Nissan X-Trail 32. Manual — part 1026

EM-1

ENGINE

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SECTION

EM

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EM

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CONTENTS

ENGINE MECHANICAL

MR20DD

PRECAUTION . . . . . . . . . . . ...

6

PRECAUTIONS . . . . . . . . . . . . ...

6

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . . ...

6

Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .....

6

Precaution for Procedure without Cowl Top Cover

. ..

7

Precaution for Handling High Pressure Fuel Sys-
tem . . . . . . . . . . . . . . . . . . ....

7

Special Cautions to Ensure the Safe Disposal of
Sodium-filled Valves . . . . . . . . . . . . ..

7

Precautions For Engine Service . . . . . . . ....

8

Parts Requiring Angle Tightening . . . . . . .....

9

Liquid Gasket . . . . . . . . . . . . . . ....

9

Precautions for Removing Battery Terminal . . ...

10

PREPARATION . . . . . . . . . . ...

12

PREPARATION . . . . . . . . . . . . ..

12

Special Service Tools . . . . . . . . . . . ..

12

Commercial Service Tools . . . . . . . . . ..

14

Lubricant or/and Sealant . . . . . . . . . . .

15

BASIC INSPECTION . . . . . . . . ...

16

CAMSHAFT VALVE CLEARANCE . . . . ...

16

Inspection and Adjustment . . . . . . . . . ..

16

COMPRESSION PRESSURE . . . . . . .

19

Inspection . . . . . . . . . . . . . . . .

19

SYMPTOM DIAGNOSIS . . . . . . . ..

20

NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING . . . . . . .

20

NVH troubleshooting Chart . . . . . . . . . .

20

PERIODIC MAINTENANCE . . . . . .

22

DRIVE BELTS . . . . . . . . . . . . ...

22

Exploded View . . . . . . . . . . . . . . .

22

Removal and Installation . . . . . . . . . . .

22

Inspection . . . . . . . . . . . . . . . .

23

Adjustment . . . . . . . . . . . . . . . ...

23

AIR CLEANER FILTER . . . . . . . . . .

24

Exploded View . . . . . . . . . . . . . . .

24

Removal and Installation . . . . . . . . . . .

25

Inspection (Dry Paper Type) . . . . . . . . .

26

SPARK PLUG . . . . . . . . . . . . ...

27

Exploded View . . . . . . . . . . . . . . .

27

Removal and Installation . . . . . . . . . . .

27

Inspection . . . . . . . . . . . . . . . .

28

REMOVAL AND INSTALLATION . . . ...

29

DRIVE BELT AUTO-TENSIONER . . . . .

29

Exploded View . . . . . . . . . . . . . . .

29

Removal and Installation . . . . . . . . . . .

29

AIR CLEANER AND AIR DUCT . . . . . ...

30

Exploded View . . . . . . . . . . . . . . .

30

Removal and Installation . . . . . . . . . . .

31

Inspection . . . . . . . . . . . . . . . .

32

INTAKE MANIFOLD . . . . . . . . . . .

33

Exploded View . . . . . . . . . . . . . . .

33

Removal and Installation . . . . . . . . . . .

33

EXHAUST MANIFOLD . . . . . . . . . ..

37

Exploded View . . . . . . . . . . . . . . .

37

Removal and Installation . . . . . . . . . . .

37

Inspection . . . . . . . . . . . . . . . .

39

OIL PAN (LOWER) . . . . . . . . . . ...

40

Exploded View . . . . . . . . . . . . . . .

40

Removal and Installation . . . . . . . . . . .

40

Inspection . . . . . . . . . . . . . . . .

42

EM-2

HIGH PRESSURE FUEL PUMP AND FUEL
HOSE . . . . . . . . . . . . . . . . .

43

Exploded View . . . . . . . . . . . . . ....

43

Removal and Installation . . . . . . . . . ....

43

Inspection . . . . . . . . . . . . . . . ...

47

FUEL INJECTOR AND FUEL TUBE . . . . .

48

Exploded View . . . . . . . . . . . . . ....

48

Removal and Installation . . . . . . . . . ....

48

Inspection . . . . . . . . . . . . . . . ...

53

IGNITION COIL, SPARK PLUG AND ROCK-
ER COVER . . . . . . . . . . . . . . .

54

Exploded View . . . . . . . . . . . . . ....

54

Removal and Installation . . . . . . . . . ....

54

UNIT REMOVAL AND INSTALLATION . .

56

ENGINE ASSEMBLY . . . . . . . . . . .

56

Exploded View . . . . . . . . . . . . . ....

56

Removal and Installation . . . . . . . . . ....

56

Inspection . . . . . . . . . . . . . . . ...

60

UNIT DISASSEMBLY AND ASSEMBLY .

61

ENGINE STAND SETTING . . . . . . . .

61

Setting . . . . . . . . . . . . . . . . ....

61

FLYWHEEL . . . . . . . . . . . . . .

62

Exploded View . . . . . . . . . . . . . ....

62

Removal and Installation . . . . . . . . . ....

62

Inspection . . . . . . . . . . . . . . . ...

63

DRIVE PLATE . . . . . . . . . . . . .

65

Exploded View . . . . . . . . . . . . . ....

65

Removal and Installation . . . . . . . . . ....

65

Inspection . . . . . . . . . . . . . . . ...

66

TIMING CHAIN . . . . . . . . . . . . ..

67

Exploded View . . . . . . . . . . . . . ....

67

Removal and Installation . . . . . . . . . ....

68

Inspection . . . . . . . . . . . . . . . ...

78

CAMSHAFT . . . . . . . . . . . . . ...

80

Exploded View . . . . . . . . . . . . . ....

80

Removal and Installation . . . . . . . . . ....

81

Inspection . . . . . . . . . . . . . . . ...

84

OIL SEAL . . . . . . . . . . . . . . ...

89

VALVE OIL SEAL . . . . . . . . . . . . . .

89

VALVE OIL SEAL : Removal and Installation . . .

89

FRONT OIL SEAL . . . . . . . . . . . . . .

90

FRONT OIL SEAL : Removal and Installation . ....

90

REAR OIL SEAL . . . . . . . . . . . . . ...

90

REAR OIL SEAL : Removal and Installation . . ..

90

CYLINDER HEAD . . . . . . . . . . . ..

92

Exploded View . . . . . . . . . . . . . ....

92

Removal and Installation . . . . . . . . . ....

93

Disassembly and Assembly . . . . . . . . .

94

Inspection . . . . . . . . . . . . . . . .

99

OIL PAN (UPPER) . . . . . . . . . . .

102

Exploded View . . . . . . . . . . . . . ..

102

Removal and Installation . . . . . . . . . ...

102

Inspection . . . . . . . . . . . . . . . ..

105

CYLINDER BLOCK . . . . . . . . . . ..

106

Exploded View . . . . . . . . . . . . . ..

106

Disassembly and Assembly . . . . . . . . ..

107

Inspection . . . . . . . . . . . . . . . ..

115

HOW TO SELECT PISTON AND BEARING ...

124

Description . . . . . . . . . . . . . . .

124

Piston . . . . . . . . . . . . . . . . .

124

Connecting Rod Bearing . . . . . . . . . .

125

Main Bearing . . . . . . . . . . . . . .

127

SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .

132

SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . .

132

General Specification . . . . . . . . . . .

132

Drive Belt . . . . . . . . . . . . . . . ..

132

Spark Plug . . . . . . . . . . . . . . .

132

Exhaust Manifold . . . . . . . . . . . . ..

133

Camshaft . . . . . . . . . . . . . . . ...

133

Cylinder Head . . . . . . . . . . . . . ...

135

Cylinder Block . . . . . . . . . . . . . ...

137

Connecting Rod Bearing . . . . . . . . . ...

140

Main Bearing . . . . . . . . . . . . . . .

141

QR25DE

PRECAUTION . . . . . . . . . . ...

142

PRECAUTIONS . . . . . . . . . . . .

142

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . ...

142

Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . .

142

Precaution for Procedure without Cowl Top Cover .

143

Precautions For Engine Service . . . . . . ...

143

Special Cautions to Ensure the Safe Disposal of
Sodium-filled Exhaust Valves . . . . . . . ...

144

Parts Requiring Angle Tightening . . . . . . .

145

Liquid Gasket . . . . . . . . . . . . . .

145

Precautions for Removing Battery Terminal . . .

146

PREPARATION . . . . . . . . . . .

148

PREPARATION . . . . . . . . . . . .

148

Special Service Tools . . . . . . . . . . ..

148

Commercial Service Tools . . . . . . . . ..

149

Lubricant or/and Sealant . . . . . . . . . ...

151

SYSTEM DESCRIPTION . . . . . . ..

152

COMPONENT PARTS . . . . . . . . . ..

152

EM-3

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Intake Camshaft Sprocket . . . . . . . . . .

152

Spark Plug . . . . . . . . . . . . . . . .

152

STRUCTURE AND OPERATION . . . . . .

153

Major Kinetic System . . . . . . . . . . .

153

Valve System . . . . . . . . . . . . . .

155

Intake and Exhaust System . . . . . . . . ..

157

BASIC INSPECTION . . . . . . . . .

159

CAMSHAFT VALVE CLEARANCE . . . . .

159

Inspection and Adjustment . . . . . . . . .

159

COMPRESSION PRESSURE . . . . . . ..

162

Inspection . . . . . . . . . . . . . . . ..

162

SYMPTOM DIAGNOSIS . . . . . . .

164

NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING . . . . . . ..

164

NVH Troubleshooting Chart . . . . . . . . ..

164

PERIODIC MAINTENANCE . . . . . ...

166

DRIVE BELTS . . . . . . . . . . . . ..

166

Exploded View . . . . . . . . . . . . . ..

166

Removal and Installation . . . . . . . . . ...

166

Inspection . . . . . . . . . . . . . . . ..

167

Adjustment . . . . . . . . . . . . . . .

167

AIR CLEANER FILTER . . . . . . . . .

168

Exploded View . . . . . . . . . . . . . ..

168

Removal and Installation . . . . . . . . . ...

169

Inspection (Dry Paper Type) . . . . . . . . .

170

SPARK PLUG . . . . . . . . . . . . ..

171

Exploded View . . . . . . . . . . . . . ..

171

Removal and Installation . . . . . . . . . ...

171

Inspection . . . . . . . . . . . . . . . ..

171

REMOVAL AND INSTALLATION . . . .

173

DRIVE BELT AUTO-TENSIONER . . . . ...

173

Exploded View . . . . . . . . . . . . . ..

173

Removal and Installation . . . . . . . . . ...

173

AIR CLEANER AND AIR DUCT . . . . . ..

174

Exploded View . . . . . . . . . . . . . ..

174

Removal and Installation . . . . . . . . . ...

175

Inspection . . . . . . . . . . . . . . . ..

175

INTAKE MANIFOLD . . . . . . . . . . .

176

Exploded View . . . . . . . . . . . . . ..

176

Removal and Installation . . . . . . . . . ...

176

Inspection . . . . . . . . . . . . . . . ..

179

EXHAUST MANIFOLD AND THREE WAY
CATALYST . . . . . . . . . . . . . ...

180

Exploded View . . . . . . . . . . . . . ..

180

Removal and Installation . . . . . . . . . ...

180

Inspection . . . . . . . . . . . . . . . ..

182

FUEL INJECTOR AND FUEL TUBE . . . ..

184

Exploded View . . . . . . . . . . . . . ...

184

Removal and Installation . . . . . . . . . ...

184

Inspection . . . . . . . . . . . . . . . ..

188

IGNITION COIL, SPARK PLUG AND ROCK-
ER COVER . . . . . . . . . . . . . ..

189

Exploded View . . . . . . . . . . . . . ...

189

Removal and Installation . . . . . . . . . ...

190

OIL PAN (LOWER) . . . . . . . . . . .

193

Exploded View . . . . . . . . . . . . . ...

193

Removal and Installation . . . . . . . . . ...

194

Inspection . . . . . . . . . . . . . . . ..

195

OIL SEAL . . . . . . . . . . . . . .

196

VALVE OIL SEAL . . . . . . . . . . . . .

196

VALVE OIL SEAL : Removal and Installation . .

196

FRONT OIL SEAL . . . . . . . . . . . . .

197

FRONT OIL SEAL : Removal and Installation . ...

197

REAR OIL SEAL . . . . . . . . . . . . . ..

198

REAR OIL SEAL : Removal and Installation . . .

198

UNIT REMOVAL AND INSTALLATION .

200

ENGINE ASSEMBLY . . . . . . . . . ..

200

Exploded View . . . . . . . . . . . . . ...

200

Removal and Installation . . . . . . . . . ...

200

Inspection . . . . . . . . . . . . . . . ..

205

UNIT DISASSEMBLY AND ASSEMBLY ..

207

ENGINE STAND SETTING . . . . . . . .

207

Setting . . . . . . . . . . . . . . . . ...

207

DRIVE PLATE . . . . . . . . . . . . .

208

Exploded View . . . . . . . . . . . . . ...

208

Removal and Installation . . . . . . . . . ...

208

Inspection . . . . . . . . . . . . . . . ..

209

TIMING CHAIN . . . . . . . . . . . .

210

Exploded View . . . . . . . . . . . . . ...

210

Removal and Installation . . . . . . . . . ...

211

Inspection . . . . . . . . . . . . . . . ..

219

CAMSHAFT . . . . . . . . . . . . . .

221

Exploded View . . . . . . . . . . . . . ...

221

Removal and Installation . . . . . . . . . ...

222

Inspection . . . . . . . . . . . . . . . ..

228

CYLINDER HEAD . . . . . . . . . . ...

232

Exploded View . . . . . . . . . . . . . ...

232

Removal and Installation . . . . . . . . . ...

233

Disassembly and Assembly . . . . . . . . ...

234

Inspection . . . . . . . . . . . . . . . ..

239

OIL PAN (UPPER) AND OIL STRAINER . ...

242

Exploded View . . . . . . . . . . . . . ...

242

Removal and Installation . . . . . . . . . ...

243

EM-4

Inspection . . . . . . . . . . . . . . . ..

245

CYLINDER BLOCK . . . . . . . . . . .

247

Exploded View . . . . . . . . . . . . . ...

247

Disassembly and Assembly . . . . . . . . ...

248

Inspection . . . . . . . . . . . . . . . ..

256

HOW TO SELECT PISTON AND BEARING ...

265

Description . . . . . . . . . . . . . . . .

265

Piston . . . . . . . . . . . . . . . . . .

265

Connecting Rod Bearing . . . . . . . . . ...

266

Main Bearing . . . . . . . . . . . . . . .

269

SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ..

274

SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . .

274

General Specification . . . . . . . . . . .

274

Drive belt . . . . . . . . . . . . . . . ...

275

Spark Plug . . . . . . . . . . . . . . .

275

Exhaust Manifold . . . . . . . . . . . . ..

275

Camshaft . . . . . . . . . . . . . . . ...

275

Cylinder Head . . . . . . . . . . . . . ...

277

Cylinder Block . . . . . . . . . . . . . ...

280

Main Bearing . . . . . . . . . . . . . . .

283

Connecting Rod Bearing . . . . . . . . . ..

284

R9M

PRECAUTION . . . . . . . . . . .

286

PRECAUTIONS . . . . . . . . . . . ...

286

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . .

286

Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .

286

Precaution for Procedure without Cowl Top Cover ..

287

Precautions For Engine Service . . . . . . .

287

Parts Requiring Angle Tightening . . . . . . ..

288

Liquid Gasket . . . . . . . . . . . . . . .

288

Precaution for Diesel Equipment . . . . . . ...

289

Precautions for Removing Battery Terminal . . ..

292

PREPARATION . . . . . . . . . . ..

294

PREPARATION . . . . . . . . . . . ...

294

Special Service Tools . . . . . . . . . . .

294

Commercial Service Tools . . . . . . . . . .

295

SYMPTOM DIAGNOSIS . . . . . . .

298

NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING . . . . . . ..

298

NVH Troubleshooting - Engine Noise . . . . .

298

Use the Chart Below to Help You Find the Cause
of the Symptom . . . . . . . . . . . . . .

299

PERIODIC MAINTENANCE . . . . . ...

300

DRIVE BELT . . . . . . . . . . . . .

300

Exploded View . . . . . . . . . . . . . ..

300

Removal and Installation . . . . . . . . . ...

300

Inspection . . . . . . . . . . . . . . . ..

301

Adjustment . . . . . . . . . . . . . . .

302

AIR CLEANER FILTER . . . . . . . . .

303

Exploded View . . . . . . . . . . . . . ..

303

Removal and Installation . . . . . . . . . ...

303

Inspection (Dry Paper Type) . . . . . . . . .

304

Inspection (Viscous Paper Type) . . . . . . ..

305

REMOVAL AND INSTALLATION . . . .

306

ENGINE COVER . . . . . . . . . . . ...

306

Exploded View . . . . . . . . . . . . . ..

306

Removal and Installation . . . . . . . . . ...

306

DRIVE BELT AUTO TENSIONER AND IDLER
PULLEY . . . . . . . . . . . . . . .

307

Exploded View . . . . . . . . . . . . . ..

307

Removal and Installation . . . . . . . . . ...

307

AIR CLEANER AND AIR DUCT . . . . . ...

308

Exploded View . . . . . . . . . . . . . ..

308

Removal and Installation . . . . . . . . . ...

308

Inspection . . . . . . . . . . . . . . . ..

309

CHARGE AIR COOLER . . . . . . . . ...

310

Exploded View . . . . . . . . . . . . . ..

310

Removal and Installation . . . . . . . . . ...

310

Inspection . . . . . . . . . . . . . . . ..

312

INTAKE MANIFOLD . . . . . . . . . . .

313

Exploded View . . . . . . . . . . . . . ..

313

Removal and Installation . . . . . . . . . ...

314

Inspection . . . . . . . . . . . . . . . ..

316

EGR SYSTEM . . . . . . . . . . . . ...

317

Exploded View . . . . . . . . . . . . . ..

317

Removal and Installation . . . . . . . . . ...

317

DPF (DIESEL PARTICULATE FILTER) . . ...

321

Exploded View . . . . . . . . . . . . . ..

321

Removal and installation . . . . . . . . . ...

321

TURBOCHARGER . . . . . . . . . . ...

325

Exploded View . . . . . . . . . . . . . ..

325

Removal and Installation . . . . . . . . . ...

326

Inspection . . . . . . . . . . . . . . . ..

326

EXHAUST MANIFOLD . . . . . . . . . .

328

Exploded View . . . . . . . . . . . . . ..

328

Removal and Installation . . . . . . . . . ...

328

Inspection . . . . . . . . . . . . . . . ..

329

OIL PAN (LOWER) . . . . . . . . . . ...

330

Exploded View . . . . . . . . . . . . . ..

330

Removal and Installation . . . . . . . . . ...

330

Inspection . . . . . . . . . . . . . . . ..

332

GLOW PLUG . . . . . . . . . . . . .

333

Exploded View . . . . . . . . . . . . . ..

333