Doosan DV11 - Page 217

DV11
Operation and Maintenance
212
Appendix
Printed in Mar. 2005 PS-MMA0608-E1A
Group Part Inspection item
Stand value
for assembly
Limit
for use
Correction Remark
Damage of oil filter
element
- -
Clean or
replace
By-pass valve pressure
(kg/cm
2
)
1.8 ~ 2.4
Oil filter
Oil filter control valve
pressure (kg/cm
2
)
4.3 ~ 4.7
Radiator & water pump
for corrosion, damage &
improper connecting
- -
Correct or
replace
Test for leakage
by air pressure
(kg/cm
2
)
1.0 -
Submerge in
water and
replace if air
bubbles found
Pressure valve for
opening pressure
(kg/cm
2
)
0.5 -
Radiator
Negative pressure valve
for opening pressure
(mmHg)
20 -
Delivery volume lit/min
- Pump speed : 3,500rpm
- Water temp. : 25°C
- Pressure : 1.8 kg/cm
2
452 or more -
Check
the water
passage
Pulley side
φ25.048~φ25.061
- Diameter
of water
pump
shaft
Impeller side
φ16.045~φ16.056
-
Clearance of bearing 0.050~0.091
Clearance between
impeller & housing
0.5 ~ 0.9 -
Replace if
impeller &
housing are
damaged
Water
pump
Fan belt depression
Refer
to adjust table
- Adjust
Operating
temperature (°C)
79 ~ 95 -
Cooling
w
ater
t
emperature
Permissible
temperature
in a short time (°C)
- 105
Must not
exceed this
value
Opening
temperature (°C)
83 - Replace
Cooling
system
Thermostat
Full opening
temperature (°C)
95 -
Replace if
defective
Stroke : min.
8mm
Fuel high pressure pump
maker (CP pump)
Common rail maker
Fuel injector maker
Bosch -
Fuel pipe, injection pipe
& injector for
damage, cracks,
improper O-ring
- - Replace Fuel
piping &
others
Damage of fuel filter
cartridge
- -
Replace
cartridge
Injection pressure of
injector (kg/cm
2
)
1,600 -
Operating pressure of overflow
valve (kg/cm
2
)
10.5 ~13 - Replace valve
Fuel
system
Diameter of injector nozzle
8 - φ0.197