DAF CF65, CF75, CF85 Series . Manual — part 194

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3-3

Inspection and adjustment

CE ENGINE

ΧΦ65/75/85 series

2

2

3.2 INSPECTION AND ADJUSTMENT, TIMING GEAR

Note:
The engine is fitted with gears on either side. The
gears at the vibration damper end only drive the
oil pump. These gears have no marks and may
be fitted in any position.

The timing gear wheels on the flywheel side drive
the camshaft, air compressor and fuel pump.
Only the camshaft gear and the crankshaft gear
have marks which must be aligned. The other
gears may be fitted randomly.

1.

Remove the engine encapsulation panels.

2.

Remove the gearbox.

3.

Remove the flywheel. See "Removal and
installation".

4.

Remove the flywheel housing. See
"Removal and installation".

Note:
When the engine crankshaft or camshaft is
turned separately, the pistons and valves
may touch each other.

CE ENGINE

3-4

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200351

Inspection and adjustment

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ΧΦ65/75/85 series

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5.

Use an open-end spanner on the fan shaft to
crank the engine clockwise, as seen from the
vibration damper end, until the marks in the
crankshaft gear and camshaft gear match.
The crankshaft gear has a punched hole in
the tooth which has to fall into the tooth depth
of the camshaft gear marked with a punched
hole.

6.

Check that the marked tooth falls exactly into
the marked depth. If not, remove and refit the
camshaft gear. See "Removal and
installation".

7.

Fit the flywheel housing. See "Removal and
installation".

8.

Fit the flywheel. See "Removal and
installation".

9.

Fit the gearbox.

10. Fit the engine encapsulation panels.

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200351

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Inspection and adjustment

CE ENGINE

ΧΦ65/75/85 series

2

2

3.3 CHECKING PISTON PROJECTION

1.

Use an open-end spanner on the fan shaft to
turn the crankshaft, so that the piston of
cylinder 1 is in the top dead centre (TDC).

2.

Clean the upper surface of the cylinder block
and the pistons.

3.

Place a dial gauge on the upper surface of
the cylinder block next to cylinder 1 and set
the gauge to zero.

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"0"

CE ENGINE

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Inspection and adjustment

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ΧΦ65/75/85 series

2

4.

Pull up the stylus of the dial gauge and move
the stylus to the first piston above the
gudgeon pin, but not the anodised part of the
piston.

5.

Use an open-end spanner on the fan shaft to
turn the crankshaft anti-clockwise and
clockwise, at the same time reading the dial
gauge to find the highest position of the
piston. Make a note of this reading.

6.

Repeat this measurement for the other
pistons.

7.

Calculate the average value of the piston
projection above the cylinders.

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