Liners can also be removed by running a wide, sloppy welding bead up one side, with very little penetration (bubblegum welds are perfect). This causes the liner to shrink and they can be tapped out easily with a driver (you will need to make one). Many shops do just this, it's faster.
Sometimes you can also shrink them out with dry ice, but that is tricky.
To install, pack in dry ice for 20 min, then drop in. Make sure bores are CLEAN first, and make absolutely sure to push them completely down, or you will have to remove them (destroying them) and try again.
We take them out ourselves and have the shop install the new ones -- they have more practice and charge $30 each to remove the old ones.
Pistons should be perfect to be reused -- no deformation of ring lands, no cracks, no scratches from cleaning at the base of the ring grooves, and must have factory clearance (between ring and groove) with a new ring all round the piston. Also, no visible wear on skirts and correct diameter at the base. A pain to check, but the ones for my 300DT are $400 each!
Peter
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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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