RM3090E _51 Engine / Hybrid System _008396 2AR-FE ENGINE MECHANICAL _0046873 CYLINDER HEAD A

2AR-FE ENGINE MECHANICAL  CYLINDER HEAD  REPAIR  


PROCEDURE

Hide 11131 1.REPAIR INTAKE VALVE SEAT

NOTICE:
·

Repair the seat while checking the seating position.

·

Keep the lip free of foreign matter.

·

Take off the cutter gradually to make the intake valve seat smooth.



a.
A194983

Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification.


b.
A285334
2.719,1.656 3.031,1.813 0.313,0.156 10 *1 2.594,0.094 2.865,0.292 0.271,0.198 10 60° 2.896,0.281 3.167,0.479 0.271,0.198 10 45° 3.135,0.521 3.406,0.719 0.271,0.198 10 30°
*1
60°
45°
30°
*1 Width


Using 30° and 60° cutters, correct the valve seat so that the valve contacts the entire circumference of the seat. The contact should be in the center of the valve seat, and the valve seat width should be maintained within the specified range around the entire circumference of the seat.

Standard width:

1.0 to 1.4 mm (0.0394 to 0.0551 in.)



c.

Hand-lap the valve and valve seat with an abrasive compound.


d.

Check the valve seating position.


Hide 11135 2.REPAIR EXHAUST VALVE SEAT

NOTICE:
·

Repair the seat while checking the seating position.

·

Keep the lip free of foreign matter.

·

Take off the cutter gradually to make the exhaust valve seat smooth.



a.
A194982

Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification.


b.
A124255
2.542,0 2.781,0.156 0.24,0.156 10 75° 2.948,0.104 3.188,0.26 0.24,0.156 10 45° 3.135,0.385 3.375,0.542 0.24,0.156 10 30° 2.833,1.729 3.083,1.917 0.25,0.188 10 *1
75°
45°
30°
*1
*1 Width


Using 30° and 75° cutters, correct the valve seat so that the valve contacts the entire circumference of the seat. The contact should be in the center of the valve seat, and the valve seat width should be maintained within the specified range around the entire circumference of the seat.

Standard width:

1.2 to 1.6 mm (0.0472 to 0.0630 in.)



c.

Hand-lap the valve and valve seat with an abrasive compound.


d.

Check the valve seating position.