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POWER TRAIN
GRT9165 SERVICE MANUAL
7-4
Published 10-01-2020 Control # 699-00
12.
Connect electrical wiring to the hourmeter as tagged
during removal.
13.
Connect air filter tubing at engine and air filter. Connect
exhaust tubing to engine and muffler. On Stage V/Tier 4
engines, replace exhaust tube gaskets with new ones.
14.
Install hood top door assembly.
15.
Service engine lubrication system, and engine cooling
system.
16.
Start engine. Check all hoses and fittings for leaks.
Recheck all fluid levels.
Engine Drive Belts
Proper operation of engine belt-driven components such as
alternator, fan, and water pump depend on proper condition
and tension of the engine drive belt.
NOTE:
Belt tension is maintained with an automatic belt
tension device.
The engine drive belt should be inspected visually on a daily
basis. Inspect drive belt for cracks, frayed areas, and glazed
or shiny surfaces (see Figure 7-4). A drive belt that is glazed
or shiny indicates belt slippage.
Engine drive belt damage can be caused by various factors
such as incorrect tension, incorrect belt size, misaligned
engine pulleys, incorrectly installed belt, or by oil, grease, or
hydraulic fluid on the belt.
Refer to engine manufacturer’s manual for special tools or
belt tension specifications.
ELECTRONIC CONTROL SYSTEM
Description
The engine control system is an electronically operated fuel
control system that also provides many operator and vehicle
features as well as reducing exhaust emissions while
optimizing engine performance.
The ECM performs diagnostic tests on most of its circuits
and will activate a fault code if a problem is detected in one of
these circuits. Along with the fault code identifying the
problem, a snapshot of engine operating parameters at the
time of fault activation is also stored in memory. Some fault
codes will cause a diagnostic lamp to activate to signal the
driver. The fault codes can be viewed on the crane control
s y s t e m d i s p l a y i n t h e o p e r a t o r ’s c a b . T h e E C M
communicates with service tools supplied by Cummins
through a SAE J1939 datalink.
The ECM also monitors the condition of the diesel particulate
filter (Stage V/Tier 4 engines only) and alerts the operator by
way of an indicator on the ODM display if the filter becomes
clogged with carbon. When the filter becomes clogged, the
ECM will control the exhaust system cleaning process to
clean the filter of particulate matter.
Engine Control System Indicator Lights
Engine Stop Light
The Engine Stop Light is located in the ODM display. It is a
red indicator light that illuminates to signify a serious engine
problem that requires the vehicle and the engine to be
stopped as soon as safely possible. The engine should
OK
OK
OK
FIGURE 7-4
Missing Material
Traverse Cracks
Longitudinal Cracks Intersecting with Transverse
Cracks must be Replaced
Summary of Contents for Grove GRT9165
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