Def/Adblue ® Freeze Warning (M5N-091, M5N-111); Stopping The Engine; Warming Up The Engine; Warm-Up And Transmission Fluid At Low Temperature Range - Kubota M4N-071 Operator's Manual

OPERATING THE ENGINE
completely released, the indicator will go off and the
buzzer will stop.
(1) Low temperature regulation
indicator
®
3. DEF/AdBlue freeze warning
(M5N-091, M5N-111)
When operating in cold weather, the DEF/AdBlue
automatically thawed while the engine is running.
However, in weather conditions of under -30 ℃(-22 ℉),
®
the DEF/AdBlue cannot be completely thawed and
thus, an error/warning code [ENG P-208B] appears on
the instrument panel's LCD screen.
If the error/warning code [ENG P-208B] appears on the
screen, stop the engine and restart it after 10 seconds.
After restarting the engine, the error/warning code
[ENG P-208B] will disappear and the thawing of the
®
DEF/AdBlue will resume.
In case the error/warning code [ENG P-208B] remains
on the screen even after restarting the engine several
times, contact your local KUBOTA Dealer.
(1) Error/warning code

STOPPING THE ENGINE

IMPORTANT :
M5N-091, M5N-111
• When the engine is stopped-shutdown, DEF/
®
AdBlue flow is reversed in the DEF/AdBlue
48
OPERATING THE ENGINE IN FREEZING CONDITIONS
lines and related piping and returned back into
the DEF/AdBlue
®
AdBlue injector.
The SCR system continues working several
minutes after engine shutdown to complete this
purge process.
• Do not turn the machine main battery power off
to the engine until the DEF/AdBlue
cycle purge process is completed. Turning off
the main battery power to the engine and
aftertreatment system prior to completion may
damage the system or cause it to malfunction.
NOTE :
• If removing the key does not stop the engine,
consult your local KUBOTA Dealer.
• Some noise heard for a couple of minutes after
the engine has been stopped. This is because
DEF/AdBlue
to cool down the DEF/AdBlue
1. After slowing the engine to idle, wait 3 to 5 minutes
for turbo to slow down and then turn the key to
®
is
"OFF".
2. Remove the key.

WARMING UP THE ENGINE

WARNING
To avoid personal injury or death:
• Be sure to set the parking brake during warm-
up.
• Be sure to set all shift levers to the "NEUTRAL"
positions and to place PTO clutch control
switch in "OFF" position during warm-up.
For 5 minutes after engine start-up, allow the engine to
warm up without applying any load; this is to allow oil to
reach every engine part. If load should be applied to
the engine without this warm-up period, trouble such as
seizure, breakage or premature wear may develop.
1. Warm-up and transmission fluid at
low temperature range
Hydraulic oil serves as transmission fluid. In cold
weather, the oil may be cold with increased viscosity.
This can cause delayed oil circulation or abnormally
low hydraulic pressure for some time after engine start-
up. This, in turn, can result in trouble in the hydraulic
system.
To prevent
instructions:
Warm up the engine at about 50% of rated rpm
according to the following table:
®
®
tank after cooling the DEF/
®
is still flowing through the circuit
®
injector.
the above, observe
M4N-071, M5N-091, M5N-111
®
return
the following