01:01-02
©
Scania CV AB 1997 55
Program 96
Crankshaft
Removing
1. Remove the cylidner heads and pushrods.
2. Remove the flywheel and flywheel housing.
3. Remove the fan, fan bearing, oil sump, tim-
ing gear housing and intermediate gear.
4. Remove the oil pump and all pistons and con-
necting rods.
5. Remove all main bearing caps and carefully
lift out the crankshaft using a lifting strap or
the like which will not damage the shaft jour-
nals.
6. Remove all main bearing halves and thrust
washers on the 7th main bearing.
Checking and grinding
1. Measure the crankshaft pivot pins. Use a
micrometer to take measurements at two
points 90 degrees apart.
If either of these diameters is below the spec-
ified lower limit, regrinding of the crankshaft
or the fitting of a replacement crankshaft
should be considered.
The oil pressure should also be taken into
account, which is in turn also affected by
wear in the main and big-end bearings.
2. When regrinding, stated undersizes must be
complied with. There are bearings adapted to
these dimensions.
It is important that the fillet radius of the
pivot pins is correct.
After grinding the pivot pins, the oil hole ori-
fices at the bearing surfaces should be
rounded and polished.
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