Manitowoc Grove GRT9165, Service Manual

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7-11
GRT9165 SERVICE MANUAL POWER TRAIN
7
Published 10-01-2020 Control # 699-00
GROVE
effectiveness, but does allow the element to get dirty faster
and reduces serviceable life. If a valve is lost or damaged,
replace it with a new valve of the same part number.
Duct Work
1. Check the intake pipe cap and screen for accumulation
of leaves, trash, and other debris that could restrict air
flow. Repair the screen or replace the cap if any large
holes are found in the screen.
2. Check all mounting hardware for security to eliminate
possible vibration of intake piping. Such vibration leads
to early failure of hoses, clamps, and mounting parts,
and can cause hoses to slip off the connecting pipes,
allowing un-filtered air into the engine air intake.
3. Check hoses for cracks, chafing, or deterioration, and
replace at the first sign of probable failure.
Charge-Air Cooler System
The charge-air cooler (CAC) (1, Figure 7-11) is used to cool
engine air after it has passed through a turbocharger, but
before it enters the engine. The charge-air cooler provides
better horsepower, increased fuel efficiency, and reduces
engine emissions.
The CAC system consists of the ducting to and from the
charge-air cooler and a hydraulically driven fan. The charge-
air cooler system must be air-tight to work efficiently.
The ducting consists of metal tubing, hose clamps (2 and 3)
and bellows (4). The recommended installation torque for the
large constant tension clamps (2) is 4.5 N-m (40 lb-in) and
the small constant tension clamps is 6.8 N-m (60 in-lb). Do
not compress the spring completely, the bellows and/or
clamp may be damaged from thermal expansion of the CAC
tube.
On cranes equipped with an optional refinery package, the
CAC features an airflow shutdown valve (5).
FIGURE 7-11
2
1
10186
1 CAC Assembly
2 Clamp, Constant Tension
3 Clamp, Constant Tension
4 Bellows
5
Airflow Shutdown Valve
(Optional)
1
3
4
4
4
4
5
2
Optional Configuration
10185
10187