Mitsubishi 4G1 Service Manual page 455

Camshaft sprocket
Intake Dowel
Screwdriver
TSB Revision
(1) Turn the two sprockets so that their dowel pins are located
on top. Then, align the timing marks facing each other with
the top surface of the cylinder head. When you let go of the
exhaust camshaft sprocket, it will rotate one tooth in the
counterclockwise direction. This should be taken into
account when installing the timing belt on the sprockets.
NOTE
The same camshaft sprocket is used for the intake and
exhaust camshafts and is provided with two timing marks.
When the sprocket is mounted on the exhaust camshaft,
use the timing mark on the right with the dowel pin hole on
top. For the intake camshaft sprocket, use the one on the
left with the dowel pin hole on top.
(2) Align the crankshaft sprocket timing mark.
(3) Align the oil pump sprocket timing mark (Engine with silent
shafts).
through the 'hole (Engine with silent shafts).
If it can be inserted as deep as 60 mm (2.4 in.) or more, the
timing marks are correctly aligned. If the inserted depth is
only 20 - 25 mm (.8 - 1 .O in.), turn the oil pump sprocket
one turn and realign timing marks. Then check to ensure
that the screwdriver can be inserted 60 mm (2.4 in.) or
more. Keep the screwdriver inserted until the installation of
the timing belt is finished.
NOTE
Step (4) is performed to ensure that the oil pump sprocket
is correctly positioned with reference to the silent shafts.