Cat 3508 Diesel Engine Service Manual

Page 144

FUEL SYSTEM 2.

TESTING AND ADJUSTING

Move the governor or actuator terminal shaft in the fuel "ON" direction until the flat face of fuel stop lever (6) contacts synchronizing pin (5). Hold the linkage in this position.

NOTE: See FUEL SETTING AND INFORMATION for the correct fuel setting.

RELATED

5.

If fuel setting is correct, remove the dial indicator and synchronizing pin (5). Install the two plugs, and install pin (5) back into cover (8).

6.

If fuel setting needs adjustment, go on to Fuel Setting Adjustment.

Fuel Setting Adjustment

NOTICE A mechanic with governor and fuel setting training is the ONLY one to make adjustments to the engine fuel setting.

DIAL INDICATOR IN POSITION (Cover Removed Only for Photo Illustration) 2. 6V3075 Dial Indicator. 4. 5P7263 Contact Point, 76.2 mm (3.00 in.) long. 5. Synchronizing pin. 6. Fuel stop lever. 3.

1.

Install the dial indicator and collet (3) in the threaded hole as shown. When the contact point seats against fuel stop lever (6), slide the dial indicator in or out until the indicator reads zero. Now tighten collet (3) just enough to hold indicator at this position.

Cut the seal wire and remove fuel setting cover (8) and the gasket. Loosen locknut (7) and (with fuel stop lever still held against end of the fuel setting screw) turn the fuel setting screw in or out until the correct reading is on the dial indicator.

ADJUSTMENT OF THE FUEL SETTING SCREW CHECKING FUEL SETTING 2. 6V3075 Dial Indicator (metric). 5. Synchronizing pin. 8. Fuel setting cover. 4.

Turn synchronizing pin (5) back out a minimum of 25 mm (1 in.) (or remove it completely), and then slowly move the governor or actuator terminal shaft in the fuel "ON" direction until the flat face of the fuel stop lever is against the end of the fuel setting screw. With the linkage held in this position, the dial indicator reading will be the present fuel setting.

126

2.

Now tighten locknut (7). Be sure that the fuel setting screw does not turn when the locknut (7) is tightened. Release the fuel linkage and again move linkage all the way in the fuel "ON" direction. Check the dial indicator reading again to be sure that fuel setting is still correct.

3.

Remove the dial indicator and synchronizing pin (5), then install the two plugs. (5), then install the two plugs.


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Articles inside

Pistons

3min
pages 396-397

Spacer Plates

2min
pages 391-392

Front Balancer Group

1min
pages 385-386

Crankshaft Main Bearings

4min
pages 393-395

Rear Gear Group

3min
pages 387-390

Connecting Rod Bearings

1min
page 384

Bridge Dowels

2min
pages 382-383

Cylinder Heads

4min
pages 377-380

Fuel Injectors

3min
pages 369-370

Valves

1min
page 381

Valve Covers

1min
page 365

Rocker Shafts and Push Rods

4min
pages 366-368

Fuel Injection Control Linkage

6min
pages 371-376

Flywheel Housing

1min
pages 363-364

Flywheel

1min
page 362

Crankshaft Front Seal and Wear Sleeve

2min
pages 354-355

Crankshaft Rear Seal and Wear Sleeve

2min
pages 356-357

Front Drive Housing

4min
pages 358-361

Oil and Water Pump Drive

1min
pages 350-352

Crankshaft Vibration Damper

1min
page 353

Accessory Drive (Front

1min
pages 347-349

Hydramechanical Shutoff Drive

1min
pages 345-346

Hydramechanical Shutoff Control

12min
pages 332-344

Governor Drive

3min
pages 328-331

Governor

1min
pages 326-327

Exhaust Manifolds

1min
page 321

Aftercooler

2min
pages 322-325

Turbochargers

6min
pages 312-320

Oil Cooler

4min
pages 305-311

Oil Sequence Valves

1min
page 304

Oil Pan

2min
pages 300-303

Oil Filter Housing

5min
pages 293-299

Oil Pump

5min
pages 288-292

Fuel Priming Pump, Fuel Transfer Pump

4min
pages 283-287

Fuel Filter Housing

3min
pages 279-282

Water Pump

2min
pages 275-278

Water Temperature Regulators

1min
pages 272-274

Gauge Panel

6min
pages 259-261

Crankcase Breather

1min
pages 270-271

Wiring Diagrams

9min
pages 247-252

3500 Industrial Engines

6min
pages 253-256

Manual Shutoff

3min
pages 257-258

System Checks

1min
pages 243-244

Troubleshooting

4min
pages 239-242

Hydraulic Circuits, Later with an Alarm System

6min
pages 232-238

Hydraulic Circuits (Later

5min
pages 228-231

Electrical Switches

1min
page 210

Air Intake Shutoff

5min
pages 206-208

Shutoff Control Group

6min
pages 199-201

3500 Series Engines

4min
pages 197-198

Auxiliary Controls

2min
pages 192-196

Governor Preparation

3min
page 181

Governor Installation

8min
pages 182-186

Pneumatic Speed Setting Control Troubleshooting

3min
pages 178-179

Air Fuel Ratio Control Troubleshooting

7min
pages 176-177

Pneumatic Mid Speed Control

5min
pages 170-171

Air Fuel Ratio Control

4min
pages 167-168

Pneumatic Speed Control

3min
pages 165-166

Operation of the 3161 Governor

6min
pages 161-163

Governor Types

4min
pages 157-158

Caterpillar, 3161 Governor

2min
pages 155-156

Vibration Damper

1min
page 149

Starting System Air Starting System...................................Deleted

4min
pages 152-154

Checking Crankshaft Deflection (Bend

1min
page 148

Flywheel and Flywheel Housing

4min
pages 146-147

Water Temperature Regulator Test

2min
page 144

Pressure Cap Test

1min
page 142

Valve Clearance

3min
pages 137-138

Clearance Setting

2min
page 136

Air Fuel Ratio Control

1min
page 132

Bridge Adjustment Crankshaft Positions for Valve

2min
page 135

Fuel Setting Adjustment

2min
page 126

Engine Speed Measurement

2min
page 127

Fuel Setting

2min
page 125

Injector Synchronization

2min
pages 123-124

Startup Procedure

1min
page 120

Fuel Timing

1min
page 122

Camshaft Timing

2min
pages 118-119

Fuel Pressure

1min
page 116

Injector Test Sequence

9min
pages 110-115

Air Starting System

4min
pages 86-87

Leak Test for Injector Tester

1min
page 109

Contactor Switch (Water Temperature

4min
page 90

Camshafts

1min
page 85

Air Fuel Ratio Control

1min
pages 73-74

Woodward UG8 Lever Governors

2min
pages 71-72

Fuel Injector

2min
pages 68-70

Fuel Injection Control Linkage

1min
page 67

Engine Design

1min
pages 63-64

Fuel System

3min
pages 65-66

Systems Operation, 3500 Industrial Engines

1min
pages 61-62

Flywheel Housing Runout Alternators and Regulators.......................Deleted

11min
pages 53-60

Flywheel Housing Bore

1min
page 52

Rear Gear Group

2min
pages 45-46

Flywheel

1min
page 47

Upper Front Gear Group (7N4871

1min
page 44

Lower Front Gear Group

2min
pages 42-43

Front Balancer Group (3508

1min
page 41

Crankshaft Wear Sleeves and Seals

1min
page 40

Connecting Rod and Main Bearing Journals

1min
page 38

Pistons and Rings

1min
page 36

Crankshaft

1min
page 39

Water Pump

1min
page 31

Cylinder Block

1min
page 34

Oil Cooler Bypass and Cooling Jet Sequence Valves

1min
page 30

Oil Filter Bypass Valve (Earlier

1min
page 28

Air Intake Shutoff

1min
pages 23-25

and Taperlock Studs

5min
pages 3-4

Fuel Injection Control Group

3min
page 10

Oil Pump

1min
pages 26-27

Camshafts

3min
pages 12-13

Oil Filter Bypass Valve (Later

1min
page 29

Engine Design

5min
pages 5-7
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