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Complete digital official shop manual contains service, maintenance, and troubleshooting information for the Caterpillar 3304, 3306 Engine. Diagnostic and repair procedures are covered in great detail to repair, maintain, rebuild, refurbish or restore your Engine like a professional mechanic in local service/repair workshop. This cost-effective quality manual is 100% complete and intact as should be without any missing pages. It is the same factory shop manual used by dealers that guaranteed to be fully functional to save your precious time.
This manual for Caterpillar 3304, 3306 Engine is divided into different sections. Each section covers a specific component or system and, in addition to the standard service procedures, includes disassembling, inspecting, and assembling instructions. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. It is in the cross-platform PDF document format so that it works like a charm on all kinds of devices. You do not need to be skilled with a computer to use the manual.
FILELIST:
UEG0797S – Parts Book (3304 Vehicular Engine).pdf
REG00974 – Disassembly & Assembly (3304 Vehicular Engine for 920 & 930 Wheel Loaders)
SENR2149 – Disassembly & Assembly (3306 Vehicular Engine for 966D Wheel Loader)
SENR2252 – Specifications (3304 Direct Injection Vehicular Engine with New Scroll Fuel)
SENR2254 – Disassembly & Assembly (3304 Vehicular Engine for 950B Wheel Loader)
SENR2428 – Specifications (3304 Vehicular Engine for 930R Wheel Loader)
SENR2430 – Disassembly & Assembly (3304 Vehicular Engine for 930R Wheel Loader)
SENR3074 – Disassembly & Assembly (3304 Vehicular Engine for 930T & 936 Wheel Loaders)
SENR5559 – Disassembly & Assembly (3304 & 3306 Diesel Engines)
SENR7590 – Specifications (3304 Vehicular Engine)
SENR2147 – Specifications (3306 Direct Injection Vehicular Engine with New Scroll Fuel).pdf
SENR2253 – Systems Operation (3304 Direct Injection Vehicular Engine with New Scroll Fuel).pdf
SENR2253 – Testing & Adjusting (3304 Direct Injection Vehicular Engine with New Scroll Fuel).pdf
SENR2429 – Systems Operation (3304 Vehicular Engine for 930R Wheel Loader).pdf
SENR2429 – Testing & Adjusting (3304 Vehicular Engine for 930R Wheel Loader).pdf
SENR7590 – Specifications (3304 Vehicular Engine).pdf
SENR7591 – Systems Operation (3304 Vehicular Engine).pdf
SENR7591 – Systems Operation + Testing & Adjusting (3304 Vehicular Engine).pdf
SENR7591 – Testing & Adjusting (3304 Vehicular Engine).pdf
…
ENGINE – GENERATOR SET
Model Prefix
3304 GEN SET ENGINE 3TC
3304 GEN SET ENGINE 4PC
3304 GEN SET ENGINE 6YB
3304 GEN SET ENGINE 83Z
3304B GEN SET ENGINE 1YF
3304B GEN SET ENGINE 2KK
3304B GEN SET ENGINE 3TC
3304B GEN SET ENGINE 83Z
3304B GEN SET ENGINE 9HK
3304B GENERATOR SET DED
ENGINE – INDUSTRIAL
Model Prefix
3304 INDUSTRIAL ENGINE 02B
3304 INDUSTRIAL ENGINE 04B
3304 INDUSTRIAL ENGINE 10E
3304B INDUSTRIAL ENGINE 4XB
ENGINE – MACHINE
Model Prefix
3304 ENGINE – MACHINE 07Z
3304 ENGINE – MACHINE 09Z
3304 ENGINE – MACHINE 10E
3304 ENGINE – MACHINE 12Z
3304 ENGINE – MACHINE 43V
3304 ENGINE – MACHINE 46V
3304 ENGINE – MACHINE 48V
3304 ENGINE – MACHINE 4TJ
3304 ENGINE – MACHINE 4XB
3304 ENGINE – MACHINE 4YD
3304 ENGINE – MACHINE 59Z
3304 ENGINE – MACHINE 78P
3304 ENGINE – MACHINE 9CB
3304 ENGINE – MACHINE 9CG
3304 ENGINE – MACHINE H4G
MARINE PRODUCTS
Model Prefix
3304 MARINE ENGINE 05B
3304 MARINE ENGINE 13E
3304B MARINE ENGINE 13E
3304B MARINE ENGINE 1NS
3304B MARINE ENGINE 1PS
3304B MARINE ENGINE 8XL
EXCERPT:
Systems Operation
N3 Series Brushless Alternators Media Number -SENR2082-01 Publication Date -01/03/2002 Date Updated -12/03/2002
Normal Operation
SMCS – 1405
The field winding uses DC voltage to create a magnetic field. The magnetic field is used to magnetize the rotor. The stator is a stationary component that surrounds the rotor. When the rotor rotates voltage is produced. The stator will then send the voltage to the rectifier. The rectifier changes the AC voltage into DC voltage. Part of the DC voltage returns to the field winding in order to maintain the magnetic field. The remainder of the DC voltage is supplied to the battery. Electrical components on the machine will then receive the voltage from the battery. The regulator limits the DC voltage at the battery terminals to 28 ± 1 volts by controlling the current in the field winding.
Alternator Operation Schematics
View Image
Illustration 1 g00866883
Electrical schematic of the N3 series alternator (35 amperes)
B- – Frame to battery ground
B+ – Alternator to battery positive terminal
D+ – Output for the excitation circuit and regulator input
D- – Ground for the alternator and regulator
DF – Alternator output and regulator input
G – Field winding
R – Auxiliary terminal
U – Stator winding
V – Stator winding
W – Stator winding
View Image
Illustration 2 g00866887
Electrical schematic of the N3 series alternator (50 amperes)
(1) Diodes for protection against load dump
B- – Frame to battery ground
B+ – Alternator to battery positive terminal
D+ – Output for the excitation circuit and regulator input
D- – Ground for the alternator and regulator
DF – Alternator output and regulator input
G – Field winding
R – Auxiliary terminal
U – Stator winding
V – Stator winding
W – Stator winding
Note: The “R” terminal may be used by one of the following components:
Charge indicator
Tachometer
Hour meter
Electronic control module
Illustrations 1 and 2 show the electrical schematics for the N3 series alternators.
The alternator has two circuits: the charging circuit and the excitation circuit. The charging circuit functions during normal operation. The excitation circuit functions during normal operation and during start-up. An independent circuit exists for each phase of the stator. Phases are noted as “U”, “V”, and “W”. The 50 amp alternator has two extra diodes. Diodes are connected to the neutral point of the stator. Diodes also add extra current to the output. However, the 35 ampere alternator lacks the extra diodes.
The descriptions that follow show the N3 series alternator (35 ampere).
Charging Circuit
The charging circuit supplies current to the battery and to the electrical systems during normal operation. Stator windings in the alternator generate three-phase AC voltage. Positive diodes and the negative diodes change the AC voltage into DC voltage. DC voltage allows the current to flow to the battery terminals.
View Image
Illustration 3 g00825118
Charging circuit with phase angle of 120°
The flow of current at a 120° phase angle is shown in Illustration 3. The polarity for the stator winding is described below:
Positive at the output of winding “U”
Zero at the output of winding “V”
Negative at the output of winding “W”
View Image
Illustration 4 g00825120
Charging circuit with phase angle of 150°
The flow of current at a 150° phase angle is shown in Illustration 4. The polarity for the stator winding is described below:
Positive at the output of winding “U”
Positive at the output of winding “V”
Negative at the output of winding “W”
Excitation Circuit (Normal)
The N3 series alternator is self-excited. The excitation circuit supplies current to the field winding (exciter) during normal operation. The rotor contains an iron core that acts as a rotating magnet. The rotating magnetic field induces voltages in the stator windings. Stator windings generate three-phase AC voltage. Exciter diodes and negative diodes change the AC voltage into DC voltage. DC voltage allows current to flow in the field winding. The current induces a stationary magnetic field in the field winding that will keep the rotor core magnetized. This process continues as the rotor operates normally.