Perkins珀金斯850-854F柴油发动机T412207机油泵

Cylinder head

To check the distortion of the lower face

Operation 3-19

Special requirements

Maximum machine limit mm (in)

Distortion

Max service limit

Max regrind

0,05 (0.002) OR LESS

0,12 (0.005)

0,15 (0.006)

Using a straight edge (A1) and feeler gauge (A2) check the six positions (lines B1 to B6) for distortion. Do not

machine beyond the maximum limit.

1

2

1

3

4

5

6

2

Workshop Manual, TPD 1377E, issue 4

43

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3

100 Series

Valve seat width

To correct

Operation 3-20

If the contact width (B1) of the valve seat is more than service limit, check wear condition of the valve guide

first.

Using a seat cutter of 45° correct the seat.

Intake valve

Clearance mm (in)

Engine model

Standard

1,59 - 1,80 (0.0626 - 0.0709)

1,70 - 2,10 (0.0670 - 0.0830)

1,66 - 1,87 (0.0653 - 0.0736)

1,50 - 2,00 (0.0591 - 0.0790)

Service limit

2,5 (0,098) max

2,5 (0,098) max

2,5 (0,098) max

2,5 (0,098) max

102-05, 103-07

103-10

103-13, 103-15

104-19, 104-22

Exhaust valve

Clearance mm (in)

Engine model

Standard

1,59 - 1,80 (0.0626 - 0.0709)

1,70 - 2,10 (0.0670 - 0.0830)

1,66 - 1,73 (0.0653 - 0.0681)

1,94 - 2,16 (0.0764 - 0.0850)

Service limit

2,5 (0,098) max

2,5 (0,098) max

2,5 (0,098) max

2,5 (0,098) max

102-05, 103-07

103-10

103-13, 103-15

104-19, 104-22

45°

1

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Workshop Manual, TPD 1377E, issue 4

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3

100 Series

Valve depth

To correct

Operation 3-21

Special requirements

Depth (A1) mm (in)

Engine model

Standard

Service limit

1,8 (0.071) max

1,8 (0.071) max

1,8 (0.071) max

1,8 (0.071) max

102-05, 103-07

103-10

0,70 - 0,90 (0.0276 - 0.0354)

0,85 - 1,15 (0.0335 - 0.0453)

0,85 - 1,15 (0.0335 - 0.0453)

0,65 - 0,95 (0.0256 - 0.0374)

103-13, 103-15

104-19, 104-22

Rectify if the depth is more than the service limit.

1

Workshop Manual, TPD 1377E, issue 4

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3

100 Series

Valve seat contact face

Lapping

Operation 3-22

Correct valve seat contact using a valve lapping tool and lapping compound.

Note:   When using a new cylinder head, obtain correct seat contact width and seat recess using the seat

cutter, then carry out a final lap.

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Workshop Manual, TPD 1377E, issue 4

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3

100 Series

Valve tip clearance

To check

Operation 3-23

The valve sequence is viewed from the front of the engine.

Rotate the crankshaft clockwise when viewed from the front.

Adjust the clearance of both intake and exhaust valves to 0,2 mm (0.0078 in).

Note:  Always adjust when the engine is cold.

Engine model

Valve overlap

Adjust valves

No.1 Cyl

No.2 Cyl

No.1 Cyl

No.2 Cyl

No.3 Cyl

No.4 Cyl

No.2 Cyl

No.1 Cyl

No.3 Cyl

3 and 4

1 and 2

3 and 6

2 and 5

1 and 4

1 and 2

5 and 6

7 and 8

3 and 4

2 Cylinder engines

3 Cylinder engines

4 Cylinder engines

Workshop Manual, TPD 1377E, issue 4

47

This document has been printed from SPI². Not for Resale

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This document has been printed from SPI². Not for Resale