Renault Duster 2007 Manual page 154

TOP AND FRONT OF ENGINE
Camshaft: Removal - Refitting
K4M
a Remove:
- the valve rockers (3) ;
- the hydraulic tappets (4) .
Note:
T o prevent any risk of unpriming the hydraulic
tappets make sure that they are vertical.
REFITTING
I - REFITTING PREPARATION OPERATION
a Refit the camshafts while positioning them correctly
(see ) (Technical Note 6023A, 10A, Engine and pe-
ripherals).
Note:
It is essential to reprime the hydraulic tappets as
these may become drained if removed for a long
time.
a To check if re-priming is necessary, press the top of
the tappet with your thumb. If the tappet piston de-
presses, immerse the tappets in a container full of
diesel then reprime them.
Replacing a camshaft dowel
a
Note:
It is essential to replace the camshaft dowel if it
comes loose at the same time as the nut.
a - Removal
a Place the camshaft in a vice with aluminium jaws.
14499
a Remove the dowel using a roller-type stud remov-
al tool (5) .
b - Cleaning the camshaft
a
Note:
Clean the thread hole of the camshaft carefully to
prevent foreign bodies from entering the latter.
Failure to follow this advice could lead to the
blocking of the oil inlet holes, which would quickly
result in engine damage.
c - Refitting
a Place the camshaft in a vice with aluminium jaws.
11A-51
11A
109050