Table of Contents
Advertisement
4
Systems Operation Section
Systems Operation Section
General Information
The six cylinders are arranged in-line. The cylinder
head assembly has one inlet valve and one exhaust
valve for each cylinder. The port for the exhaust valve
are on the right side of the cylinder head. The port for
the inlet valve are on the left side of the cylinder head.
Each cylinder valve has a single valve spring.
Each cylinder has a piston cooling jet that is installed
in the cylinder block. The piston cooling jet sprays
engine oil onto the inner surface of the piston in order
to cool the piston. The pistons have a combustion
chamber in the top of the piston in order to achieve
clean exhaust emissions. The piston pin is off-center
in order to reduce the noise level.
The pistons have two compression rings and an oil
control ring. The groove for the top ring has a hard
metal insert in order to reduce wear of the groove.
The skirt has a coating of graphite in order to reduce
wear when the engine is new. The correct piston
height is important in order to ensure that the piston
does not contact the cylinder head. The correct piston
height also ensures the efficient combustion of fuel
which is necessary in order to conform to
requirements for emissions.
A piston and a connecting rod are matched to each
cylinder. The piston height is controlled by the
distance between the center of the big end bearing
and the center of the small end bearing of the
connecting rod. Three different lengths of connecting
rods are available in order to attain the correct piston
height. The three different lengths of connecting rods
are made by machining the blank small end bearing
of each rod at three fixed distances vertically above
the centerline of the big end bearing.
The crankshaft has seven main bearing journals. End
play is controlled by thrust washers which are located
on both sides of the number 6 main bearing.
The timing case is made of aluminum. The timing
gears are stamped with timing marks in order to
ensure the correct assembly of the gears. When the
number 1 piston is at the top center position on the
compression stroke, the marked teeth on the idler
gear will match with the marks that are on the fuel
injection pump, the camshaft, and the gear on the
crankshaft. There is no timing mark on the rear face
of the timing case.
The crankshaft gear turns the idler gear which then
turns the following gears:
This document has been printed from SPI2. NOT FOR RESALE.
• the camshaft gear
• the accessory drive gear (if equipped)
i05779894
• the fuel injection pump gear
• the water pump gear
The camshaft and the fuel injection pump run at half
the rpm of the crankshaft. The cylinder bores are
machined into the cylinder block.
The fuel injection pump that is installed on the left
side of the engine is gear-driven from the timing case.
The fuel transfer pump is located on the right-hand
side of the cylinder block.
The following model views show typical 1106A-70T,
1106A-70TA, 1106C-70TA and 1106D-70TA Industrial
Engines. Due to individual applications, your engine
may appear different from the illustrations.
UENR0617
Hide quick links:
Advertisement
Table of Contents
