Kubota D1803-CR-E4 User Manual

Code number
Valve opening
temperature
Valve full-open
temperature
1J801-73011
80.5 to 83.5 ℃
176.9 to 182.3 ℉
95 ℃
203 ℉
7.7 Radiator
7.7.1 Outline of radiator
The radiator cools coolant whose temperature has
been raised.
Returning of cooled coolant to the engine maintains
cooling performance of the engine.
7.7.2 Structure of radiator
The radiator is made up of an upper tank, lower tank,
and core and the like.
(1) Core
(2) Overflow pipe
(3)
Radiator cap
(4) Upper tank
(5) Lower tank
(6) Cooling air
(7) Tube
(8) Fin
7.7.3 Function of radiator
The radiator has the role of cooling coolant whose
temperature has been raised by heat from the engine.
When passing through the radiator core passage,
coolant is cooled by heat dissipation from the core to
air.
7.7.4 Specification of radiator
(Reference values)
Radiator capacity
4.0 L
1.1 U.S.gals
0.88 Imp.gals
Test pressure
137 kPa
1.40 kgf/cm
2
19.9 psi
*These values may be different depending on the product used
7.8 Radiator cap
7.8.1 Outline of radiator cap
The radiator cap maintains the pressure in the cooling
system at the specified pressure.
7.8.2 Structure of radiator cap
The radiator cap is made up of a pressure valve and
vacuum valve and the like.
(1) Overflow tube
(2) Pressure valve
(3)
Vacuum valve
(A) When radiator internal pres-
sure is high
(B) When radiator internal pres-
sure is below atmospheric
pressure
MECHANISM
7. Cooling system 4. ENGINE
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
4-63
KiSC issued 12, 2018 A

Kubota D1803-CR-E4 Specifications

General

Brand	Kubota
Model	D1803-CR-E4
Category	Engine
Language	English