Manitowoc Grove RT880E User Manual

Grove Published 11-10-2014, Control # 524-00 7-19
RT880E SERVICE MANUAL POWER TRAIN
7
Clean the aftertreatment DEF dosing unit cap with warm
water and a clean cloth.
Filter Installation
1. Slide the DEF filter equalizing element (2) into the DEF
filter cartridge (3).
2. Insert the assembly into the aftertreatement DEF dosing
unit.
3. Install and tighten the cap (1). Torque to 177 lb-in (20
Nm).
NOTE: The aftertreatment DEF dosing system will not
prime until the correct SCR temperatures are
reached. To verify that there are no DEF leaks, initi-
ate a stationary exhaust system cleaning to get the
SCR system up to temperature.
4. Connect the electrical connector.
5. Operate the engine and check for leaks.
WATER COOLING SYSTEM
Description
The cooling system consists of a radiator (Figure 7-13),
surge tank, engine cooling circuit, charge air cooler circuit,
the connecting hoses and connecting tubes. Cooling system
capacity is approximately 50 qt (47 l). The radiator consists
of two sections; the top section is the charge air cooler, the
bottom section is the engine water cooler. The temperature
is controlled by a 181°F (83°C) thermostat located at the top
of the engine. At all times, the antifreeze/coolant should be
properly inhibited against corrosion. It is recommended that
a mixture of AFC-50/50 blended ethylene-glycol, low silicate,
fully formulated, engine antifreeze/coolant concentrate and
water which does not require a pre-charge of supplemental
coolant additives (SCA) for use in initial fill of heavy duty
liquid cooled internal combustion engines be used at all
times.
Coolant lines that go from the engine to the aftertreatment
system serve two purposes – they thaw (heat) the DEF
tank, and they cool the decomposition reactor tube.
The crane is equipped with a cab hot water heater. Hot water
is supplied by the engine coolant system through a strainer
and two port water swivel to the cab heater. The strainer is a
cleanable type and is located on the right side of the
transmission forward of the rear engine/transmission mount.
Refer to Lubrication, page 9-1 for service of the strainer.
Maintenance
General
The cooling system includes the radiator, surge tank,
thermostat, the fan, and water pump. Radiator hoses are
also included in this group.
The cooling system is often neglected because the effects or
damage that result from an improperly maintained system
usually occur gradually. The cooling system needs to be
maintained with the same attention as other systems.
The circulation of water through the cooling system relies
entirely upon the water pump. The water pump draws water
from the radiator and forces it through the water jacket and
cylinder head. There it accumulates heat and flows to the
right radiator tank. Then the water flows across through the
radiator core and is cooled by air from the fan. This process
of removing heat from water as it circulates holds the engine
to its efficient operating temperature.
The following paragraphs point out several facts about
cooling system components, the effects of cooling system
neglect, and procedures to be followed for cooling system
maintenance.
Effects of Cooling System Neglect
Whenever an engine does not perform at top efficiency, a
neglected cooling system may be at fault even though the
part directly responsible is not a part of the cooling system.
Most of these problems can be traced to overheating;
however, an engine that is running too cold can be just as
troublesome.
Overheating
An engine that is overheating may lead to troubles such as
the following:
• Burned valves.
• Pinging or knocking.
• Excessive fuel consumption.
• Poor lubrication - increased engine wear.
• Sticking valves.
• Short injector life.
• Engine hot spots.
• Need for higher grade fuel.
Overcooling
The following engine troubles result when an engine is
overcooled:
• Excessive fuel consumption.
• Sludge formation in crankcase.
• Corrosive acids formed in crankcase.
• Excessive fuel deposits in the exhaust system.
Rust Prevention
To keep engines operating at newness efficiency, all forms of
rust formation must be prevented. The formation of rust in
the cooling system is a result of the interaction of water, iron,

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English