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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3-5

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

3-6

©

 200351

Inspection and adjustment

2

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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