
3
a a
a a
a a
a a
4
a a a
a
a
a
a
a
a
a a a
5
17D.02 Perkins Phaser/1000 Series, April 1995