27
Maintenance work on engines must be carried out only by
experienced mechanics. Always wear personal protective equipment.
Figure
q
, page 4
•
Camshaft Setting
3888-9 (Exhaust) and 3888-10 (Inlet)
• Fit Setting Plate 3888-9 over exhaust
camshaft and Plate 3888-10 over inlet
camshaft, ensuring they fit into the grooves
in the camshafts, and then bolt firmly in
position.
NOTE:
The lever arm of Setting Plate
3888-9 is also used for tensioner
roller positioning.
• Release the tension and remove the old
timing belt together with the exhaust
camshaft sprocket only.
• Vehicle maker advises that tensioner and
guide roller need to be replaced with new
when replacing the timing belt. (Observe
vehicle manufacturer’s instructions)
• Fitting new belt and tensioning
procedure
• Fit the new timing belt together with the
exhaust camshaft sprocket. All camshaft
sprocket bolts should be finger-tight only
and positioned in the centre of the
elongated holes.
NOTE:
The lever arm on the Exhaust Cam
Setting Plate 3888-9 should rest on
the pointer of the tensioner and
must move freely up and down.
Figure
w
, page 4
•
Initial Tensioner Positioning
• Turn tensioner roller
anti-clockwise
so
pointer pushes the lever arm of 3888-9
upwards until the
upper part of the arm
(not the small raised portion) is level with
the upper edge
of the Setting Plate.
The tensioner pointer should now be in a
position (A)
. Tighten tensioner bolt and the
six camshaft sprocket bolts.
• Remove 3888-8 Pin and 3888-9 and Setting
Plates 3888-10. Turn the crankshaft
clock-
wise
two revolutions by hand and return
engine to TDC position.
Figure
e
, page 5
•
Final Tensioner Position
• Insert the Crank Locking Pin fit the two
Camshaft Setting Plates, bolting them firmly
in place.
• Slacken the six camshaft sprocket bolts and
tensioner bolt.
• Turn tensioner
clockwise
so it adjusts the
small raised portion
of the lever arm
to be
level with the upper edge
of the Setting
Plate.
• Check that the tensioner pointer is now
aligned within the groove to be in
position
(B)
.
• Tighten tensioner bolt and the six camshaft
sprocket bolts and remove all tools.
4.2 PETROL ENGINES
Crankshaft Locking Pins
➪
For model usage / engine codes
refer to Application Chart, pages 6-8.
Figure
1
and
5
,
page 3
•
Locking Pins 3888-1, 3888-13 and
3888-15
• These Crankshaft Locking Pins lock the
engine in timing position. They enter datum
holes in the engine block and locate onto
the crankshaft.
•
Pins 3888-1 or 3888-15
(see Pin Guide
below) locate into a slot in the crankshaft
web. Always move crankshaft slightly
forwards and backwards to be certain the
pin is inserted in the slot correctly.
• Pin 3888-13 (see Pin Guide below) screws
into the datum hole and the end of the Pin
presses against a ‘flat’ on the crankshaft
web.
Pin Guide:
3888-1
For most single cam and
F4P/F4R twin cams
3888-13
For K4J/K4M twin cams
3888-15
For N7Q/N7U twin cams
왘
GB
USA
Composition and Function
