Engine: Cummins 4BT 3.9, B4.5T and QSB 4.5T
7.30
Model 644E-42/944E-42
Rev. 6/04
7.9
ENGINE EXHAUST SYSTEM
The exhaust system is supported by the engine and the
vehicle frame to help minimize the transfer of noise and
vibration into the operator’s cab. The tail pipe directs
exhaust fumes to the right side of the vehicle, away from
the cab.
Annoying rattles and noise vibrations in the exhaust
system are usually caused by misalignment of parts.
When aligning the system, leave all capscrews and nuts
slightly loose until all parts are properly aligned, then
tighten all fasteners working from the front of the system
to the rear.
When installing exhaust system components, allow
sufficient clearance between the components and other
vehicle pipes, hoses and wiring that could be adversely
affected by excessive heat.
When installing an exhaust system, provide for parts
expansion when the system is hot.
Whenever performing service on the vehicle, check the
condition of the exhaust system. Check the entire
exhaust system for broken, damaged, missing or
improperly aligned parts, open seams, holes, loose
connections and other deterioration which could permit
exhaust fumes to seep into the operators cab. Correct
any damaged areas immediately.
7.9.1
Exhaust System Removal
1. Park the vehicle on a firm, level, surface. Level the
vehicle, ground the attachment, place the travel
select lever in the (N) NEUTRAL DETENT position,
engage the parking brake switch and shut off the
engine.
2. Secure accident prevention tags to the steering
wheel and ignition switch. (Refer to Section 1.5,
“Accident Prevention Tag Usage.”)
1. Unlatch and open the engine hood. Allow the engine
to cool before proceeding.
2. If the vehicle has dual batteries, disconnect both
negative battery cables (1 and 2) from both
batteries.
To access the lower battery (3), loosen the knob (4)
far enough so that the lip (5) on the upper battery box
clears the knob. Lift up the upper battery box (6) and
swing it out, so that the box clears the hydraulic tank
support bracket, to gain access to the lower negative
battery cable (1). Disconnect the lower negative
battery cable.
WARNING:
Exhaust fumes contain
carbon monoxide, a colorless, odorless gas
which is fatal when inhaled in a confined area.
Avoid breathing exhaust fumes and prevent
engine operation from becoming a cause of
toxic emissions. Exhaust system components
reach high temperatures and can cause severe
burns. DO NOT come into contact with hot
exhaust system components.
WARNING:
DO NOT attempt this
procedure when the engine is hot. Wait for the
engine, muffler, and tailpipes to cool down
before proceeding. Failure to do so could result
in severe burns.
MU0650
1
2
3
4
5
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Содержание 944E-42
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