3306 VEHICULAR ENGINE FOR D5B, D6D & D7G TRACTORS – Valves (DI)

NOTE: GUIDELINE FOR REUSABLE PARTS: VALVES AND VALVE SPRINGS, Forms SEBF8002 and SEBF8034 have the procedure and specifications necessary for checking used valves and valve springs.

(1) 7S7144 Spring for valves (new):

Length under test force … 1.766 in.(44.86 mm)

Test force … 57.7 ± 4.5 lb.(256.7 ± 20 N)

Use again minimum load at length under test force … 46.5 lb.(207 N)

Length of spring at valve open position … 1.271 in.(32.28 mm)

Use again minimum load at valve open position … 144.4 lb.(642 N)

Free length after test … 2.05 in.(52.1 mm)

Outside diameter … 1.386 in.(35.20 mm)

Spring must not be bent more than … .072 in.(1.83 mm)

(2) Height to top of valve guide … .875 in.(22.23 mm)

(3) Diameter of valve stem (new) … .3717 ± .0003 in.(9.441 ± 0.008 mm)

Use again minimum diameter … .3704 in.(9.408 mm)

Bore in valve guide with guide installed in the head.

Minimum permissible (new) … .3723 in.(9.456 mm)

Maximum permissible (worn) … .3772 in.(9.581 mm)

(4) Valve lip thickness:

6N9916 Exhaust Valve.

Use again minimum … .106 in.(2.69 mm)

6N9915 Intake Valve and 7N573 Exhaust Valve.

Use again minimum … .096 in.(2.44 mm)

(5) Diameter of valve head:

Exhaust valves … 1.896 ± .005 in.(48.16 ± 0.13 mm)

Intake valve … 2.020 ± .005 in.(51.31 ± 0.13 mm)

(6) Angle of valve face … 29 1/4°

(7) Depth of bore in head for valve seat insert … .488 ± .005 in.(12.41 ± 0.13 mm)

(8) Diameter of valve seat insert for exhaust valve … 2.0035 ± .0005 in.(50.889 ± 0.013 mm)

Bore in head for valve seat insert for exhaust valve … 2.0005 ± .0005 in.(50.813 ± 0.013 mm)

Diameter of valve seat insert for intake valve … 2.0485 ± .0005 in.(5.032 ± 0.013 mm)

Bore in head for valve seat insert for intake valve … 2.0455 ± .0005 in.(51.956 ± 0.013 mm)

(9) Angle of face of valve seat insert … 30°

(10) Maximum permissible width of valve seat (intake and exhaust) … .076 in.(1.93 mm)

Minimum permissible width of valve seat (intake and exhaust) … .045 in.(1.14 mm)

(11) Dimension from top of closed valve to face of head:

Minimum permissible dimension for 7N573 and 6N9916 Exhaust Valve … .026 in.(0.66 mm)

Minimum permissible dimension for 6N9915 Intake Valve … .006 in.(0.15 mm)

(12) Outside diameter of the face of the valve seat insert:

Exhaust seat … 1.812 in.(46.02 mm)

Maximum permissible, exhaust seat … 1.862 in.(47.29 mm)

Intake seat … 1.940 in.(49.28 mm)

Maximum permissible, intake seat … 1.990 in.(50.55 mm)

(13) Angle to grind seat face of the insert to get a reduction of maximum seat diameter … 15°

Posted in D6Tagged