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1987 Volvo 760
channel walls are covered by a thin layer of platina-palladium. These metals act as catalysts, permitting a chemical action to occur without
actually taking part in it.
The emission (CO, HC, NOx) content will increase if the Catalytic Converter is damaged. Lambda-sond
Converters containing platinum and rhodium.
Torque Catalytic Converter mounting bolts
The Catalytic Converter mounting bolts should be torqued after the first 600-1,200 miles (1,000-2,000 km).
CAUTION:
Vehicles with Catalytic Converter must use unleaded fuel only. Otherwise the Catalytic Converter will become ineffective.
See "Fuel requirements"
pg. 110 Servicing
WARNING!
The ignition system operates at very high voltages. Special safety precautions must be followed to prevent injury.
Always turn the ignition off when:
connecting engine test and diagnostic equipment to the vehicle (timing light, tach-dwell tester, ignition oscilloscope etc).
Replacing ignition components e.g. plugs, coil, distributor, HT leads etc.
Do not touch any part of the ignition system while the engine is running. This may result in unintended movements and body
injury.
Replacing spark plugs
The spark plugs should be changed every 30,000 miles (50,000 km). However, city driving or fast highway driving may necessitate
changing after 10,000 miles (16,000 km) of driving. When installing new plugs, be sure to fit the right type and use correct torque, see
Specifications. When changing the plugs, check that the suppressor connectors are in good condition. Cracked or damaged connectors
should be replaced.
When changing spark plugs, clean the cables and cable terminals, also the rubber seals. If the car is driven on roads where salt is used during
the winter, coat the cables with silicone.
pg. 111 Servicing
Evaporative control system
The 760 is equipped with a gas evaporative control system, which prevents gasoline fumes from being released into the atmosphere.
The system is comprised of an expansion chamber in the fuel tank, a roll-over valve on the cross member in front of the fuel tank, and a
charcoal canister with built-in vacuum.
The components are interconnected by hoses which channel fuel vapor from the gas tank to the charcoal filter, where it is stored until the
engine is started and then drawn into the engine's fuel induction system.
Crankcase ventilation
The engine is provided with positive crankcase ventilation which prevents crankcase gases from being released into the atmosphere. Instead,
the crankcase gases are admitted to the intake manifold and cylinders.
file:///K|/ownersdocs/1987/1987_760/87760_07.htm (10 of 16)12/30/2006 7:55:36 AM
TM
equipped vehicles use Catalytic
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