DAF CF65, CF75, CF85 Series . Manual — part 247

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Inspection and adjustment

XE ENGINE

CF65/75/85 series

2

8

3.2 REMOVAL AND INSTALLATION, VALVE COVER

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When the engine or parts thereof are

opened, dirt may penetrate. This

may cause serious damage to the

engine. Therefore, the engine should

be cleaned thoroughly before any

parts are opened.

Removing the valve cover
1.

Clean the area around the valve cover.

2.

Remove the attachment bolts from the valve

cover.

3.

Remove the valve cover and the valve cover

gasket.

Installing the valve cover
1.

Clean the sealing surface of the valve sleeve

and the valve cover.

2.

Fit the valve cover using a new valve cover

gasket.

3.

Fit the attachment bolts of the valve cover

and tighten them to the specified torque. See

the main group "Technical data".

XE ENGINE

3-4

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Inspection and adjustment

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CF65/75/85 series

2

3.3 INSPECTION AND ADJUSTMENT, TIMING GEAR

Checking the timing gear
1.

Remove the valve cover from cylinders

1-2-3. See "Removal and Installation".

2.

Position cylinder 1 at top dead centre

(TDC on the flywheel, cylinder 6 in overlap

position).

3.

Remove the timing gear cover. See

"Removal and installation".

Note:

When the crankshaft (1) or the camshaft (2)

of an engine is rotated separately without an

idler gear (3), the engine's pistons may touch

the valves.

4.

Remove the idler gear (3). See "Removal

and installation".

5.

Now put the idler gear (3) back in such a way

that the marks on it line up with the marks on

the camshaft gear (2), the crankshaft gear

(1) and the pump housing gear (4).

6.

If the marks are not in line, the timing gear

must be adjusted.

7.

Tighten all attachment bolts that have been

removed to the specified torque. See

"Technical data".

M201185

M201281

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3

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Inspection and adjustment

XE ENGINE

CF65/75/85 series

2

8

Adjusting the timing gear
1.

Remove the valve cover from cylinders 1-2-

3. See "Removal and Installation".

2.

Position cylinder 1 at top dead centre (TDC

on the flywheel, cylinder 6 in overlap

position).

3.

Remove the timing gear cover. See

"Removal and installation".

Note:

When the crankshaft (1) or the camshaft (2)

of an engine is rotated separately without an

idler gear (3), the engine's pistons may touch

the valves.

4.

Remove the idler gear (3). See "Removal

and installation".

5.

Rotate the camshaft gear (2) to such a

position that the idler gear (3) can be

installed in accordance with the marks.

6.

Fit the idler gear and tighten the attachment

bolt to the specified torque. See "Technical

data".

7.

Fit the timing cover. See "Removal and

installation".

8.

Fit the valve cover. See "Removal and

installation".

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1

3

4

XE ENGINE

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Inspection and adjustment

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CF65/75/85 series

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3.4 INSPECTION OF AUTOMATIC POLY-V-BELT TENSIONER

Inspection of automatic poly-V-belt tensioner
1.

Remove the poly-V-belt and switch off the

automatic tensioner (0). See "Removal and

installation".

2.

Place a torque wrench on the hexagonal

head of the automatic tensioner.

3.

At the specified torsional distance (A) the

torsional moment must have a certain value.

See "Technical data".

The automatic tensioner must be replaced if

the measured value is not the same as the

check value.

4.

Fit the poly-V-belt. See "Removal and

installation".

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