Engine Description - Perkins 402D-05 Operation And Maintenance Manual

16
Product Information Section
Model Views
Illustration 12
Front and left side view of the 404D-22T Engine
(13) Top engine oil filler cap
(14) Crankcase breather
(15) Rear Lifting eye
(16) Air inlet elbow
(17) Valve mechanism cover
(18) Turbocharger

Engine Description

The 400 series engines are indirect injection engines.
The engines are controlled with a mechanically
actuated fuel injection pump. The engine cylinders
are arranged in-line.
The cylinder head assembly has one inlet valve and
one exhaust valve for each cylinder. Each cylinder
valve has a single valve spring.
This document is printed from SPI². Not for RESALE
(19) Water temperature regulator housing
(20) Starting motor solenoid
(21) Electric starting motor
(22) Alternator
(23) Engine oil pan
(24) Engine oil drain plug
The pistons have two compression rings and an
i02959055
oil control ring. It is important to ensure the correct
piston height so that the piston does not contact the
cylinder head. The correct piston height also ensures
efficient combustion of fuel that is necessary in order
to conform to requirements for emissions.
The crankshaft for a two cylinder engine has two
main bearing journals. The crankshaft for a three
cylinder engine has four main bearing journals. The
crankshaft for a four cylinder engine has five main
bearing journals. End play is controlled by the thrust
washers that are located on the rear main bearing.
SEBU8311-02
(25) Fan drive belt
(26) Crankshaft pulley
(27) Coolant temperature switch
(28) Cooling fan
g01305224