2-19
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) Warning lamp
(5) Contact
(2) Battery
(6) Oil passage
(3) Rubber gasket
(7) Cylinder block
(4) Contact rivet
(8) Oil
196W223B
3.2.5 OIL PUMP
The oil pump is a gear pump, whose rotors have tro-
choid lobes. The inner rotor (3) has 4 lobes and the
outer rotor (4) has 5 lobes, and they are eccentrically
engaged with each other. The inner rotor, which is driven
by the crankshaft through the gears, rotates the outer
rotor in the same direction, varying the space between
the lobes.
While the rotors rotate from (A) to (B), the space lead-
ing to the inlet port increases, which causes the oil to
flow through the inlet port.
When the rotors rotate to (C), the port to which the space
leads is changed from inlet to outlet.
At (D), the space decreases and sucked oil is dis-
charged from the outlet port.
(1) Inlet
(3) Inner rotor
(2) Outlet
(4) Out rotor
196W224A
196W222A
3.2.2 RELIEF VALVE
The relief valve prevents damage to the lubrication sys-
tem due to high oil pressure. Control range of the relief
valve is 196 to 441 Kpa (2.0 to 4.5 kgh/cm², 28 to 64 psi).
3.2.3 BY-PASS VALVE
Oil filter cartridge has a by-pass valve inside, to pre-
vent the lack of lubrication oil in the engine, If the oil
filter element is clogged the by-pass valve opens and
lets the oil pass to each part of the engine without pass-
ing through the filter.
3.2.4 OIL PRESSURE SWITCH
The oil pressure switch is installed on the cylinder
block and leads to the oil passage of the lubricating
oil.
When the oil pressure falls below the specified value,
the contacts of the oil pressure switch closes to turn
on the warning lamp (1).
(A) At lower oil pressure
(49 kPa (0.5 kgf/cm
2
, 7 psi) or less)
(B) At proper oil pressure
ENGINE - OPERATING PRINCIPLE
(1) Relief valve
(4) From pump
(2) By-pass valve
(5) To crankshaft
(3) To rocker arm shaft and camshaft
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