Specifications, Mechanical: Valves

Fig 1: Identifying Cylinder Head Valve Dimensions

GLL102648

Courtesy of VOLVO CARS OF NORTH AMERICA.

Valve crown diameter (A)

Inlet	B6284T........31.00 0.15 mm
	B6294S........32.00 0.15 mm
Exhaust	B6284T........27.00 0.15 mm
	B6294S........27.00 0.15 mm

Valve stem diameter (B)

Inlet	B6284T........6.970 +0/-0.015 mm
	B6294S........6.963 0.007 mm

Valve stem diameter (B1)

Exhaust	B6284T (H1=22.7 mm)........6.962 0.007 mm
	B6294S (H1=17.4 mm)........6.963 0.007 mm

Valve stem diameter (B2)

Exhaust	B6284T (H2=65.1 mm)........6.954 0.007 mm
	B6294S (H2=70.4 mm)........6.953 0.007 mm

Total valve length (C)

Inlet	B6284T........104.25 0.22 mm
	B6294S........104.25 0.22 mm
Exhaust	B6284T........103.30 0.27 mm
	B6294S........130.30 0.22 mm

Disc edge height (D)

Inlet and exhaust........1.5 mm

Minimum height after grinding........1.2 mm

Mating surface angle (E)

Inlet........44.5°

Exhaust........44.5°

Fig 2: Camshaft Adjustment Tool

GLL108970

Courtesy of VOLVO CARS OF NORTH AMERICA.

Valve stem vertical position

Valve stem height........48.5 0.4 mm

Maximum machining of the valve stem........0.4 mm