Isuzu 3LA, Руководство пользователя

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II. Engine Component Description
U
L-Series Diesel 12
Cylinder Block
The engine’s serial number is stamped on the
front of the engine block. This number is used
by parts technical personnel to track an
engine's application or verify a specification.
Also shown are the castings in the block for
the individual injection pumps.
The 3L cylinder block features four main
bearing supports. The 4L block contains 5
main bearings. The caps are identified as
detailed below:
4L 3L
#1 “F” #1 “F”
#2 * #2 *
#3 “C” #3 “C”
#4 “R”
#4 “C” and a “
s
”
#5 “R”
*
has oil pump pick-up tube hole
The engine block uses cast-in-place rather than
removable liners. The block is a semi-dry deck
configuration incorporating overhead oiling
for the rockers. The cylinders and the deck
surface are cast together giving the block extra
support around the tops of the cylinders.
Coolant circulates around the periphery of the
cylinder bore area. This helps reduce piston
ring temperatures by eliminating cylinder hot
spots that are inherent with siamese cylinder
bores.