Tools Required
• | J 42069 Timing
Belt Alignment Kit |
Installation and Initial Adjustment Procedure
Notice: When installing a new or used timing belt, the directional arrows on
the timing belt must be matched with the rotation of the crankshaft. If this
precaution is not observed, excessive wear and timing belt failure may occur.
Important: Guide marks are printed on the timing belt to aid in installation. If
these marks are not identifiable, install a new belt.
Arrows are printed on the timing belt indicating the required direction
of travel. When installing the timing belt, ensure the arrows are traveling
in engine rotational direction, clockwise.
Do not crimp or bind the timing belt when handling or installing.
- Install the J 42069-1 and J 42069-2 to hold
camshafts.
- Slip the timing belt though
the 3 and 4 camshaft simultaneously, ensuring the dash marks on the
timing belt align with the marks on the camshaft gears and the notches on
the rear timing belt cover.
- Route the timing belt through the upper idler pulley.
- Slip the timing belt though the 1 and 2 camshaft gears
simultaneously, ensuring the dash marks on the timing belt align with the
marks on the camshaft gears and the notches on the rear timing belt cover.
- Route the timing belt through the timing belt tensioner.
- Ensure the crankshaft is at TDC.
- Install the timing belt on the crankshaft drive gear with the
double dash mark on the belt aligned with the marks on the oil pump and on
the belt drive gear.
- Using the J 42098
rotate the crankshaft to 3° before TDC making sure the timing belt does
not jump teeth.
Notice: Refer to Fastener Notice in the Preface section.
- Install the lower idler pulley with the timing belt on it.
- Install the lower idler pulley bolt.
Tighten
Tighten the lower idler pulley bolt to 40 N·m (30 lb ft).
- Turn the crankshaft back to TDC, using the J 42098
.
- Apply tension to the timing
belt, at the upper idler pulley by turning the high point of the eccentric
to approximately the 9 o'clock position. Tighten the idler pulley locking
bolt, while holding the eccentric with the J 42069-40, until
snug.
- Rotate the tensioner eccentric
counter clockwise to full stop, turn the eccentric back until the reference
mark is (a) 1 mm (0.039 in) over the flange.
- Tighten the timing belt tensioner until snug, the locking nut
will be tightened to specifications after all final adjustments are made.
- Inspect the alignment
marks on the timing belt to ensure that they are aligned with the appropriate
reference points on the camshaft gears, the rear timing belt cover and on
the oil pump housing.
- Rotate the crankshaft,
with the J 42098
, in the
clockwise direction 2 revolutions stopping at 60 degrees BTDC.
- Remove the J 42069-1
and J 42069-2.
- Install the J 42069-10
to the crankshaft drive gear.
- Turn the crankshaft until the lever of the J 42069-10
firmly contacts the water pump flange.
- Secure the moveable lever of the tool to the water pump pulley
flange.
Important: The alignment marks on the timing belt will no longer align with the
marks on the camshaft gears after one or more engine revolutions.
- Inspect the alignment of the reference marks on the camshaft gears with
the notches on the rear timing belt cover.
- Inspect the alignment of the reference mark on the crankshaft drive
gear and oil pump housing.
Important: The reference marks on both sets of the camshaft gears must match exactly
with the marks on the J 42069-20 checking gage.
- Use the J 42069-20 to inspect the alignment of the camshaft
gears 3 and 4.
- Use the J 42069-20 to inspect the alignment of the
camshaft gears 1 and 2.
- If timing belt adjustment
IS REQUIRED, refer to Timing Belt Timing Procedure.
- If timing belt adjustment IS NOT REQUIRED, set the final timing
belt tension:
26.1. | Loosen the timing belt eccentric locking nut. |
26.2. | Turn the eccentric counter clockwise to full stop, then back until
the reference mark is (a) 3-4 mm (0.118-0.158 in)
above the mark on the flange. |
Tighten
Tighten the timing belt tensioner eccentric locking nut to 20 N·m
(15 lb ft).
- Hold the upper idler pulley
eccentrics in place with the J 42069-40.
Tighten
Tighten the upper idler pulley bolt to 40 N·m (30 lb ft).
- Remove the J 42069-10
from the engine.
- For final inspection rotate
the engine in the clockwise direction two revolutions until reaching 60 degrees
BTDC.
- Install the J 42069-10
to the crankshaft drive gear.
- Turn the crankshaft until
the lever of the J 42069-10 firmly contacts the water pump flange.
- Secure the moveable lever of the tool to the water pump pulley
flange.
Important: The alignment marks on the timing belt will no longer align with the
marks on the camshaft gears after one or more engine revolutions.
- Inspect the alignment of the reference marks on the camshaft gears with
the notches on the rear timing belt cover.
- Inspect the alignment
of the reference mark on the crankshaft drive gear and oil pump housing.
- Use the J 42069-20 to inspect the alignment of the camshaft
gears 3 and 4.
- Use the J 42069-20 to inspect the alignment of the
camshaft gears 1 and 2.
- If the reference marks on the camshaft gears do not match exactly,
timing belt adjustment IS REQUIRED.
Refer to the Timing Belt Timing
Procedure.
- If the reference marks match exactly, further timing belt adjustment
IS NOT necessary.
Continue with reassembly of the engine.
- Ensure all of the tools are removed from the engine.
Timing Belt Timing Procedure
Important: The following steps are the continuation of installing the timing belt
and must not be performed as a stand-alone operation.
It is not uncommon to repeat steps and make several engine revolutions
to achieve the proper level of timing belt adjustment.
- Apply the J 42069-20 checking gage to camshaft gears 1
and 2.
- Inspect the relationship of the marks on the camshaft gears to
the marks on the J 42069-20 checking gage. They must match exactly,
if not, timing belt adjustment is required.
- Continue to the next applicable procedure.
Marks on Camshaft Gears 1 and 2 Align to the LEFT of J 42069-20
- Loosen the timing belt idler pulley for camshaft gears 1
and 2.
- Use the J 42069-40
adjustment wrench to turn eccentric on the idler pulley COUNTERCLOCKWISE until
the marks on the camshaft gears and on the J 42069-20 checking gage
are in alignment, the high point of the idler pulley eccentric will be in
approximately the 9 o'clock position.
Tighten
Tighten the timing belt idler pulley bolt, while holding the eccentric
in place with the J 42069-40 adjustment wrench to prevent movement,
to 40 N·m (30 lb ft).
- Remove the J 42069-10 crankshaft locking tool and the J 42069-20
checking gage.
- Turn the crankshaft in the engine rotational direction 2 revolutions
with the J 42098
. Stop
at 60 degrees BTDC.
- Install the J 42069-10 crankshaft locking tool to the crankshaft
drive gear with the knurled bolt.
- Use the J 42098
to carefully turn the crankshaft until the lever of the J 42069-10
firmly contacts the water pump pulley flange.
- Secure the moveable lever of the tool to the water pump pulley
flange.
- Install the J 42069-20 checking gage to camshaft gears 1 &
2.
- Inspect the alignment of the marks on the camshaft gears in reference
to the marks on the J 42069-20 checking gage.
- Repeat the procedure again if the marks do not align.
- If camshaft gears 1 and 2 are properly aligned, set the
final timing belt tensioner as outlined in Timing Belt Tensioner Adjustment
at the end of this procedure.
Marks on Camshaft Gears 1 and 2 Align to the RIGHT of J 42069-20
- Loosen the timing belt idler pulley for camshaft gears 1
and 2.
- Slacken the timing belt
by turning the eccentric on the idler pulley CLOCKWISE with the J 42069-40
adjustment wrench until the marks on the camshaft gears and the marks on the
J 42069-20 checking gage are in alignment, the high point of the idler
pulley eccentric will be in approximately the 9 o'clock position.
Tighten
Tighten the timing belt idler pulley bolt, while holding the eccentric
in place with the J 42069-40 adjustment wrench to prevent movement,
to 40 N·m (30 lb ft).
- Remove the J 42069-10 crankshaft locking tool and the J 42069-20
checking gage.
- Turn the crankshaft in the engine rotational direction 2 revolutions
with the J 42098
. Stop
at 60 degrees BTDC.
- Install the J 42069-10 crankshaft locking tool to the crankshaft
drive gear with the knurled bolt.
- Use the J 42098
to carefully turn the crankshaft until the lever of the J 42069-10
firmly contacts the water pump pulley flange.
- Secure the moveable lever of the tool to the water pump pulley
flange.
- Install the J 42069-20 checking gage to camshaft gears 1
and 2.
- Inspect the alignment of the marks on the camshaft gears in reference
to the marks on the J 42069-20 checking gage.
- Repeat the procedure again if the marks do not align.
- If camshaft gears 1 and 2 are properly aligned, set the
final timing belt tensioner as outlined in Timing Belt Tensioner Adjustment
at the end of this procedure.
Timing Belt Tensioner Adjustment
Important: The following steps are the COMPLETION of adjusting the timing belt
and must not be performed as a stand alone operation.
- With the J 42069-10 in place locking the crankshaft at
TDC:
1.1. | Loosen the timing belt
tensioner eccentric locking nut. |
1.2. | Turn the eccentric counterclockwise to full stop, then back until
the reference mark is 3-4 mm (0.118-0.157 in) ABOVE the
reference mark on the flange. |
Tighten
Tighten the timing belt tensioner locking nut to 20 N·m
(15 lb ft).
- If the timing belt upper idler pulley bolts have not been previously
torqued to specification:
Tighten
Tighten the timing belt idler pulley bolts while holding the eccentric
in place with the J 42069-40 adjusting wrench to prevent movement,
to 40 N·m (30 lb ft).
- Remove all checking tools.
- As a final inspection, once again rotate the engine in the clockwise
direction 2 revolutions until reaching 60 degrees BTDC.
- Install the J 42069-10 crankshaft locking tool to the crankshaft
drive gear with the knurled bolt.
- Use the J 42098
to carefully turn the crankshaft until the lever of the J 42069-10
firmly contacts the water pump pulley flange.
- Secure the moveable lever of the tool to the water pump pulley
flange.
- Inspect the alignment of the reference marks on the camshaft gears
with the notches on the rear timing belt cover, as well as, the mark on the
crankshaft gear with the mark on the oil pump housing.
- Inspect the alignment of the marks on all four camshaft gears
in reference to the marks on the J 42069-20 checking gage.
- Repeat the Timing Belt Timing Procedure again if the marks do
not align.
- Continue with the engine reassembly if further timing belt adjustment
is not needed.