Perkins 103-06 Workshop Manual page 36

A. A mechanical all speed governor is used. It is
housed in the gear case.
A flyweight assembly is mounted on the
camshaft. The movement of the flyweight is
transmitted to the injection pump control rack
by way of the slider, control lever and link. A
spring which is hooked to the arm and tension
lever regulates the movement of the flyweight.
By changing the set angle of the governor lever,
tension on this spring is changed. Thus, the
engine speed can be regulated by the governor
lever.
B. Maximum speed set bolt.
Set bolt is mounted on the cylinder block. This
Nozzle and Holder -
Specification
Item
Part code
Assembly number
Nozzle holder
Nozzle
Nozzle type
Needle valve diameter
Pintle diameter
Valve opening pressure
Spraying angle
Construction/Function
A. The nozzle has been machined to inject fuel,
which is pressure-fed from the injection pump
to the combustion chamber. Fuel is pressure-fed
from the oil hole of the nozzle holder to the
nozzle body and sprayed from the nozzle
compressing the spring when the pressure
exceeds the specified value. Some fuel lubri-
cates and cools the nozzle and nozzle body, and
returns via the return pipe.
Valve closed Valve open
C. Max. fuel and start spring.
Perama M25/M30/103-09/103-10
131406330
093500-3320
093100-3320
(ND-KCA46SD332)
093400-1460
(ND-DN4SDND146)
Throttle type
6mm
115-125kg/cm (111-121 ats)
2
4°
- Disassembly/Inspection
A. Place the nozzle holder (body) in a vice and turn
B. Wash the nozzle body and needle valve and
C. Inspect the upper and lower contact surfaces of
D. Check the nozzle needle valve-contact surface
Full opening
6
(main jet)
,
M
q
L7111
1 1Y
11
17
bolt limits the movement of the arm and has
been adjusted and sealed at the factory.
These are built into the cylinder block, to regu-
late fuel injection at high speed. Regulation of
fuel injection in the middle speed range is by
torque spring to realize higher torque.
A start spring is placed between the gear case
and link. This spring automatically functions to
increase fuel during the start mode.
An idling spring at the gear case stabilizes
engine idling speed.
The max. fuel has been adjusted at the factory
and sealed.
103-06
131406340
093500-2240
093100-2240
093400-5010
(ND-4PDI)
Throttle type
3.5mm
1mm
115-125kg/cm
4°
the nozzle nut to disassemble.
NOTE: Care should be taken so that the needle
valve does not fall when the nozzle is removed.
inspect the nozzle for seizure, sticking and fuel
leakage on the seat surface. If fuel leakage is
detected, replace the nozzle.
the distance piece and correct so that positive
contact can be obtained.
on the push rod for wear, and spring seat for
cracks.
2