Replace valve seat rings

AR05.30-T-3831B

19.5.00

ENGINE 441.980 in MODEL 613.355 /364 /365

ENGINE 402.970, 446.938 in MODEL 613.455 /485

T01.30-0007-06

1 Valve seat ring of inlet valve

2 Valve seat ring of exhaust valve

3 Cylinder head

4  Drift with spacer bush

a Outer diameter of valve seat ring

b Height of valve seat ring

B Bore diameter of valve seat rings in cylinder head

C Bore depth of valve seat ring in cylinder head

Modification notes

30.10.00	Figure modified from 8.8...8.9 mm to 8.3...8.4 mm Figure modified from 9.0...9.1 mm to 8.5...8.6 mm Figure modified from 9.2...9.3 mm to 8.7...8.8 mm	Figure in BE05.30-N-1001-03F for engine 402.970 modified	*BE05.30-N-1001-03F
30.10.00	Figure modified from 9.6...9.7 mm to 9.1...9.2 mm Figure modified from 9.8...9.9 mm to 9.3...9.4 mm Figure modified from 10.0...10.1 mm to 9.5...9.6 mm	Figure in BE05.30-N-1002-03F for engine 402.970 modified	*BE05.30-N-1002-03F
30.10.00	Figure modified from 3.6...3.8 mm to 4.1...4.3 mm Figure modified from 2.8...3.0 mm to 3.3...3.5 mm	Figure in BE05.30-N-1004-03F for engine 402.970 modified	*BE05.30-N-1004-03F

 	Remove/Install
 Danger!	Risk of injury when handling liquid nitrogen or from touching extremely cool objects. Risk of asphyxiation from inhaling nitrogen gas.	Wear heat-protective gloves, protective clothing and full eye protection. Ensure that the work area is adequately ventilated.	AS00.00-Z-0003-01A
1	Inspect valve guides for wear, replace if necessary		AR05.30-T-3731B
2	Remove valve seat rings (1, 2) from the cylinder head (3)		AR05.30-T-3831-01A
			*WE58.40-Z-1010-21A
			*000589303300
			*000589293300
			*000589343300
3	Measure valve seat ring bore diameter (B) in cylinder head (3)	 Insert the dial gage into the quick caliper for internal measurements for this step and set to the necessary diameter with the micrometer.
		Bore diameter of inlet and exhaust valve seat rings	*BE05.30-N-1005-03F
			*001589532100
			*WH58.30-Z-1001-12A
			*WH58.30-Z-1001-12A
			*WH58.30-Z-1002-12A
		 Overlap between the bore diameters in the cylinder head and the outer diameters of the new valve seat rings for inlet and exhaust valves must be assured. If the measurements obtained deviate from the test values: 
		Machine bores in cylinder head to the next oversize of the outer diameter of the new valve seat rings.
		Bore depth for valve seat rings in cylinder head "C"	*BE05.30-N-1006-03F
		Inlet valve seat rings outer diameter	*BE05.30-N-1001-03F
		Exhaust valve seat rings outer diameter	*BE05.30-N-1002-03F
		Overlap of valve seat rings in cylinder head	*BE05.30-N-1003-03F
4	Insert valve seat rings (1, 2) into supercooling box and pour in liquid nitrogen.	 Supercool valve seat rings for about 20 to 30 minutes.
			*346589006300
5	Heat cylinder head (3) to approx. 80 °C	 In water bath.
6	Use pliers to remove valve seat rings (1, 2) from the supercooling box and fit onto the bores of the heated cylinder head (3)
7	Press in valve seat rings (1, 2)	 Fit specified insertion sleeve onto the valve seat ring and insert the drift into the insertion sleeve. Knock in valve seat ring with the plastic-headed hammer.  The valve seat rings must be pressed in without any delay.
			*403589001500
			*403589011500
		Distance between contact surface of cylinder head and end face of valve seat ring	*BE05.30-N-1004-03F
8	Machine valve seat rings	 New valve seat rings must always be machined.
9	Inspect concentricity of valve seat to valve guide		AR05.30-T-4532-02B
		Permissible deviation from smooth operation of valve seat to valve guide	*BE05.30-N-1014-01I
			*001589532100
			*366589006900
			*WH58.30-Z-1001-14A
			*WH58.30-Z-1010-05A
10	Grind valves	 If new valve seat rings are installed, the valves must always be ground.	AR05.30-T-4202-01A
11	Install valves		AR05.30-T-3511B

Inspection data of valve seat rings

Number	Designation				Engine 402.970	Engine 441.980


BE05.30-N-1001-03F	Inlet valve seat ring	Outer  "a"	Standard	mm	60.10...60.11	60.10...60.11
			Oversize 0.2	mm	60.30...60.31	60.30...60.31
			O/U-size 0.4	mm	60.50...60.51	60.50...60.51
		Height "b"	Standard	mm	8.3...8.4	8.3...8.4
			Oversize 0.2	mm	8.5...8.6	8.5...8.6
			O/U-size 0.4	mm	8.7...8.8	8.7...8.8
			Fig. see		AR05.30-T-3831A	AR05.30-T-3831A
BE05.30-N-1002-03F	Exhaust valve seat ring	Outer  "a"	Standard	mm	53.10...53.11	53.10...53.11
			Oversize 0.2	mm	53.30...53.31	53.30...53.31
			O/U-size 0.4	mm	53.50...53.51	53.50...53.51
		Height "b"	Standard	mm	9.1...9.2	9.1...9.2
			Oversize 0.2	mm	9.3...9.4	9.3...9.4
			O/U-size 0.4	mm	9.5...9.6	9.5...9.6
			Fig. see		AR05.30-T-3831A	AR05.30-T-3831A
BE05.30-N-1003-03F	Overlap of valve seat ring in cylinder head		inlet	mm	0.07...0.11	0.07...0.11
			Exhaust	mm	0.07...0.11	0.07...0.11
BE05.30-N-1004-03F	Distance between contact surface of cylinder head and end face of valve seat ring		inlet	mm	4.1...4.3	4.1...4.3
			Exhaust	mm	3.3...3.5	3.3...3.5
BE05.30-N-1005-03F	Bore 	Inlet valve seat rings	Standard	mm	60.00...60.03	60.00...60.03
		in cylinder head "B"	Oversize 0.2	mm	60.20...60.23	60.20...60.23
			O/U-size 0.4	mm	60.40...60.43	60.40...60.43
		Exhaust valve seat rings	Standard	mm	53.00...53.03	53.00...53.03
		in cylinder head "B"	Oversize 0.2	mm	53.20...53.23	53.20...53.23
			O/U-size 0.4	mm	53.40...53.43	53.40...53.43
			Fig. see		AR05.30-T-3831A	AR05.30-T-3831A
BE05.30-N-1006-03F	Bore depth for valve seat rings in cylinder head "C"		Standard	mm	12.5...12.6	12.5...12.6
			Oversize 0.2	mm	12.7...12.8	12.7...12.8
			O/U-size 0.4	mm	12.9...13.0	12.9...13.0
			Fig. see		AR05.30-T-3831A	AR05.30-T-3831A

Inspection data of valve seat rings

Number	Designation				Engine 446.938


BE05.30-N-1001-03F	Inlet valve seat ring	Outer  "a"	Standard	mm	60.10...60.11
			Oversize 0.2	mm	60.30...60.31
			O/U-size 0.4	mm	60.50...60.51
		Height "b"	Standard	mm	8.3...8.4
			Oversize 0.2	mm	8.5...8.6
			O/U-size 0.4	mm	8.7...8.8
			Fig. see		AR05.30-T-3831A
BE05.30-N-1002-03F	Exhaust valve seat ring	Outer  "a"	Standard	mm	53.10...53.11
			Oversize 0.2	mm	53.30...53.31
			O/U-size 0.4	mm	53.50...53.51
		Height "b"	Standard	mm	9.1...9.2
			Oversize 0.2	mm	9.3...9.4
			O/U-size 0.4	mm	9.5...9.6
			Fig. see		AR05.30-T-3831A
BE05.30-N-1003-03F	Overlap of valve seat ring in cylinder head		inlet	mm	0.07...0.11
			Exhaust	mm	0.07...0.11
BE05.30-N-1004-03F	Distance between contact surface of cylinder head and end face of valve seat ring		inlet	mm	4.1...4.3
			Exhaust	mm	3.3...3.5
BE05.30-N-1005-03F	Bore 	Inlet valve seat rings	Standard	mm	60.00...60.03
		in cylinder head "B"	Oversize 0.2	mm	60.20...60.23
			O/U-size 0.4	mm	60.40...60.43
		Exhaust valve seat rings	Standard	mm	53.00...53.03
		in cylinder head "B"	Oversize 0.2	mm	53.20...53.23
			O/U-size 0.4	mm	53.40...53.43
			Fig. see		AR05.30-T-3831A
BE05.30-N-1006-03F	Bore depth for valve seat rings in cylinder head "C"		Standard	mm	12.5...12.6
			Oversize 0.2	mm	12.7...12.8
			O/U-size 0.4	mm	12.9...13.0
			Fig. see		AR05.30-T-3831A

Inspection data of valves

Number	Designation		Engine 402.970	Engine 441.980	Engine 446.938


BE05.30-N-1014-01I	Permissible variation of concentricity of valve seat to valve guide	mm	0.01	0.01	0.01
BE05.30-N-1014-01I	Permissible variation of concentricity of valve seat to valve guide	mm	0.01	0.01	0.01

000 589 29 33 00

000 589 30 33 00

001 589 53 21 00

403 589 00 15 00

Internal extractor

Drift

Dial gage

Internal extractor

346 589 00 63 00

Valve seat turning kit

Supercooling box

Countersupport

Sleeve

000 589 34 33 00

366 589 00 69 00

403 589 01 15 00

Commercially available tools

Number	Designation
WH58.30-Z-1010-05A	Testing kit for valve seats
WH58.30-Z-1001-12A	Quick calipers for internal measurements
WH58.30-Z-1002-12A	Micrometer
WH58.30-Z-1001-14A	Cylinder head holding fixture

Workshop equipment

WE58.40-Z-1010-21A

Valve seat turning device

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