D
Group 177 Preventive Maintenance
59
Check Intercooler Pipes, Hoses and Air
Flow
Note: This check is also considered Noise Emissions
Control Maintenance, which is required maintenance
for any Volvo vehicle. For further information on Noise
Emissions refer to “Noise Emissions” page 5.
To perform a check of the intercooler pipes and hoses,
complete the following:
•
Inspect the charge-air-cooler for cracks.
Note: Do not operate the vehicle with a damaged or
broken charge-air-cooler. This voids the warranty and the
engine will not meet emission regulation requirements.
The best method to clean the package is to use air
pressure or water stream. Clean from the back of the
core. Air pressure should not exceed 30 psi (200 kPa) for
radiator and charge-air-cooler cores. The use of fin comb
is also a good tool to loosen bugs and dirt from the fins.
Note: If the dirt cannot be cleaned off, consult your Volvo
Truck dealer.
W4002380
60
Check Tightness of Engine and PTO
For further information refer to Group 4.
To complete a check of the tightness of the engine and
PTO, complete the following:
1 Check that the engine does not leak oil or coolant.
2 Check that the fittings, flanges and hose connections
are tight.
3 Check that hoses or pipes do not chaff or are cracked.
4 Check that the PTO or lines do not leak oil.
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