Group 170
Preventive Maintenance
Cab Climate Control Unit
Recovery/Recharge Unit Area
45
Check A/C Hoses, Fittings, Switches, and
Wires
Note: For further information refer to literature in Func-
tion Group 2.
WARNING
Do not remove the cap to the coolant surge tank while
the engine and radiator are still hot. Scalding fluid and
steam may be blown out under pressure if the cap is
taken off to soon.
Note: This check is also considered Noise Emissions
Control Maintenance, which is required maintenance for
any Volvo vehicle. For further information on Noise Emis-
sions refer to “Noise Emissions” page 6.
To perform a check of the A/C Hoses, Fittings, Switches,
and Wires complete the following:
1
Pump up to where the relief valve releases (heater
controls should be open) at 75 kPa (11 psi). Leave
under pressure for five to ten minutes. Check for
leaks, wear, cracking and distortion on hoses and
tubing.
2
Check hose fittings for tightness and damage.
3
Check damaged wires and switches.
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