Manitowoc Grove TMS9000-2 Series, Руководство по обслуживанию

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Grove
Published 01-14-2021 Control # 707-01
7-9
TMS9000-2 SERVICE MANUAL POWER TRAIN
7
the engine temperature is 13°C (55°F) or below to facilitate
engine starting. When activated, the system actuates the
valve assembly, passing starting fluid from the bottle through
the atomizer into the air intake manifold where it mixes with
the intake air to facilitate engine combustion.
Maintenance
Troubleshooting
Dust passing the air cleaner, even through small holes, can
cause rapid engine wear. Make sure that all connections
between the air cleaner and the engine are tight and sealed.
If these connections are all well sealed, and there is still
evidence of dust leakage, check the following places for
possible trouble.
NOTE: Dust that gets by the air cleaner system can often
be detected by looking for dust streaks on the air
transfer tubing or just inside the intake manifold
inlet.
1. Inspect the air cleaner outlet tube for damage.
2. Make sure that the element gasket washer is not
damaged and the washer’s rubber face seals against
the element.
3. Inspect the element gasket for damage.
4. Check for structural failures. Any damaged parts must
be replaced.
5. Inspect the restriction indicator tap for leaks.
Check For Filter Restriction
As a dry cleaner element becomes loaded with dust, the
vacuum on the engine side of the air cleaner (at the air
cleaner outlet) increases.
The vacuum is generally measured as restriction in inches of
water. The engine manufacturer places a recommended limit
on the amount of restriction the engine will stand without loss
in performance before the element must be cleaned or
replaced. Cummins allows a vacuum of 6.2 kPa (25 inches of
water) maximum with a dirty air cleaner at maximum
governed RPM.
A service indicator on the air cleaner housing will indicate
when the filter needs to be cleaned or replaced. Reset the
indicator each time the air cleaner is serviced. If the
indicator’s accuracy is suspect, a water manometer is the
most accurate and dependable method of measuring
vacuum.
To use the manometer, hold it vertically and fill both legs
approximately half full with water. One of the upper ends is
connected to the restriction tap on the outlet side of the air
cleaner by means of a flexible hose. The other end is left
open to the atmosphere.
Maximum restriction in the air cleaner occurs at maximum air
flow. On this turbocharged diesel engine, the maximum air
flow occurs only at maximum engine power.
With the manometer held vertically and the engine drawing
maximum air, the difference in the height of the water
columns in the two legs, measured in inches or centimeters
is the air cleaner restriction. Restriction indicators are
generally marked with the restriction at which the red signal
flag locks up.
If the initial restriction on a new or clean filter reads above the
maximum allowed for the engine, check the following items.
1. Make sure that the air cleaner inlet is not plugged.
2. Inspect the air cleaner outlet to be sure it is not plugged
by paper, rags, etc.
3. Make sure that the correct size connections are used
between the air cleaner and the engine.
4. Make sure that all inlet accessories are the correct size
and are not plugged by any foreign object.
Filter Element Replacement
1. Unlatch the latches, open the air cleaner body, and
withdraw the element as follows:
a. RELEASE THE SEAL GENTLY. The filter element
(Figure 7-4) fits tightly over the outlet tube, creating
the critical seal on the inside diameter of the filter
end cap. The filter should be removed gently to
reduce the amount of dust dislodged. There will be
some initial resistance, similar to breaking the seal
on a jar. Gently move the end of the filter up and
down and side to side or twist to break the seal.
b. AVOID DISLODGING DUST FROM THE FILTER.
Gently pull the filter (Figure 7-5) off the outlet tube
and out of the housing. Avoid knocking the filter
against the housing.
CAUTION
Engine Damage Hazard!
Never service the air cleaner while the engine is running.
FIGURE 7-4
Fo
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Reference
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