Renault F4R - Page 439

12B-3
TURBOCHARGING
Turbocharging: Precautions for repair
F4R or F9Q or K9K
12B
Clean the removed pipes one by one using the clea-
ning station:
- 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 comple-
tely (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 (A) (between the air filter box and the tur-
bocharger),
-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-37) .
V - LUBRICATION CIRCUIT**: INSTRUCTIONS
FOLLOWING MECHANICAL DAMAGE TO THE
TURBOCHARGER
Drain the engine oil (see 10A, Engine and cylinder
block assembly, Engine oil: Draining - Refilling,
page 10A-40) .
Replace the oil filter (see 10A, Engine and cylinder
block assembly, Oil filter: Removal - Refitting, page
10A-48) .
Fill the engine with a suitable oil type only (see Engine
oil: Specifications) (Technical Note 6013A, 04A, Lu-
bricants).
VI - GENERAL INSTRUCTIONS TO BE FOLLOWED
WHEN REMOVING A TURBOCHARGER
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.
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 pressu-
re warning light on the instrument panel goes out),
- accelerate several times at no load,
- check the air circuit and the oil circuit for leaks.
112771
Note:
(**) These instructions relating to the lubrication cir-
cuit must always be followed in all cases of mecha-
nical damage as listed above.
WARNING
Failure to observe the following procedure may lead
to destruction of the turbocharger.