Daedong CK22 - Fuel Feed Pump; Fuel Injection Pump

2-23
DS35-W00 May. 2007
CLUTCHCLUTCH CLUTCHCLUTCH
CLUTCH
TRANSMISSIONTRANSMISSION TRANSMISSIONTRANSMISSION
TRANSMISSION
ENGINEENGINE ENGINEENGINE
ENGINE
HSTHST HSTHST
HST
FRONT AXLEFRONT AXLE FRONT AXLEFRONT AXLE
FRONT AXLE
STEERINGSTEERING STEERINGSTEERING
STEERING
BARKEBARKE BARKEBARKE
BARKE
ELECTRICELECTRIC ELECTRICELECTRIC
ELECTRIC
INDEXINDEX INDEXINDEX
INDEX
HYDRAULICHYDRAULIC HYDRAULICHYDRAULIC
HYDRAULIC
GENERALGENERAL GENERALGENERAL
GENERAL
REAR AXLEREAR AXLE REAR AXLEREAR AXLE
REAR AXLE
CK22/CK22H
3
1
2
4
6
7
5
3.4.4 FUEL FEED PUMP
The diaphragm (6) is linked to the tappet (3) with the
push rod (2). The tappet is reciprocated by the eccen-
tric cam on the fuel camshaft (7).
A. INTAKE STROKE
When the diaphragm is pulled down by the spring, it
builds a vacuum in the chamber (5) causing the ex-
haust valve (4) to close and the atmospheric pressure
in the fuel tank to force the fuel into the chamber, open-
ing the intake valve (1).
B. SCAVENGING STROKE
When the diaphragm is pushed up by the cam, the pres-
sure in the chamber causes the intake valve to close
and forces out the fuel, opening the exhaust valve.
(1) Intake valve (5) Chamber
(2) Push rod (6) Diaphragm
(3) Tappet (7) Fuel camshaft
(4) Exhaust valve
From fuel tank
To fuel filter
T46W235B
3.4.5 FUEL INJECTION PUMP
This fuel injection pump is Bosch K type fuel injection
pump. It features a compact and light weight design.
(a) To injection nozzle (b) From fuel filter
(1) Delivery valve holder (5) Plunger
(2) Delivery valve spring (6) Control rack
(3) Delivery valve (7) Plunger spring
(4) Cylinder (8) Tappet
T46W236A
(A) (B)
a
b
1
6
7
8
2
3
4
5
ENGINE - OPERATING PRINCIPLE