Precautions - Toyota Supra 1990 Manual

Hide thumbs Also See for Supra 1990:

Table of Contents

TURBOCHARGER SYSTEM - Precautions

Do not stop the engine immediately after pulling a trailer

or high speed or uphill driving. Idle the engine for 20 -

120 seconds, depending on the severity of the driving con-

Avoid sudden racing or acceleration immediately after start-

ing a cold engine.

If the engine is run with the air cleaner removed, foreign

material entering will damage the wheels which run at ex-

tremely high speed.

If the turbocharger is defective and must be replaced, first

check for the cause of the defect in reference to the fol-

lowing items and replace parts if necessary:

• Engine oil level and quality

• Conditions under which the turbocharger was used

• Oil lines leading to the turbocharger

Use caution when removing and reinstalling the turbocharg-

er assembly. Do not drop it or bang it against anything or

grasp it by easily-deformed parts, such as the actuator or

rod, when moving it.

Before removing the turbocharger, plug the intake and ex-

haust ports and oil inlet to prevent entry of dirt or other

foreign material.

If replacing the turbocharger, check for accumulation of

sludge particles in the oil pipes and, if necessary, replace

the oil pipes.

Completely remove the gasket adhered to the lubrication

oil pipe flange and turbocharger oil flange.

If replacing bolts or nuts, do so only with the specified new

ones to guard against breakage or deformation.

10. If replacing the turbocharger, put 20 cc (1.2 cu in.' of oil

into the turbocharger oil inlet and turn the impeller wheel

by hand to spread oil to the bearing.

11. If overhauling or replacing the engine, cut the fuel supply

after reassembly and crank the engine for 30 seconds to

distribute oil throughout the engine. Allow the engine to

idle for 60 seconds.

Chapters

Table of Contents