Renault Laguna III Manual page 843

Turbocharging: Precautions for the repair
F4R or K9K or M9R or V9X
One by one, clean the pipes removed with the parts
washer :
- brush as much of the inside of the pipe as possible
(only use brushes with plastic bristles),
- wash plenty of cleaning product from the cleaning sta-
tion through the pipe,
- allow the cleaned pipe to drain by standing it upright,
- ensure the cleaning product has drained out com-
pletely (check areas where liquid may be retained,
e.g. gaiters, resonators etc.).
Dry the pipes one by one using a compressed air spray
gun.
For pipes comprising several components:
- assemble the components, taking note of their correct
fitting position (10) .
Refit:
- the air pipe(between the air filter unit and the turbo-
charger) (A) ,
- the air pipe (B) (between the turbocharger and the in-
tercooler).
Refit the intercooler, if fitted to the vehicle (see 12B,
Turbocharging, Intercooler: Removal - Refitting,
page 12B-59) .
TURBOCHARGING
112771
12B-3
V - LUBRICATION CIRCUIT**: INSTRUCTIONS
FOLLOWING MECHANICAL DAMAGE TO THE
TURBOCHARGER
Note:
(**) These instructions relating to the lubrication cir-
cuit must always be followed in all cases of
mechanical damage as listed above.
Drain the engine oil (see 10A, Engine and cylinder
block assembly, Engine oil: Draining - Refilling,
page 10A-100) .
Replace the oil filter (see 10A, Engine and cylinder
block assembly, Oil filter: Removal - Refitting, page
10A-117) .
Only fill the engine with a suitable oil type (see Engine
oil: Specifications) (Technical Note 6013A, 04A, Lu-
bricants).
VI - GENERAL INSTRUCTIONS TO BE FOLLOWED
WHEN REMOVING A TURBOCHARGER
Always replace:
- the oil supply pipe:
• if the pipe is blocked, even partially (due to scale,
carbonised oil etc.),
• if the pipe is fitted with self-retaining seals.
- the oil return pipe:
• if the pipe is blocked, even partially (due to scale,
carbonised oil etc.),
• if the pipe is fitted with self-retaining seals.
- all seals that have been removed,
- all fittings that have been removed.
WARNING
Failure to observe the following procedure may lead
to destruction of the turbocharger.
When starting the engine:
- do not accelerate,
- allow the engine to run for 1 minute,the time taken for
the oil circuit pressure to increase (until the oil pres-
sure warning light on the instrument panel goes out),
- accelerate several times at no load,
- check the air circuit and the oil circuit for leaks.
12B