Complete workshop 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.

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

 REG00974 - Disassembly & Assembly (3304 Vehicular Engine for 920 & 930 Wheel Loaders)
    Accessory Drive Shaft (Compact Fuel System).pdf
    Air Cleaner Housing.pdf
    Air Compressor.pdf
    Alternator.pdf
    Balancer Shaft Bearings.pdf
    Balancer Shafts.pdf
    Batteries And Battery Box.pdf
    Camshaft Bearings.pdf
    Camshaft.pdf
    Connecting Rod Bearings.pdf
    Crankshaft Front Seal And Wear Sleeve.pdf
    Crankshaft Main Bearings.pdf
    Crankshaft.pdf
    Crankshaft Pulley.pdf
    Crankshaft Rear Seal And Wear Sleeve.pdf
    Cylinder Head.pdf
    Cylinder Liners.pdf
    Electric Starting Motor.pdf
    Engine Front Support.pdf
    Engine Oil Cooler.pdf
    Engine, Torque Converter, Transmission And Transfer Gears.pdf
    Exhaust Manifold.pdf
    Fan And Fan Drive.pdf
    Flywheel Housing.pdf
    Flywheel.pdf
    Fuel Check Valve And By-Pass Valve (Sleeve Metering Fuel System).pdf
    Fuel Filter Base.pdf
    Fuel Filter Base (Sleeve Metering Fuel System).pdf
    Fuel Injection Lines.pdf
    Fuel Injection Pump Housing And Governor (Compact Fuel System) 1.pdf
    Fuel Injection Pump Housing And Governor (Compact Fuel System) 2.pdf
    Fuel Injection Pump Housing And Governor (Sleeve Metering Fuel System) 1.pdf
    Fuel Injection Pump Housing And Governor (Sleeve Metering Fuel System) 2.pdf
    Fuel Injection Pump Housing (Compact Fuel System).pdf
    Fuel Injection Pump Housing (Sleeve Metering Fuel System).pdf
    Fuel Injection Pumps (Sleeve Metering Fuel System).pdf
    Fuel Injection Valves.pdf
    Fuel Priming Pump.pdf
    Fuel Tank.pdf
    Fuel Transfer Pump (Compact Fuel System).pdf
    Fuel Transfer Pump (Sleeve Metering Fuel System).pdf
    Glow Plugs.pdf
    Governor (Compact Fuel System).pdf
    Governor (Sleeve Metering Fuel System).pdf
    Oil Filter Base.pdf
    Oil Pan.pdf
    Oil Pan Plate.pdf
    Oil Pump.pdf
    Pistons.pdf
    Precombustion Chambers.pdf
    Radiator And Guard.pdf
    Rocker Shaft And Push Rods.pdf
    Rocker Shaft.pdf
    Timing Gear Cover.pdf
    Timing Gears And Plate.pdf
    Transmission Oil Cooler.pdf
    Valve Cover.pdf
    Valve Guides.pdf
    Valve Lifters.pdf
    Valve Seat Inserts.pdf
    Valves.pdf
    Water Directors.pdf
    Water Pump.pdf
    Water Temperature Regulator.pdf
 REG00974 - Disassembly & Assembly (3304 Vehicular Engine for 920 & 930 Wheel Loaders).pdf
 SENR2147 - Specifications (3306 Direct Injection Vehicular Engine with New Scroll Fuel).pdf
 SENR2149 - Disassembly & Assembly (3306 Vehicular Engine for 966D Wheel Loader)
    Air Cleaner Elements And Housing.pdf
    Air Compressor Governor.pdf
    Air Compressor.pdf
    Air Conditioner Compressor.pdf
    Alternator.pdf
    Camshaft Bearings.pdf
    Camshaft.pdf
    Connecting Rod Bearings.pdf
    Crankshaft Front Seal And Wear Sleeve.pdf
    Crankshaft Main Bearings.pdf
    Crankshaft.pdf
    Crankshaft Rear Seal And Wear Sleeve.pdf
    Cylinder Head.pdf
    Cylinder Liners.pdf
    Electric Starting Motor.pdf
    Engine Oil Cooler.pdf
    Engine.pdf
    Exhaust Manifold.pdf
    Fan Drive.pdf
    Fan.pdf
    Flywheel Housing.pdf
    Flywheel.pdf
    Fuel Injection Lines.pdf
    Fuel Injection Nozzles.pdf
    Fuel Injection Pump Housing And Governor.pdf
    Fuel Injection Pump Housing.pdf
    Fuel Injection Pumps.pdf
    Fuel Priming And Primary Filter Pump Group.pdf
    Fuel Shutoff Solenoid.pdf
    Fuel Transfer Pump.pdf
    Governor.pdf
    Hood.pdf
    Muffler.pdf
    Oil Filter Base.pdf
    Oil Pan.pdf
    Oil Pan Plate.pdf
    Oil Pump.pdf
    Pistons.pdf
    Radiator And Guard.pdf
    Radiator And Hydraulic Oil Cooler.pdf
    Rocker Shaft And Push Rods.pdf
    Rocker Shaft.pdf
    Spacer Plate.pdf
    Timing Gear Cover.pdf
    Timing Gears And Plate.pdf
    Torque Converter Oil Cooler.pdf
    Turbocharger.pdf
    Valve Cover.pdf
    Valve Guides.pdf
    Valve Lifters.pdf
    Valve Seat Inserts.pdf
    Valves.pdf
    Vibration Damper And Pulley.pdf
    Water Directors.pdf
    Water Pump.pdf
    Water Temperature Regulator.pdf
 SENR2149 - Disassembly & Assembly (3306 Vehicular Engine for 966D Wheel Loader).pdf
 SENR2252 - Specifications (3304 Direct Injection Vehicular Engine with New Scroll Fuel)
    Air Cleaner And Precleaner.pdf
    Alternators And Regulators.pdf
    Bearing Surface (Journal) For Connecting Rods.pdf
    Bearing Surface (Journal) For Main Bearings.pdf
    Belt Tension Chart.pdf
    Camshaft Bearings.pdf
    Camshaft.pdf
    Connecting Rod And Main Bearings.pdf
    Connecting Rod.pdf
    Cooling System Pressure Cap (6L8617), (321464).pdf
    Crankshaft Hub And Damper.pdf
    Crankshaft.pdf
    Crankshaft Pulley.pdf
    Cylinder Block.pdf
    Cylinder Head.pdf
    Cylinder Liner.pdf
    Cylinder Liner Projection.pdf
    Electric Starter Motors.pdf
    Engine Design.pdf
    Engine Oil Pressure.pdf
    Ether Starting Aid.pdf
    Exhaust Manifold.pdf
    Exhaust Pipe And Muffler.pdf
    Flywheel Housing Bore.pdf
    Flywheel Housing.pdf
    Flywheel Housing Runout.pdf
    Flywheel.pdf
    Flywheel Runout.pdf
    Fuel Filter Base.pdf
    Fuel Injection Lines.pdf
    Fuel Injection Nozzle.pdf
    Fuel Injection Pump Housing.pdf
    Fuel Injection Pump.pdf
    Fuel Priming Pump And Primary Fuel Filter.pdf
    Fuel Ratio Control.pdf
    Fuel Transfer Pump.pdf
    Governor Control.pdf
    Governor.pdf
    Introduction.pdf
    Oil Breather Cap.pdf
    Oil Filter.pdf
    Oil Pump.pdf
    Pistons And Rings.pdf
    Radiator.pdf
    Shutoff Solenoids.pdf
    Starter Magnetic Switches.pdf
    Starter Solenoids.pdf
    Timing Gear Cover.pdf
    Timing Gears.pdf
    Trunion.pdf
    Turbocharger Impeller Installation.pdf
    Turbocharger.pdf
    Valve Cover.pdf
    Valve Rocker Arms And Lifters.pdf
    Valves.pdf
    Water Pump.pdf
    Water Temperature Regulator.pdf
 SENR2252 - Specifications (3304 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
 SENR2254 - Disassembly & Assembly (3304 Vehicular Engine for 950B Wheel Loader)
    Air Cleaner Element Assembly.pdf
    Air Cleaner Group.pdf
    Air Compressor.pdf
    Air Conditioner Compressor.pdf
    Alternator.pdf
    Balancer Shaft Bearings.pdf
    Balancer Shafts.pdf
    Camshaft Bearings.pdf
    Camshaft.pdf
    Connecting Rod Bearings.pdf
    Crankshaft And Gear.pdf
    Crankshaft Front Seal And Wear Sleeve.pdf
    Crankshaft Main Bearings.pdf
    Crankshaft Pulley.pdf
    Crankshaft Rear Seal And Wear Sleeve.pdf
    Cylinder Head Assembly.pdf
    Cylinder Liners.pdf
    Electric Starting Motor.pdf
    Engine Front Support.pdf
    Engine Oil Cooler.pdf
    Engine.pdf
    Exhaust Manifold.pdf
    Fan Drive.pdf
    Fan.pdf
    Flywheel Housing.pdf
    Flywheel.pdf
    Fuel Filter Base.pdf
    Fuel Injection Lines.pdf
    Fuel Injection Nozzles.pdf
    Fuel Injection Pump Housing And Governor (Earlier).pdf
    Fuel Injection Pump Housing And Governor (Later).pdf
    Fuel Injection Pumps.pdf
    Fuel Priming Pump And Primary Filter Group.pdf
    Fuel Ratio Control.pdf
    Fuel Shutoff Solenoid.pdf
    Fuel Tank.pdf
    Fuel Transfer Pump (Earlier).pdf
    Fuel Transfer Pump (Later).pdf
    Governor.pdf
    Oil Filter Base.pdf
    Oil Pan.pdf
    Oil Pan Plate.pdf
    Oil Pump.pdf
    Piston Cooling Orifices.pdf
    Pistons And Connecting Rods.pdf
    Radiator And Guard (Later).pdf
    Radiator And Hydraulic Oil Cooler (Earlier).pdf
    Radiator And Hydraulic Oil Cooler Group (Later, In-Chasis).pdf
    Radiator, Oil Cooler And Guard (Earlier).pdf
    Rocker Shaft Assembly And Push Rods.pdf
    Spacer Plate.pdf
    Timing Gear Cover.pdf
    Timing Gears And Plate.pdf
    Transmission Oil Cooler.pdf
    Turbocharger.pdf
    Valve Cover.pdf
    Valve Guides.pdf
    Valve Lifters.pdf
    Valve Seat Inserts.pdf
    Valves.pdf
    Water Directors.pdf
    Water Pump.pdf
    Water Temperature Regulator.pdf
 SENR2254 - Disassembly & Assembly (3304 Vehicular Engine for 950B Wheel Loader).pdf
 SENR2428 - Specifications (3304 Vehicular Engine for 930R Wheel Loader)
    Air Cleaner.pdf
    Alternator 2Y4212 28V 17A (Robert Bosch Number 9 120 080 094).pdf
    Alternator Regulator 2Y5713 28V (Robert Bosch Number 9 190 087 005).pdf
    Bearing Surface (Journal) For Connecting Rods.pdf
    Bearing Surface (Journal) For Main Bearings.pdf
    Camshaft.pdf
    Connecting Rod.pdf
    Crankshaft Hub.pdf
    Crankshaft.pdf
    Cylinder Block.pdf
    Cylinder Head.pdf
    Cylinder Liner.pdf
    Cylinder Liner Projection.pdf
    Engine Design.pdf
    Engine Oil Pressure.pdf
    Exhaust Manifold.pdf
    Exhaust Pipe And Muffler.pdf
    Fan Drive.pdf
    Flywheel Housing Bore.pdf
    Flywheel Housing Runout.pdf
    Flywheel Housing Tightening.pdf
    Flywheel Ring Gear.pdf
    Flywheel Runout.pdf
    Fuel Injection Equipment.pdf
    Fuel Pressure Indicator 1W706 Indicator (Frank W. Murphy Mfr. Inc. Number 05-35-756).pdf
    Fuel System Timing.pdf
    Fuel Transfer Pump.pdf
    Glow Plug Positioning.pdf
    Governor Control.pdf
    Introduction.pdf
    Main Bearings And Connecting Rod Bearings.pdf
    Oil Breather Cap.pdf
    Oil Filter.pdf
    Oil Pressure Indicator 5M1065 Indicator (Stewart Warner Corp. Number 342-FR).pdf
    Oil Pump.pdf
    Pistons And Rings.pdf
    Radiator.pdf
    Starter Motors 3P7.pdf
    Starter Solenoids.pdf
    Timing Gear Cover.pdf
    Timing Gears.pdf
    Trunnion.pdf
    Valve Cover.pdf
    Valve Rocker Arms And Lifters.pdf
    Valves.pdf
    Water Pump.pdf
    Water Separator.pdf
    Water Temperature Indicator 1W697 Indicator (Frank W. Murphy Mfr. Inc. Number 10-35-856).pdf
    Water Temperature Regulator.pdf
 SENR2428 - Specifications (3304 Vehicular Engine for 930R Wheel Loader).pdf
 SENR2429 - Systems Operation (3304 Vehicular Engine for 930R Wheel Loader).pdf
 SENR2429 - Testing & Adjusting (3304 Vehicular Engine for 930R Wheel Loader).pdf
 SENR2430 - Disassembly & Assembly (3304 Vehicular Engine for 930R Wheel Loader)
    Air Cleaner Housing.pdf
    Air Compressor.pdf
    Alternator.pdf
    Balancer Shaft Bearings.pdf
    Balancer Shafts.pdf
    Batteries And Battery Box.pdf
    Camshaft Bearings.pdf
    Camshaft.pdf
    Connecting Rod Bearings.pdf
    Crankshaft Front Seal And Wear Sleeve.pdf
    Crankshaft Main Bearings.pdf
    Crankshaft.pdf
    Crankshaft Pulley.pdf
    Crankshaft Rear Seal And Wear Sleeve.pdf
    Cylinder Head.pdf
    Cylinder Liners.pdf
    Electric Starting Motor.pdf
    Engine Front Support.pdf
    Engine Oil Cooler.pdf
    Exhaust Manifold.pdf
    Fan And Fan Drive.pdf
    Flywheel Housing.pdf
    Flywheel.pdf
    Fuel Check Valve And By-Pass Valve.pdf
    Fuel Filter Base.pdf
    Fuel Injection Lines.pdf
    Fuel Injection Pump Housing And Governor.pdf
    Fuel Injection Pump Housing.pdf
    Fuel Injection Pumps.pdf
    Fuel Injection Valves.pdf
    Fuel Priming Pump.pdf
    Fuel Tank.pdf
    Fuel Transfer Pump.pdf
    Glow Plugs.pdf
    Governor.pdf
    Oil Filter Base.pdf
    Oil Pan.pdf
    Oil Pan Plate.pdf
    Oil Pump.pdf
    Piston Cooling Orifices.pdf
    Pistons.pdf
    Precombustion Chambers.pdf
    Radiator And Guard.pdf
    Rocker Shaft And Push Rods.pdf
    Rocker Shaft.pdf
    Timing Gear Cover.pdf
    Timing Gears And Plate.pdf
    Transmission Oil Cooler.pdf
    Valve Cover.pdf
    Valve Guides, Cylinder Liners.pdf
    Valve Lifters.pdf
    Valve Seat Inserts.pdf
    Valves.pdf
    Water Directors.pdf
    Water Pump.pdf
    Water Temperature Regulator.pdf
 SENR2430 - Disassembly & Assembly (3304 Vehicular Engine for 930R Wheel Loader).pdf
 SENR3074 - Disassembly & Assembly (3304 Vehicular Engine for 930T & 936 Wheel Loaders)
    Air Cleaner Housing.pdf
    Air Compressor.pdf
    Air Conditioner Compressor.pdf
    Alternator.pdf
    Balancer Shaft Bearings.pdf
    Balancer Shafts.pdf
    Camshaft Bearings.pdf
    Camshaft.pdf
    Compressor Clutch And Pulley.pdf
    Compressor Coil.pdf
    Compressor Shaft Seal.pdf
    Connecting Rod Bearings.pdf
    Crankshaft And Gear.pdf
    Crankshaft Front Seal And Wear Sleeve.pdf
    Crankshaft Main Bearings.pdf
    Crankshaft Pulley.pdf
    Crankshaft Rear Seal And Wear Sleeve.pdf
    Cylinder Head Assembly And Spacer Plate.pdf
    Cylinder Liners.pdf
    Electric Starting Motor.pdf
    Engine Front Support.pdf
    Engine Oil Cooler.pdf
    Engine.pdf
    Exhaust Manifold.pdf
    Fan Drive.pdf
    Fan Guard.pdf
    Fan.pdf
    Flywheel Housing.pdf
    Flywheel.pdf
    Front Support Trunnion.pdf
    Fuel Filter Base And Filter.pdf
    Fuel Injection Lines.pdf
    Fuel Injection Nozzles.pdf
    Fuel Injection Pump Housing And Governor.pdf
    Fuel Injection Pump Housing.pdf
    Fuel Injection Pumps.pdf
    Fuel Priming And Primary Filter Pump Group.pdf
    Fuel Tank.pdf
    Fuel Transfer Pump.pdf
    Governor.pdf
    Hood.pdf
    Muffler.pdf
    Oil Filter Base.pdf
    Oil Pan.pdf
    Oil Pan Plate.pdf
    Oil Pump.pdf
    Piston Cooling Orifices.pdf
    Pistons And Connecting Rods.pdf
    Radiator And Air Conditioning Cores (Folded Core).pdf
    Radiator And Guard.pdf
    Rocker Shaft Assembly And Push Rods.pdf
    Rocker Shaft Assembly.pdf
    Timing Gear Cover.pdf
    Timing Gear Plate.pdf
    Timing Gears.pdf
    Transmission Oil Cooler.pdf
    Turbocharger.pdf
    Valve Cover.pdf
    Valve Guides.pdf
    Valve Lifters.pdf
    Valve Seat Inserts.pdf
    Valves.pdf
    Water Directors.pdf
    Water Pump 1.pdf
    Water Pump 2.pdf
    Water Temperature Regulator.pdf
 SENR3074 - Disassembly & Assembly (3304 Vehicular Engine for 930T & 936 Wheel Loaders).pdf
 SENR5559 - Disassembly & Assembly (3304 & 3306 Diesel Engines)
    Aftercooler.pdf
    Air Compressor.pdf
    Balancer Shaft Bearings (3304).pdf
    Balancer Shafts (3304).pdf
    Camshaft Bearings.pdf
    Camshaft.pdf
    Connecting Rod Bearings.pdf
    Crankshaft Front Seal & Wear Sleeve.pdf
    Crankshaft Main Bearings.pdf
    Crankshaft.pdf
    Crankshaft Pulley (3304).pdf
    Crankshaft Rear Seal & Wear Sleeve.pdf
    Crankshaft Vibration Damper (3306).pdf
    Crankshaft Vibration Damper & Pulley (3306).pdf
    Cylinder Head Assembly & Spacer Plate.pdf
    Cylinder Liners.pdf
    Dipstick Assembly.pdf
    Disassemble & Assemble.pdf
    Engine Oil Cooler.pdf
    Exhaust Manifold (3304).pdf
    Exhaust Manifold (3306).pdf
    Flywheel 1.pdf
    Flywheel 2.pdf
    Flywheel Housing.pdf
    Front Support (3306).pdf
    Front Support.pdf
    Fuel Filter & Base.pdf
    Fuel Injection Lines.pdf
    Fuel Injection Nozzles.pdf
    Fuel Injection Pump Housing & Governor.pdf
    Fuel Injection Pump Housing.pdf
    Fuel Injection Pumps.pdf
    Fuel Priming Pump.pdf
    Fuel Transfer Pump.pdf
    Governor.pdf
    Install Crankshaft Rear Seal & Wear.pdf
    Oil Filter Base.pdf
    Oil Filter & Oil Filter Base.pdf
    Oil Pan.pdf
    Oil Pan Plate.pdf
    Oil Pump (3304).pdf
    Oil Pump (3306).pdf
    Piston Cooling Orifices.pdf
    Pistons & Connecting Rods.pdf
    Primary Fuel Filter & Base.pdf
    Rocker Shaft Assembly.pdf
    Rocker Shaft Assembly & Push Rods.pdf
    Secondary Fuel Filter & Base.pdf
    Timing Gear Cover.pdf
    Timing Gear Plate.pdf
    Timing Gears.pdf
    Turbocharger.pdf
    Valve Cover (3304).pdf
    Valve Cover (3306).pdf
    Valve Guides.pdf
    Valve Lifters.pdf
    Valve Seat Inserts.pdf
    Valves.pdf
    Water Directors.pdf
    Water Pump.pdf
    Water Temperature Regulator.pdf
 SENR5559 - Disassembly & Assembly (3304 & 3306 Diesel Engines).pdf
 SENR7590 - Specifications (3304 Vehicular Engine)
    Air Cleaner.pdf
    Alternator Regulator.pdf
    Alternators.pdf
    Bearing Surface (Journal) For Connecting Rods.pdf
    Bearing Surface (Journal) For Main Bearings.pdf
    Camshaft.pdf
    Checking And Adjusting Alignment Of The Flexible Coupling Drive.pdf
    Connecting Rod.pdf
    Converter Oil Temperature Indicator.pdf
    Coolant Flow Switch.pdf
    Crankshaft Hub.pdf
    Crankshaft.pdf
    Cylinder Block.pdf
    Cylinder Head.pdf
    Cylinder Liner.pdf
    Cylinder Liner Projection.pdf
    Electric Service Meter (Later Models).pdf
    Engine Design.pdf
    Engine Mounting Bolts.pdf
    Engine Oil Pressure.pdf
    Exhaust Manifold.pdf
    Exhaust Pipe And Muffler.pdf
    Fan Drive.pdf
    Flexible Coupling Drive.pdf
    Flywheel Housing Bore.pdf
    Flywheel Housing.pdf
    Flywheel Housing Tightening.pdf
    Flywheel.pdf
    Flywheel Ring Gear.pdf
    Fuel Bypass Valve (Scroll Fuel System - PC).pdf
    Fuel Injection Equipment (Scroll Fuel System - PC).pdf
    Fuel Injection Equipment (Sleeve Metering Fuel System - DI).pdf
    Fuel Injection Equipment (Sleeve Metering Fuel System - PC).pdf
    Fuel Injection Pump Housing (Scroll Fuel System - DI).pdf
    Fuel Injection (Scroll Fuel System - DI).pdf
    Fuel Pressure Indicator.pdf
    Fuel Ratio Control (Sleeve Metering Fuel System - DI).pdf
    Fuel Ratio Control (Sleeve Metering System - PC).pdf
    Fuel System Timing.pdf
    Fuel System Usage Chart.pdf
    Fuel Transfer Pump (4N4864) (Scroll Fuel System - DI).pdf
    Fuel Transfer Pump (Scroll Fuel System - PC).pdf
    Fuel Transfer Pump (Sleeve Metering Fuel System - DI).pdf
    Fuel Transfer Pump (Sleeve Metering Fuel System - PC).pdf
    Generator Regulators.pdf
    Generators.pdf
    Glow Plug Positioning.pdf
    Governor Control (Sleeve Metering Fuel System - DI).pdf
    Governor Control (Sleeve Metering Fuel System - PC).pdf
    Governor Housing (Scroll Fuel System - DI).pdf
    Governor (Scroll Fuel System - DI).pdf
    Governor (Scroll Fuel System - PC).pdf
    Injection Nozzle (7N449) (Scroll Fuel System - DI).pdf
    Injection Nozzle (7N449) (Sleeve Metering Fuel System - DI).pdf
    Introduction.pdf
    Main Bearings And Connecting Rod Bearings.pdf
    Oil Breather Cap.pdf
    Oil Filter.pdf
    Oil Pressure Indicator.pdf
    Oil Pressure Switch.pdf
    Oil Pump.pdf
    Pistons And Rings.pdf
    Radiator.pdf
    Service Meter (Earlier Models).pdf
    Starter Magnetic Switches.pdf
    Starter Motors.pdf
    Starter Solenoids.pdf
    Tachometer Drive.pdf
    Timing Gears (Scroll Fuel System - PC & DI).pdf
    Timing Gears (Sleeve Metering Fuel System - PC & DI).pdf
    Turbocharger Impeller Installation.pdf
    Turbocharger.pdf
    Valve Cover.pdf
    Valve Rocker Arms and Lifters.pdf
    Valves (DI).pdf
    Valves (PC).pdf
    V-Belt Tension Chart.pdf
    Water Pump.pdf
    Water Separator (Sleeve Metering Fuel System - PC & DI).pdf
    Water Temperature Indicator.pdf
    Water Temperature Regulator.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
 UEG0797S - Parts Book (3304 Vehicular Engine).pdf

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.

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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"

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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.

Caterpillar 3304, 3306 Engine Workshop Repair & Service Manual