Kubota WSM L3560, Workshop Manual

Page: 164 / 801

ENGINE
L3560, L4060, L4760, L5060, L5460, L6060, WSM
1-S17
[5] PCV VALVE
PCV (Positive Crankcase Ventilation) Valve (Oil Separator)
1. Remove the cover (1) and PCV valve (spring and diaphragm)
(2).
2. Check whether there is no damage of the spring and/or no
breaking or damage of the diaphragm.
If there are any damage or breaking, replace the oil separator
kit with a new one.
NOTE
• If you find ice inside of PCV or breather hose, there is an
option to install "Antifrost Heater Kit".
Contact sales company to confirm the kit number.
9Y1210824ENS0119US0
[6] EGR COOLER
EGR Cooler
(Exhaust gas passage)
1. Block the EGR cooler exhaust gas outlet (2).
2. Attach an air hose to the EGR cooler exhaust gas inlet (1) and
then submerge it in a water tank.
3. Check that the coolant passage is full of water.
4. Apply the specified amount of air pressure
(a)
(290 kPa,
3.0 kgf/cm
2
, 43 psi) to the air hose side, and check that there are
no air leaks in any of the EGR cooler parts.
5. If there are air leaks, replace the EGR cooler.
(Coolant passage)
1. Block the EGR cooler exhaust gas inlet (1), EGR cooler exhaust
gas outlet (2), and the coolant outlet (3).
2. Attach an air hose to the EGR cooler coolant inlet (4), and then
submerge it in a water tank.
3. Apply the specified amount of air pressure
(a)
(250 kPa,
2.5 kgf/cm
2
, 36 psi) to the air hose side, and check that there are
no air leaks in any of the EGR cooler parts.
4. If there are air leaks, replace the EGR cooler.
9Y1210824ENS0121US0
(1) Cover (2) PCV Valve
EGR cooler leakage test
pressure
Factory
specifica-
tion
Exhaust
gas
passage
290 kPa
3.0 kgf/cm
2
43 psi
Coolant
passage
250 kPa
2.5 kgf/cm
2
36 psi
(1) Exhaust Gas Inlet
(2) Exhaust Gas Outlet
(3) Coolant Outlet
(4) Coolant Inlet
(a) Air Pressure
KiSC issued 03, 2016 A