Daewoo Musso. Manual — part 107

OM600 ENGINE MECHANICAL 1B3-135

38 ± 0.2mm

or 37.6 ± 0.2mm

5. Insert the valve (1) into the valve guide according to marking

and measure amount by which the valve arrears ‘a’.

Arrears ‘a’

0.1 - 0.7mm

6. Measure camshaft cam basic circle diameter (w).

Diameter ‘w’

7. Measure distance ‘z’ (cylinder head cover parting surface

- valve stem).

1B3-136 OM600 ENGINE MECHANICAL

I Length of Valve

w Camshaft Cam Basic Circle Diameter

x Distance (Camshaft basic bore - valve stem)

y Half Camshaft Basic Bore Diameter

z Distance (Cylinder head cover parting surface - .

valve stem)

8. Measure ‘x’ (Camshaft basic bore - valve stem).

‘x’ = ‘z’ - ‘y’

9. Determine the valve to be used.

(See ‘Matching valves’)

Example)

Measured value ‘w’ = 38.2 mm

Measured value ‘z’ = 36.5 mm

Value

‘y’ = 15.5 mm

‘x’ = 36.5 - 15.5 = 21.0 mm

In the case of a camshaft cam basic circle diameter
‘w’ = 38.2mm and a distance ‘x’ = 21.0mm, the installed
valve may be used.

OM600 ENGINE MECHANICAL 1B3-137

CAMSHAFT TIMING TEST

Preceding Work : Removal of glow plug

1 Cylinder Head Cover
2 Bolt . . . . . . . . . . . . . . . 10Nm
3 Gasket . . . . . . . . . . . . ... Replace

4 Valve Tappet
5 Cylinder Head

Timing

Condition of camshaft

New

After approx. 20,000km

Intake valve

Open

ATDC 11.33°

ATDC 12°

Close

ABDC 17°

ABDC 18°

Exhaust valve

Open

BBDC 28°

BBDC 27°

Close

BTDC 15.25°

BTDC 14°

«

At 2mm of valve lifting stroke.

1B3-138 OM600 ENGINE MECHANICAL

6. Check the timing.

New

After approx. 20,000km

ATDC 11.33°

ATDC 12°

Notice

If timing is out standard, the camshaft should be checked
for wear and the timing chain for stretch. If a difference of
more than 4° exists, the timing chain should be replaced.

7. Replace the gasket and install the cylinder head cover.

Tightening Torque

10 Nm

Measurement Procedure

1. Remove the cylinder head cover.

2. Rotate the engine in the direction of engine rotation until

the intake valve of NO. 1 cylinder is completely closed. The
cam lobe faces up (arrow).

Notice

Do not rotate the engine at the bolt of the crankshaft
sprocket. Do not rotate the engine in the opposite direction
of engine rotation. If do, this will cause serious measuring
errors.

3. Install the dial gauge holder and dial gauge (7) with the

extension (8) to the cylinder head and position the tracer
pin (9) onto the valve tappet (intake valve of cylinder NO.1)
with a preload of min. 3mm.

Notice

The tracer pin should be positioned exactly vertical.

Dial gauge Holder 363 589 02 21 00

Dial Gauge 001 589 53 21 00

Extension 366 589 00 21 05

4. Set the dial gauge to ‘0’.

5. Rotate the engine further in direction of rotation until the

dial gauge has moved back by 2mm (valve lift) to 1mm.

Tools Required

001 589 53 21 00 Dial Gauge

363 589 02 21 00 Dial Gauge Holder

366 589 00 21 05 Extension