Disassembly and Assembly
8. Use tooling (C) and remove crankshaft gear (1) from
NOTICE If the bearings are to be removed, put
identification marks on them as to their location for
9. If necessary, remove the main bearings from the
cylinder block and main bearing caps.
If necessary, remove the connecting rod bearings from
the connecting rods and connecting rod caps.
Install Crankshaft 1202-012
OTC Model 1750A Engine Repair
Dial Indicator Test Group
1. Put the engine in position on tooling (A).
If the crankshaft journals and bores for the block and
rods were measured at disassembly and found to be
within specifications, no further checks are necessary.
However, if the serviceman still wants to measure the
bearing clearances, Plastigauge is recommended. Lead
wire, shim stock or use of a dial bore gauge can damage
the bearing surface.
The serviceman must be very careful to use Plastigauge
correctly. The following points must be remembered:
a. Make sure that the backs of the bearings
and the bores are clean and dry.
b. Make sure that the bearing locking tabs
are properly seated in their slots.
c. The crankshaft must be free of oil where
the Plastigauge touches it.