Doosan DA40 - High system voltage; External oil leakage; External fuel leakage

SHOP MANUAL
Engine
Ch 1 page 250
High system voltage
External oil leakage
External fuel leakage
Eect Cause Trouble shooting Action
(Normal charging
voltage:
27 - 28 V)
Voltage regulator fault
Battery charger fault
Eect Cause Trouble shooting Action
Crankcase pressure too
high
Check “blow-by” in crankcase
Correct value for new engine: 0 - +10 mm wc
(ow rate 60 - 100 l/min.)
Closed crankcase ventilation: -50 - +20 mm wc
Leaky crankshaft seal
Leakage at liner seal via
overow hole in cylin-
der block
Defective cylinder head
gasket
Leakage in manifold
joint
Low load
Eect Cause Trouble shooting Action
Damaged injector and
injection pump connec-
tions/gaskets
Defective pulsation
damper
Blocked overow valve
Leakage at high engine
speed and low power
output
- Change to Bosch over-
ow valve (with ball)