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NANO CNG
1

GENERAL
8

1. INTRODUCTION TO CNG SYSTEM
12

2. BENEFITS OF CNG
12

3. FEATURES OF CNG BI-FUEL SYSTEM
12

4. GENERAL INSTRUCTION / PRECAUTIONSWHILE WORKING ON CNG VEHICLE
13

5. IN CASE OF LEAKAGE
15

6. TECHNICAL SPECIFICATIONS
17

7. TIGHTENING TORQUE
21

8. SPECIAL TOOLS
26

9. LIST OF APPROVED CNG CYLINDER TESTING STATION
27

10. SERVICE SCHEDULE
28

11. LUBRICANTS AND COOLANTS
32

2. PRECAUTIONS
34

2.1 GENERAL SAFETY PRECAUTIONS
40

2.2 GENERAL SERVICE PRECAUTIONS
44

ENGINE
46

1. TECHNICAL SPECIFICATION
50

2. REPAIR DATA
51

A. BELT TENSION VALUES
51

3. ENGINE CONTRUCTIONAL DETAIL
52

A. ENGINE
52

B. INTAKE MANIFOLD
52

4. GENERAL SYSTEM OVERVIEW OF Bi-FUEL ENGINE MANAGEMENT SYSTEM
54-55

5. REMOVAL AND REFITMENT OF ENGINEACCESS WINDOW AND ENGINE COVER
58

6. GAS INJECTOR
61

7. GAS RAIL
63

8. PRESSURE AND TEMPERATURE (P&T)SENSOR
65

9. DIAGNOSTIC USER MANUAL
67

4. DRIVETRAIN
88

4.1 CLUTCH
94

4.1.1 GENERAL INFORMATION
96

TECHNICAL SPECIFICATIONS
96

CONSTRUCTION
99

PRECAUTIONS
101

TIGHTENING TORQUES
102

SPECIAL TOOLS
103

GENERAL SYMPTOMS AND DIAGNOSIS
104

TROUBLE SHOOTING
107

MAINTENANCE AND REPAIR
108

A. PRELIMINARY INSPECTION
108

B. CLUTCH SLIPPAGE TEST
108

C. CLUTCH ENGAGEMENT AND DISENGAGEMENT TEST
108

D. CLUTCH PEDAL PLAY ADJUSTMENT
108

E. CLUTCH PEDAL FREE PLAY ADJUSTMENT
109

4.1.2 OVERHAUL
110

EXPLODED VIEWS
110

A. REPLACEMENT OF CLUTCH DISC AND CLUTCH COVER
113

B. CLUTCH ACTUATION MECHANISM OVERHAUL
114

C. CLUTCH CABLE REPLACEMENT
117

TRANSAXLE
120

1 GENERAL INFORMATION
126

A. TECHNICAL SPECIFICATIONS
126

B. PRECAUTIONS
127

C. TIGHTENING TORQUES
128

D. SPECIAL TOOLS
131

E. GENERAL SYMPTOMS AND DIAGNOSIS
135

F. TRANSAXLE OIL REPLACEMENT
136

2. OVERHAULING (EXPLODED VIEWS)
137

A. TRANSAXLE HOUSING
137

B. INPUT SHAFT AND LAY SHAFT
138

C. SHIFTER SHAFT AND SHIFTER SLEEVE
139

D. DIFFERENTIAL
140

E. TOP COVER ASSEMBLY
141

F. SHIFTER LINKAGE
142

3. COMPONENT IDENTIFICATION
144

A. SHIFTER SHAFTS
144

B. SHIFTER FORKS (DOGS)
144

C. SHIFTER SLEEVE
145

4. REMOVAL OF TRANSAXLE FROM VEHICLE
146

5. TRANSAXLE DISMANTLING
149

6. INPUT SHAFT ASSEMBLY
153

7. LAYSHAFT ASSEMBLY
158

8. SHIFTER SHAFT AND SHIFTER FORK
164

9. REVERSE GEAR SHIFTER BRACKET - ASSEMBLY
165

10. DIFFERENTIAL ASSEMBLY
167

11. REAR HALF HOUSING TOP COVER ASSEMBLY
171

12. REAR HALF HOUSING ASSEMBLY
178

13. FRONT HALF HOUSING
180

14. TRANSAXLE ASSEMBLY
182

A. SHIM SELECTION
182

B. ASSEMBLING THE TRANSAXLE
183

15. GEAR SHIFTER LINKAGE
188

A. GEAR SHIFTER CABLE REPLACEMENT
188

B. GEAR SHIFTER ADJUSTMENT
190

4.3 DRIVESHAFT
192

4.3.1 GENERAL INFORMATION
194

TIGHTENING TORQUE
194

SPECIAL TOOL
195

CONSTRUCTIONAL DETAILS
196

EXPLODED VIEW - DRIVESHAFT
196

COMPONENT DESCRIPTION
197

TROUBLESHOOTING AND DIAGNOSIS
198

4.3.2 ON VEHICLE REPAIRS
199

PRECAUTIONS
199

REMOVAL FROM VEHICLE
201

DRIVESHAFT DISMANTLING / ASSEMBLY
204

5. SUSPENSION SYSTEM
210

5.1 GENERAL INFORMATION
216

TECHNICAL SPECIFICATIONS
216

TIGHTENING TORQUES
217

SPECIAL TOOLS
220

LAY OUT OF FRONT SUSPENSION SYSTEM
222

LAY OUT OF REAR SUSPENSION SYSTEM
223

MAINTENANCE AND INSPECTION OF SUSPENSION SYSTEM
224

TROUBLESHOOTING AND DIAGNOSIS
227

5.2 ON VEHICLE REPAIRS
230

FRONT SUSPENSION COMPONENTS
230

STRUT
230

ANTI-ROLL BAR
236

LOWER ARM
237

WHEEL BEARING
239

REAR SUSPENSION COMPONENTS
242

SHOCK ABSORBER
243

COIL SPRING
244

BUMP STOPPER AND SPRING UPPER SEAT
245

SEMI TRAILING ARM
246

WHEEL HUB AND WHEEL BEARING
249

5.3 WHEELS AND TYRES
254

5.3.1 GENERAL INFORMATION
254

TECHNICAL SPECIFICATIONS
254

TIGHTENING TORQUE
255

EXPLODED VIEW
256

MAINTENANCE AND INSPECTION OF TYRE/WHEEL ASSEMBLY
257

5.3.2 ON VEHICLE REPAIRS
258

WHEEL REMOVAL FROM VEHICLE (ON HOIST)
259

WHEEL REMOVAL FROM VEHICLE (WITH JACK)
260

WHEEL BALANCING
261

WHEEL RUNOUT
262

TYRE REPLACEMENT
263

WHEEL ASSEMBLY REPLACEMENT
264

REPAIRING TUBELESS TYRE PUNCTURE
264

TYRE DIAGNOSIS
265

6. BRAKE SYSTEM
274

6.1 GENERAL INFORMATION
280

TECHNICAL SPECIFICATIONS
280

TIGHTENING TORQUES
281

SPECIAL TOOLS
285

SCHEMATIC OF BRAKE HYDRAULIC SYSTEM
286

6.2 COMPONENT DESCRIPTION OF BRAKE SYSTEM
288

FRONT DRUM BRAKES
288

REAR DRUM BRAKES
289

AUTO INCREMENTAL BRAKE
290

TANDEM MASTER CYLINDER (TMC)
291

TMC WITH VACUUM BOOSTER ASSEMBLY
292

WHEEL CYLINDER
295

PARKING BRAKES
296

6.3 MAINTENANCE, ADJUSTMENTS AND INSPECTION
297

BLEEDING OF HYDRAULIC SYSTEM
302

TROUBLESHOOTING AND DIAGNOSIS
304

6.4 ON VEHICLE REPAIRS
311

FRONT BRAKE COMPONENTS
312

FRONT BRAKE DRUM
313

FRONT BRAKE SHOES
315

FRONT BRAKE BACK PLATE
320

REAR BRAKE COMPONENTS
321

REAR BRAKE DRUM
322

REAR BRAKE SHOES
323

REAR BRAKE BACK PLATE
325

TMC
327

WHEEL CYLINDER
336

PARKING BRAKES
342

VACUUM BRAKE BOOSTER
345

BRAKE HOSES/PIPES SCHEMATIC
346

VACUUM LINES
348

7. STEERING
350

7.1 GENERAL INFORMATION
356

TECHNICAL SPECIFICATIONS
356

TIGHTENING TORQUES
357

SPECIAL TOOLS
359

EXPLODED VIEWS
360

SCHEMATIC OF STEERING SYSTEM
362

7.2 MAINTENANCE AND INSPECTION OF STEERING SYSTEM
364

7.3 ON VEHICLE REPAIRS
365

STEERING WHEEL
367

STEERING COLUMN ASSEMBLY
368

STEERING UPPER COLUMN
370

INTERMEDIATE SHAFT
370

STEERING RACK AND PINION ASSEMBLY
371

OVERHAULING OF STEERING RACK AND PINION ASSEMBLY
373

WHEEL ALIGNMENT
382

TROUBLESHOOTING AND DIAGNOSIS
384

FUEL SYSTEM
388

1 INTRODUCTION
392

A. CNG LAYOUT (ON VEHICLE)
393

2. CNG FUEL SYSTEM COMPONENTS
394

A. CNG CYLINDER
394

B. CYLINDER VALVE
396

C. LOW PRESSURE CNG FILTER
401

D. PRESSURE GAUGE
404

E. PRESSURE REGULATOR
405

F. HIGH PRESSURE (H.P) SENSOR
410

G. CNG RECEPTACLE VALVE
412

3. CNG TUBE FITTINGS / JOINTS TIGHTENING INSTRUCTIONS
415

A. SWAGING PROCEDURE
415

B. PROCEDURE FOR NPT THREAD ASSEMBLY
417

4. CNG LEAK DETECTION TESTING
419

5. TROUBLE SHOOTING
420

ELECTRICAL
422

1 TECHNICAL SPECIFICATION
426

2. LOCATION OF FUSE / RELAY / CONTROLLERS ON VEHICLE
427

3. INSTRUMENT CLUSTER
428

4. FUEL GAUGE
429

5. REMOVAL AND REFITTMENT OF BATTERY
430

6. STARTER MOTOR
431

A. EXPLODED VIEW
431

B. ON VEHICLE REMOVAL AND REFITTMENT OF STARTER MOTOR
431

C. STARTER MOTOR OVER HAULING
432

CIRCUIT SCHEMATICS
438-439

FUSE BOX AND RELAY ( CABIN )
442-443

FUSE BOX AND RELAY ( BATTERY MOUNTED )
444-445

CIRCUIT SCHEMATIC OF EMS ECU (SHEET 1 OF 5 )
446-447

CIRCUIT SCHEMATIC OF EMS ECU (SHEET 2 OF 5
448-449

CIRCUIT SCHEMATIC OF EMS ECU (SHEET 3 OF 5 )
450-451

CIRCUIT SCHEMATIC OF EMS ECU (SHEET 4 OF 5)
452-453

CIRCUIT SCHEMATIC OF EMS ECU (SHEET 5 OF 5)
454-455

FUSE DISTRIBUTION (SHEET 1 OF 6)
456-457

FUSE DISTRIBUTION (SHEET 2 OF 6)
458-459

FUSE DISTRIBUTION (SHEET 3 OF 6)
460-461

FUSE DISTRIBUTION (SHEET 4 OF 6)
462-463

FUSE DISTRIBUTION (SHEET 5 OF 6)
464-465

FUSE DISTRIBUTION (SHEET 6 OF 6)
466-467

DTC CODES
470-471

9. BODY
508

9.1 GENERAL INFORMATION
514

TECHNICAL SPECIFICATIONS
514

TIGHTENING TORQUE
515

9.2 ON VEHICLE REPAIRS
519

EXPLODED VIEW - BUMPERS & HOOD
519

FRONT BUMPER
520

FENDER (SIDE BONNET)
521

HOOD, HOOD LATCH, HOOD LATCH CABLE AND HOOD STRIKER
522

FRONT DOOR
526

REAR DOOR
537

REAR SHELF
546

TAILGATE
546

REAR BUMPER
547

DASHBOARD
549

CENTER CONSOLE
552

SEATS & BELTS
553

OUTER REAR VIEW MIRROR (ORVM)
563

SUN VISOR
563

TRIMS
564

FLOOR CARPET
565

WINDSHIELD
568

9.3 PAINT CARE
570

9.4 BODY REPAIR DATA
573

9.5 TROUBLESHOOTING AND DIAGNOSIS
578

10. HVAC
580

10.1 GENERAL INFORMATION
586

TECHNICAL SPECIFICATIONS
586

TIGHTENING TORQUES
587

GENERAL PRECAUTIONS
589

COMPONENT DESCRIPTION
595

10.2 MAINTENANCE OF AC/HVAC SYSTEM
598

TROUBLESHOOTING AND DIAGNOSIS
599

PRESSURE TEST USING MANIFOLD GAUGES
612

FLUSHING OF AC SYSTEM
617

REFRIGERANT RECOVERY, RECYCLING AND RECHARGING
619

A/C SYSTEM PERFORMANCE TEST
621

LEAK TEST SYSTEM
621

10.3 ON VEHICLE REPAIRS
622

CONTROL PANEL ASSEMBLY
623

A/C COMPRESSOR
624

HVAC UNIT
635

BLOWER UNIT
639

BLOWER RESISTER
639

FILTER
640

EVAPORATOR AND EXPANSION VALVE
641

HEATER ASSEMBLY
643

KINEMATICS
644

PRESSURE SWITCH
644

CONDENSER ASSEMBLY
645

DRIER CARTRIDGE/R.D. BOTTLE
647

CONDENSER FAN AND CONDENSER MOTOR
649

REFRIGERANT LINES
650

HEATER LINES
652