Cylinder Block, Face-Grinding - Volvo Penta TAD1630G Workshop Manual

Service procedures - engine
4
Fit the milling tool and yoke. The tool is bolted to the cylinder
block. Place suitable flat washers under the bolt heads.
Make sure that the feed bolt does not exert pressure on the
tool.
5
Screw down the feed sleeve until it presses lightly against
the milling tool. Use a T-handle with a 3/4" connection and a
25 mm socket to turn the milling tool. The milling tool should
be turned with steady movements while turning the feed
sleeve at the same time. Stop the feed and turn the mill a few
turns. Check the contact surface of the liner seat and the
height of the sealing face at regular intervals.
6
Engines with liners that cannot be turned:
When correct height has been achieved, stop the feeding
and turn the milling tool some turns. Remove the milling tool
and clean the liner shelf.
7
Engines with liners that can be turned:
When 0.02 mm (0.0008") remains to the correct height, stop
the feeding motion and turn the milling tool several times.
Smear the bottom face of the liner collar with grinding paste.
Fit the liner and rotate it back and forth until the paste is worn
out. Remove the liner and carefully whip off the paste. Re-
peat this until there is good contact. Check the contact pat-
tern with marking paint by rotating the liner back and forth
and mark the liner so that it is fitted in the same position as
when checking for contact. Clean all parts thoroughly.
42

Cylinder block, face-grinding

The cylinder block must not be ground below the minimum,
specified measurements.
A = Height, upper block face - crankshaft center.
Min. 479.8 mm (18.9041")
B = Height, lower block face - crankshaft center.
Min. 119.9 mm (4.7241")
Note: After grinding the upper block face, the piston height
must be measured. See, "Cylinder liner with piston, fitting".
Group 21