Manitowoc 999, Руководство по обслуживанию и ремонту

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Reference
Only
Manitowoc
Published 05-16-17, Control # 233-03
7-15
999 SERVICE/MAINTENANCE MANUAL POWER TRAIN
7
EXHAUST AFTERTREATMENT SYSTEM
See Figure 7-11 for the following procedures.
The engine exhaust is treated to significantly reduce the
amount of harmful by-products of combustion from
contaminating breathable air.
DEF Tank
The DEF tank (1, Figure 7-11 ) houses 15 gallons (57 L) of
DEF. DEF consists of 32% urea and 68% de-ionized water. A
constant mist of DEF, equal to 2-3% of the fuel used, is
injected into the DRT module (7). This is about 10 gallons (38
L) of DEF for 2 to 3 tanks of fuel.
There is a 40-micron filter in the DEF supply line. For filter
maintenance intervals and procedures, refer to the engine
manufacturer’s manual.
A drain valve is provided in case the tank needs to be
emptied of poor-quality DEF.
NOTE: Do not store DEF for long periods of time. DEF will
deteriorate relative to time and temperature. Low-
quality DEF may require the tank to be drained and
the system purged.
Abbreviation Description
APS Aftertreatment Protection System
DEF Diesel Exhaust Fluid
DOC Diesel Oxidation Catalyst
dP Dual Pressure
DRT Decomposition Reactor Tube
ECM Engine Control Module
HEST Hugh Exhaust System Temperature
SCR Selective Catalytic Reduction
NH
3
Ammonia
NO
x
Generic term for the mono-nitrogen
oxides NO and NO2 (nitric oxide and
nitrogen dioxide). They are produced
from the reaction of nitrogen and
o x y g e n g a s e s i n t h e a i r d u r i n g
combustion.
WARNING
Hot Exhaust Surfaces and Inhalation Hazards
Extremely hot surfaces and exhaust gases can cause
death or serious injury. Allow engine and exhaust system
to cool before servicing.
WARNING
Chemical Hazard!
DEF contains urea. Do not get DEF in your eyes. In case
of contact, immediately flush eyes with large amounts of
water for a minimum of 15 minutes. Do not swallow. In the
event the DEF is ingested, contact a physician
immediately.
Item Description
1 DEF Tank
2 Fill Cap
3 DEF Return Port
4 DEF Coolant OUT Port
5 DEF Coolant IN Port
6 DEF Suction Port
7 Electric Plug
8 Drain Valve
FIGURE 7-12
1
2
6
7
3
4
5
8