Perkins 1103 Series Workshop Manual page 6

General Informati General Information
Engine Description Engine Description
Note: Note: When you are ordering new parts, refer When you are ordering new parts, refer
to the engine identification number in order to to the engine identification number in order to
receive the correct parts. Refer to the Operation receive the correct parts. Refer to the Operation
and Maintenance Manual, and Maintenance Manual,
Information Information " " for the correct numbers for your engine. for the correct numbers for your engine.
The engine cylinders are arranged in-line. The The engine cylinders are arranged in-line. The
engines are controlled by a mechanically governed engines are controlled by a mechanically governed
fuel injection pump. fuel injection pump.
The cylinder head assembly has one inlet valve The cylinder head assembly has one inlet valve
and one exhaust valve for each cylinder. Each and one exhaust valve for each cylinder. Each
valve has one valve spring. The pistons have two valve has one valve spring. The pistons have two
compression rings and an oil control ring. compression rings and an oil control ring.
It is important to ensure the correct piston height so It is important to ensure the correct piston height so
that the piston does not contact the cylinder head. that the piston does not contact the cylinder head.
The correct piston height also ensures the efficient The correct piston height also ensures the efficient
combustion of fuel. combustion of fuel.
The 1104 engine crankshaft has five main journals. The 1104 engine crankshaft has five main journals.
End play is controlled by thrust washers that are End play is controlled by thrust washers that are
located on both sides of the center main bearing. located on both sides of the center main bearing.
The 1103 engine crankshaft has four main journals. The 1103 engine crankshaft has four main journals.
End play is controlled by thrust washers that are End play is controlled by thrust washers that are
located on both sides of the number three main located on both sides of the number three main
bearing. bearing.
The timing case has a hole that corresponds with The timing case has a hole that corresponds with
a hole in the crankshaft. Use an alignment pin to a hole in the crankshaft. Use an alignment pin to
find TC. The camshaft gear has a timing hole that find TC. The camshaft gear has a timing hole that
corresponds with a timing hole in the timing case. corresponds with a timing hole in the timing case.
The timing holes ensure that the camshaft and the The timing holes ensure that the camshaft and the
crankshaft are in time with each other. crankshaft are in time with each other.
The crankshaft gear rotates the idler gear. The idler The crankshaft gear rotates the idler gear. The idler
gear rotates the camshaft gear and the fuel injection gear rotates the camshaft gear and the fuel injection
pump gear. The idler gear for the engine oil pump pump gear. The idler gear for the engine oil pump
is rotated by the crankshaft gear. This idler rotates is rotated by the crankshaft gear. This idler rotates
the engine oil pump. the engine oil pump.
The fuel injection pump is a gear-driven pump that The fuel injection pump is a gear-driven pump that
is mounted to the back of the front housing. The is mounted to the back of the front housing. The
fuel transfer pump is electrically operated. The fuel fuel transfer pump is electrically operated. The fuel
transfer pump has an integral fuel filter. The fuel transfer pump has an integral fuel filter. The fuel
transfer pump is usually located on the left hand transfer pump is usually located on the left hand
side of the cylinder block. Some applications may side of the cylinder block. Some applications may
have the fuel transfer pump and the water separator have the fuel transfer pump and the water separator
(if equipped) relocated off the engine. (if equipped) relocated off the engine.
The oil pump is driven by an idler gear. The engine The oil pump is driven by an idler gear. The engine
oil pump sends lubricating oil to the main oil gallery. oil pump sends lubricating oil to the main oil gallery.
The oil relief valve is internal to the oil pump. The oil relief valve is internal to the oil pump.
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Coolant from the bottom of the radiator passes Coolant from the bottom of the radiator passes
through the water pump. The water pump is driven through the water pump. The water pump is driven
by the idler gear. by the idler gear.
Lifting the Engine Lifting the Engine
NOTICE NOTICE
Failure to follow recommended procedures for han- Failure to follow recommended procedures for han-
dling or transporting engines can lead to engine dam- dling or transporting engines can lead to engine dam-
age. age.
To avoid possible engine damage, use the following To avoid possible engine damage, use the following
procedure. procedure.
When you are lifting or moving the engine, use the When you are lifting or moving the engine, use the
following procedures in order to prevent engine following procedures in order to prevent engine
damage. damage.
1. 1. Do not tilt the engine to an extreme angle unless Do not tilt the engine to an extreme angle unless
the lubricating oil is first drained from the oil pan. the lubricating oil is first drained from the oil pan.
2. 2. Do not turn the engine onto a side or an end Do not turn the engine onto a side or an end
surface unless the lubricating oil is first drained surface unless the lubricating oil is first drained
from the oil pan. from the oil pan.
3. 3. If the oil is not drained prior to tilting the engine If the oil is not drained prior to tilting the engine
or turning the engine onto a side or an end or turning the engine onto a side or an end
surface, the lubricating oil from the oil pan can surface, the lubricating oil from the oil pan can
flow into the intake manifold and the cylinder flow into the intake manifold and the cylinder
bores. This situation could cause a hydraulic bores. This situation could cause a hydraulic
lock in the engine. Hydraulic lock can severely lock in the engine. Hydraulic lock can severely
damage the engine. damage the engine.
4. 4. The engine oil should be refilled to the correct The engine oil should be refilled to the correct
level before the engine is started. level before the engine is started.
Systems Operation Section Systems Operation Section
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