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ENGINE <4D6> -
Timing Belt
11C-28
INSTALLATION SERVICE POINTS
"
A
A
TIMING BELT INSTALLATION
1. Ensure that the timing marks of the camshaft sprocket,
the injection pump sprocket, the crankshaft sprocket, and
the oil pump sprocket are all aligned.
2. Move the timing belt tensioner downward and loosely
tighten the bolt so that the tensioner doesn’t return.
3. Install the timing belt onto the crankshaft sprocket, the
timing belt idler, the camshaft sprocket, the injection pump
sprocket, and the oil pump sprocket in that order.
Caution
If the timing belt is reused, install so that the arrow
marked on it at the time of removal is pointing in
the clockwise direction.
"
B
A
TIMING BELT TENSION ADJUSTMENT
1. Turn the crankshaft anti-clockwise by a distance
equivalent to 1/2 tooth of the camshaft sprocket in order
to correct looseness at th e timing belt idler side.
2. Loosen (by 90_ to 120_ turn) the tensioner installation
bolt previously secured provisionally, taking advantage
of the force of the tensioner spring to provide tension
to the belt.
3. Inaddition, turn the crankshaft anti-clockwise by adistance
equivalent to 2-1/2 teeth.
4. Tighten the timing belt tensioner to the specified torque.
Tightening torque: 48 Nm
5. Turn the crankshaft clockwise an d align t he timing mark.
Timing marks
Injection
pump
sprocket
Camshaft sprocket
Timing mark
Timing mark
Oil pump
sprocket
Crankshaft
sprocket
Move to the
bottom of the slot.
Timing mark
1/2 tooth
Timing mark
2-1/2 teeth
Timing mark
Timing mark