Doosan PU086T User Manual

10.1.2. Specification
10.1.3. Thermostat
•
General descriptions and main data
The thermostat maintains a constant
temperature of coolant and improves
thermal efficiency of the engine by
preventing heat loss.
Namely, when the temperature of
coolant is low, the thermostat valve is
closed to make the coolant bypass to
directly enter the water pump; when
the coolant temperature rises to open
wide the thermostat valve, the bypass
circuit is closed and the water passage
to the radiator is opened so that the
coolant is forced to flow into the radia-
tor.
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Item D1146/T, P086TI PU086/T
1. Water pump
Type Centrifugal type
Delivery About 150 liter/min About 190 liter/min
Pump speed 1,800 rpm 2,200 rpm
Pumping back pressure 0.5 bar
2. Thermostat
Operating temperature 71 ˚C
Valve lift 8 mm or more (at 85 ˚C )
Operating temperature 71 ~ 85 ˚C
3. Cooling fan and belt
D1146/T, PU086/T : 590mm - 6
Fan diameter - Number of blades
P086TI : 755mm - 7
Fan belt tension 15mm/ deflection by thumb
EAMC002I
To radiator
To bypass
tube
Bypass
valve
From cooling
water pump
Item
Specifications
D1146/ T P086TI
Type Wax-pallet type Wax-pallet type
Open at 71 ˚C 71 ˚C
Open wide at 85 ˚C 85 ˚C
Valve lift 8 mm or more 10 mm or more

Doosan PU086T Specifications

General

Brand	Doosan
Model	PU086T
Category	Engine
Language	English