Checking camshaft timing

AR05.20-D-6015A

ENGINE 601.943, 602.980 in MODEL 901, 902, 903, 904

ENGINE 602.984 in MODEL 667, 668, 670

ENGINE 602.985 in MODEL 668, 670

D05.20-0001-06

1 Cylinder head cover

2 Hexagon bolts

3 Gasket

4 Valve tappet

5 Cylinder head

 	Removing, installing
1	Remove glow plugs, install		AR15.20-D-4111A
2	Remove cylinder head cover together with gasket	Engine 601.943
		Engine 602.980	AR01.20-D-5014A
		Engine 602.984/985	AR01.20-D-5014B
3	Crank engine until inlet valve of the first cylinder is completely closed	 Do not crank engine at the bolt of the camshaft sprocket.  Crank engine in direction of running. The lobe of the cam is facing up.
4	Measure timing of camshaft		AR05.20-D-6015-01A
			*136589042100
			*001589532100
			*366589002105
			*BE05.20-N-1001-02B
			*BE05.20-N-1002-02B
			*BE05.20-N-1003-02B
		If the specifications are not achieved 	*BE05.20-N-1004-02B
		inspect camshaft for wear or inspect stretch of timing chain.  If difference is greater than 4° 
		replace timing chain, Engine 601.943, 602.980	AR05.10-D-7601A
		replace timing chain, Engine 602.984/985	AR05.10-D-7601B
5	Install in the reverse order

Test data of camshaft timing

Number	Designation			Engine 602.980	Engine 601.943	Engine 602.984/ 985


BE05.20-N-1001-02B	Inlet valve timing with 2 mm valve lift and new timing chain	opens after TDC	°CA	19	11	19
		closes after BDC	°CA	12.5	17	12.5
BE05.20-N-1002-02B	Exhaust valve timing with 2 mm valve lift and new timing chain	opens before BDC	°CA	22.5	28	22.5
		closes before TDC	°CA	21.5	15	21.5
BE05.20-N-1003-02B	Inlet valve timing with 2 mm valve lift and used timing chain	opens after TDC	°CA	20	12	20
		closes after BDC	°CA	13.5	18	13.5
BE05.20-N-1004-02B	Exhaust valve timing with 2 mm valve lift and used timing chain	opens before BDC	°CA	21.5	27	21.5
		closes before TDC	°CA	20.5	14	20.5

366 589 00 21 05

001 589 53 21 00

136 589 04 21 00

Extension

Dial gage holder

Dial gage