KIT-VALVE 2G5986 - Caterpillar

Illustration 1 g01308720 (1) Assembled height of rocker arm support dowels ... 8.0 1.0 mm (0.32 0.04 inch) (2) Inside diameter of assembled valve guides ... 16.055 0.013 mm (0.6321 0.0005 inch) (3) Assembled height of bridge dowels ... 105.0 2.0 mm (4.13 0.08 inch) (4) 1W-1749 Spring inner spring for valve Length under test force ... 79.3 mm (3.12 inch)Test force ... 361 36 N (80 8 lb)Free length after test ... 107.0 mm (4.21 inch)Outside diameter ... 47.9 mm (1.89 inch) (5) 1W-1748 Spring outer spring for valve Length under test force ... 84.9 mm (3.34 inch)Test force ... 758 76 N (170 17 lb)Free length after test ... 114.0 mm (4.49 inch)Outside diameter ... 68.0 mm (2.68 inch) (6) Assembled height of valve guides ... 20.0 2.0 mm (0.79 0.08 inch) (A) Maximum depth for the prechamber seat ... 230.5 mm (9.075 inch)
Assemble the seals, the gasket, and the washers to the cylinder head. Tighten the nuts by hand.
Simultaneously tension each set of the cylinder head studs with either of the following tensioners: 207-5034 Stud Tensioner Tool Gp ... 40000 1520 kPa (5800 220 psi) 191-5320 Stud Tensioner Tool Gp ... 125000 4920 kPa (18130 715 psi)
Tighten the nuts by hand.
Slowly release the pressure.
Repeat Step 2 through Step 4. (8) Thickness of combustion gasket ... 4 0.05 mm (0.158 0.002 inch)Surfaces must be parallel within the following dimension. ... 0.03 mm (0.001 inch) (9) Angle of valve face Angle of the face of the inlet valve ... 20.25 0.10 degreesAngle of the face of the exhaust valve ... 20.25 0.10 degrees
Illustration 2 g00912082
Inlet and exhaust valves
(10) Depth of bore for valve seat insert ... 24.00 0.15 mm (0.945 0.006 inch) (11) Diameter of valve stems Diameter of inlet valve stem ... 15.980 0.007 mm (0.6291 0.0003 inch)Diameter of exhaust valve stem ... 15.977 0.01 mm (0.6290 0.0004 inch)Install the valve guide into the cylinder head. The bore in the valve guide is the following dimension. ... 16.031 0.028 mm (0.6311 0.0011 inch)Note: Coat the inlet valve stems and the exhaust valve stems with 8T-2998 Lubricant prior to the installation in the cylinder head. (12) Diameter of valve seat inserts Diameter of inlet valve seat insert ... 97.195 0.015 mm (3.8266 0.0006 inch)Diameter of exhaust valve seat insert ... 97.215 0.015 mm (3.8274 0.0006 inch)Bore in head for valve seat inserts ... 97.000 0.025 mm (3.8189 0.0010 inch) (13) Angle of face of valve seat inserts ... 20 1 degreesFull face contact is required between both the valve and the insert for the full 360 degrees. The minimum width of the seat is the following dimension. ... 3.0 mm (0.12 inch) (14) Maximum recess from the closed valve face to the surface of the cylinder head ...