Manitowoc 2250 Service Maintenance Manual

Reference Only
Manitowoc Published 07-19-16, Control # 249-01 7-13
2250 SERVICE/MAINTENANCE MANUAL POWER TRAIN
7
EXHAUST AFTERTREATMENT SYSTEM
The engine exhaust is treated to significantly reduce the
amount of harmful by-products of combustion from
contaminating breathable air.
Diesel Exhaust Fluid (DEF) Tank
See Figure 7-12 for the following.
The DEF tank (1) can hold 57 L (15 gal) of DEF. DEF
consists of 32% urea and 68% de-ionized water. A varying,
metered mist of DEF, equal to 2 to 3% of the fuel used, is
injected into the decomposition reactor tube (DRT) (2). This
is about 59 L (15.6 gal) of DEF for two 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 (9) 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
deteriorates relative to time, temperature, and
sunlight (UV). Poor-quality DEF may require the
tank to be drained and the system purged. Store
DEF in a cool, dark location.
Coolant Solenoid Valve
See Figure 7-12 for the following.
When needed, the diesel exhaust fluid (DEF) is heated by
engine coolant which is circulated through a heat exchanger
in the tank. If the tank temperature drops below –4°C (25°F),
the engine control module (ECM) opens the coolant control
valve (3) to allow coolant to flow through the heat exchanger.
Coolant Manifold
See Figure 7-12 for the following.
The coolant manifold (4) routes coolant flow to the system.
WARNING
Hot Exhaust Surfaces and Inhalation Hazards!
Extremely hot surfaces and exhaust gases can cause
death or serious injury.
Allow the engine and exhaust system to cool before
performing service procedures.
WARNING
Personal Injury or Equipment Damage Hazard!
Personal injury and/or equipment damage may occur if a
technician is inexperienced in servicing diesel exhaust
fluid (DEF) equipment.
Do not remove hoses from or attempt to service the DEF
supply module without first consulting the engine
manufacturer’s instructions.
CAUTION
Equipment Damage!
Use of non-approved replacement parts may result in
system damage.
The diesel exhaust fluid (DEF) system components are
designed to withstand freezing and to be compatible with
DEF fluid and the other unique characteristics of the
system. Use only approved replacement parts when
servicing the system.
WARNING
Chemical Hazard!
Diesel exhaust fluid (DEF) contains urea, and exposure to
certain body parts or ingestion can cause death or serious
injury.
Observe the following:
• 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 DEF. If DEF is ingested, contact a
physician immediately.
CAUTION
Loss of Power or Engine Shutdown Hazard!
If the diesel exhaust fluid (DEF) is not maintained, an error
code is activated. Poor-quality or low DEF can lead to
engine power being reduced (de-rated) by the engine
control module (ECM). If the condition persists, engine
shutdown may occur.
Do not use a poor-quality DEF or allow the DEF to run low.
Refer to Section 3 of the Operator Manual for identification
and location of the engine and exhaust aftertreatment
warning lights.

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English