Daedong CK22, Workshop Manual

Page: 66 / 372

2-14 DS35-W00 May. 2007
CLUTCHCLUTCHCLUTCHCLUTCHCLUTCH
TRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSION
ENGINEENGINEENGINEENGINEENGINE
HSTHSTHSTHSTHST
FRONT AXLEFRONT AXLEFRONT AXLEFRONT AXLEFRONT AXLE
STEERINGSTEERINGSTEERINGSTEERINGSTEERING
BARKEBARKEBARKEBARKEBARKE
ELECTRICELECTRICELECTRICELECTRICELECTRIC
INDEXINDEXINDEXINDEXINDEX
HYDRAULICHYDRAULICHYDRAULICHYDRAULICHYDRAULIC
GENERALGENERALGENERALGENERALGENERAL
REAR AXLEREAR AXLEREAR AXLEREAR AXLEREAR AXLE
CK22/CK22H
(1) Connecting rod (3) Bushing
(2) Crankpin bearing
3.1.5 CONNECTING RODS
The connecting rod is used to connect the piston with
the crankshaft. The big end of this rod has crankpin
bearings (split type) and the small end has a bushing
(solid type).
196W213A
3.1.3 CRANKSHAFT
The crankshaft drives the pistons and connecting rods,
and transfers its reciprocating movement to a circular
camshaft. Six counterweights are integrated into one
unit to minimize bearing wear and lubricating oil tem-
perature rise.
Seal sliding sections are induction-hardened to raise
wear resistance quality.
Crankshaft journals are supported by the main bear-
ing cases in which bearings are used.
Crankshaft bearing 1 at the front end is a wind type
bushing.
Thrust bearing 1, 2 of split type are mounted on both
sides of the main bearing case at the flywheel side.
Crankshaft bearing and thrust bearings are plated with
special raised alloy wear resistance.
(1) Crankshaft (5) Crankshaft bearing 2
(2) Piston (6) Thrust bearing
(3) Connecting rod (7) Counterweight
(4) Crankshaft bearing 1 (8) Main bearing case
3.1.4 PISTON AND PISTON RINGS
Piston circumference has special elliptic shape in con-
sideration of expansion due to heat. The piston head
is flat formed and ribbed to reduce distortion and to
help heat radiation.
Pistons are made of special aluminum alloy of low
thermal expansion and high temperature resistance.
The key stone type top ring is well fitted to the wall and
plated with hard chrome.
Second ring type is effective in preventing oil rising.
The oil ring is effective because it is closely fitted to the
cylinder wall by a coil so oil can be scraped from the
upper and lower ends of its sliding cylinder walls.
A portion of the scraped oil is forced inside the piston
through escape holes of the. rings and pistons. The oil
ring is plated with hard chrome to raise the wear resis-
tance quality.
(1) Rib (4) Hard chrome
(2) Top ring (5) 2nd ring
(3) Surface (6) Coil expander ring
196W211B
196W212A
ENGINE - OPERATING PRINCIPLE