(4) Check block deck surfaces for flatness. Deck
surface must be within service limit of 0.1 mm (0.004
in.).
CYLINDER BORE
NOTE: The cylinder bores should be measured at
normal room temperature, 21°C (70°F).
The cylinder walls should be checked for out-of-
round and taper with Tool C119 or equivalent (Fig.
44) (Refer to 9 - ENGINE - SPECIFICATIONS). If
the cylinder walls are badly scuffed or scored, the
cylinder block should be replaced, and new pistons
and rings fitted.
Measure the cylinder bore at three levels in direc-
tions A and B (Fig. 44). Top measurement should be
10 mm (3/8 in.) down and bottom measurement
should be 10 mm (3/8 in.) up from bottom of bore.
(Refer to 9 - ENGINE - SPECIFICATIONS).
Fig. 42 ENGINE BLOCK AND CRANKSHAFT
1 - MAIN CAP BOLT—VERTICAL
2 - MAIN CAP
3 - MAIN BEARING—LOWER
4 - MAIN BEARING—UPPER
5 - MAIN CAP BOLT —HORIZONTAL
6 - CYLINDER BLOCK
7 - CRANKSHAFT
Fig. 43 Cylinder Bore Cross-Hatch Pattern
1 - CROSS-HATCH PATTERN
2 - 40°–60°
9 - 40 ENGINE 2.7L LH
ENGINE BLOCK (Continued)
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