ENGINE <4D5-Step
III
> -
Timing Belt and Timing Belt B
ENGINE <4D5-Step
III
> -
Timing Belt and Timing Belt B
11-9
INSTALLATION SERVICE POINTS
"
A
A
TIMING BELT B INSTALLATION
1. Align the timing marks of the 3 sprockets.
2. When reusing timing belt B, make sure the arrow mark
is pointing in the same direction as when the belt was
removed.
3. Install timing belt B and make sure there is no deflection
on the tension side.
4. Press the deflection side of timing belt B with the hand
and fully stretch the tensioner side.
5. Make sure that the timing marks are aligned.
6. Loosen the tensioner mounting bolt and nut so that only
the pressure of the spring is applied to timing belt B.
7. Tighten the tensioner mounting bolt C and nut D, tightening
the nut first. If the bolt is tightened first, the tensioner
will move and tension the belt.
Tightening torque: 26
±
3 N·m
8. Press in the direction of the arrow in the figure with the
index finger to check the amount of deflection.
Standard value: 4 - 5 mm
"
B
A
TIMING BELT INSTALLATION
1. Align the timing marks of the 3 sprockets.
2. When reusing timing belt, make sure the arrow mark is
pointing in the same direction as when the belt was
removed.
3. Install the timing belt to the crankshaft sprocket, to injection
pump sprocket, to tensioner and to camshaft sprocket
in that order. Being careful not to allow deflection on
the tension side of the timing belt.
Caution
(1) Engage the belt on the various sprockets while
maintaining tension on the belt of tension side.
(2) Align the injection pump sprocket with the timing
mark, hold the sprocket so that is does not turn
and engage the belt.
4. Loosen the tensioner mounting bolts and apply tension
with the spring.
Timing mark
Timing
marks
Tension
side
D
C
Deflection
side
Counterbalance
shaft sprocket
Belt deflection
Crankshaft
sprocket B
Timing marks
Water pump
Tension
side
Tension side
