Download Volvo 2003T Technical data

Overhaul
3. Use mandrel p/n 9995218 to press out the valve
guides. Oil the new valve guides externally and use
mandrel p/n 884559 to install them. Press down the
mandrel all the way down to the cylinder head. Ream
the valve guides if necessary.
The cylinder head
1. Remove the “collets” and valve springs using a valve
bow. Remove the valves. Remove the valve stem seals.
Place the valves in the proper sequence in a valve
stand.
Valve guides
2. Check the wear of the valve guides by placing a new
valve in the guide. Use an indicator gauge and measure the clearance. Replace the guides if necessary.
Wear limits:
Inlet valve, max. clearance ............. 0.15 mm (.0059 in)
Outlet valve, max. clearance .......... 0.15 mm (.0059 in)
4. Mill or ream the valve seats. The angle (C) should
be 45° (for 2003T, 30° for the inlet valve). The sealing
surface width (B) should be 1 ± 0.1 mm (0.039 ±
0.0039 in.) Grind the valves in a valve grinding machine. The angle (D), see Technical data. If the disc
thickness after grinding is less than 1.0 mm (0.039
in.) for 2001, 2002, 2003 or 0.8 mm (0.031 in.) for
2003T, the valves must be scrapped. Valves with
bent stems, or if the measurement (A) exceeds
2.5 mm (0.098 in.) must also be scrapped. Grind the
valve tip towards the rockers if necessary. Lap in the
valves using valve grinding paste and check the contact area with marking dye.
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