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REVERSE HYDRAULIC FAN
NOTICE
• After stopping the engine, check around the engine for
sticking dry leaves or dirt.
In particular, carefully check around the exhaust mani-
fold and turbocharger for sticking dirt which can
cause a fire.
• If the aftertreatment devices regeneration pilot lamp
(A) lights up while the fan rotates in reverse, the en-
gine speed may decrease to 1000 rpm, regardless of
the position of fuel control dial.
In this case, the fan speed also decreases and suffi-
cient air flow for cleaning the radiator cannot be ob-
tained. Accordingly, wait under this condition until af-
tertreatment devices regeneration pilot lamp (A) goes
out.
After the lamp goes out, you can increase the engine
speed and make the fan rotate in reverse.
REMARK
If the fan reverse operation is performed while the aftertreat-
ment devices regeneration pilot lamp (A) is lit, the engine
speed may not increase even if the fuel control dial is set to
High idle (MAX) position, but this is not a failure.
The hydraulic fan reverse mode (fan reverse rotation) can be
used to remove the insects and dirt sticking to the radiator core
by blowing air inward the machine with the fan.
Before starting the hydraulic fan reverse rotation, check that
there is no combustible substance in the periphery which may
be sucked in the fan nor the deposit of the soil around the fan.
If there is any deposit, remove it first.
1.
Set the parking brake lever and work equipment lock lever to LOCK positions.
2.
Perform the engine warm-up operation.
If the warm-up operation is not performed, the air flow may be insufficient.
3.
After the warm-up operation, turn the fuel control dial to Low idle (MIN) position.
4.
Stop the engine.
5.
Open the engine side cover on the right and left sides of the machine.
6.
Turn the starting switch to ON position.
7.
Select “Fan Reverse Mode” (1) on “Machine Setting” menu
(b) screen.
8.
Press the switch F6.
OPERATION
EXPLANATION OF COMPONENTS
3-71
Содержание D375A-8
Страница 2: ......
Страница 11: ...Do not repeatedly handle and lift loads FOREWORD VIBRATION LEVELS 1 9...
Страница 13: ...Scale interval of the circles is 1 m FOREWORD INTRODUCTION 1 11...
Страница 59: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
Страница 63: ...REMARK The above figure does not show all of the caution lamp symbols OPERATION GENERAL VIEW 3 5...
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Страница 311: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
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Страница 395: ...SPECIFICATIONS 5 1...
Страница 448: ......
Страница 449: ...REPLACEMENT PARTS 7 1...
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Страница 466: ...D375A 8 BULLDOZER Form No EENAM03603 2019 KOMATSU All Rights Reserved Printed in Belgium 01 2019...