John Deere stx38 manuals

TECHNICAL

1

STX30, STX38, and STX46

1

Lawn Tractors

1

STX38 Gear Drive

2

STX38 Hydrostatic Drive

2

STX38 Motorsport Edition

2

METRIC FASTENER TORQUE VALUES

14

METRIC FASTENER TORQUE

15

VALUE - GRADE 7

15

INCH FASTENER TORQUE VALUES

16

O-RING SEAL

17

SERVICE RECOMMENDATIONS

17

O-RING FACE SEAL FITTINGS

19

O-RING BOSS FITTINGS

19

GASOLINE SPECIFICATIONS

20

GASOLINE STORAGE

20

4–CYCLE ENGINES - EUROPE

21

4–CYCLE GASOLINE ENGINE OIL

22

NORTH AMERICA

22

BREAK–IN 4-CYCLE GASOLINE

24

ENGINE OIL - NORTH AMERICA

24

ENGINE OIL - EUROPE

25

HYDROSTATIC TRANSMISSION OIL

26

- NORTH AMERICA

26

- EUROPE

27

ALTERNATIVE LUBRICANTS

28

SYNTHETIC LUBRICANTS

28

LUBRICANT STORAGE

28

MIXING OF LUBRICANTS

28

OIL FILTERS

28

GEAR TRANSMISSION GREASE

29

ANTI-CORROSION GREASE

30

GREASE SPECIFICATIONS

31

GREASE - NORTH AMERICA

31

GREASE - EUROPE

31

SERIAL NUMBER LOCATIONS

32

TORQUE SPECIFICATIONS

40

(Alphabetical Order)

40

ESSENTIAL TOOLS

41

SERVICE PARTS KITS

41

MAIN COMPONENTS

46

ENGINE HARD TO START AND/OR

48

ENGINE STARTER KICKS OUT

48

THROTTLE CABLE ADJUSTMENT

50

CHOKE ADJUSTMENT

50

GOVERNOR ADJUSTMENT

51

FAST IDLE SPEED ADJUSTMENT

51

SLOW IDLE SPEED ADJUSTMENT

52

NON CARB/EPA (EARLY MODELS)

52

ATTENTION

53

CYLINDER COMPRESSION TEST

54

AUTOMATIC COMPRESSION

54

RELEASE (ACR) TEST

54

CRANKCASE VACUUM TEST

55

FUEL FLOW TEST

56

OIL PRESSURE TEST

56

FUEL AND AIR SYSTEM REPAIR

57

REMOVE AND INSTALL FUEL TANK

58

AND DASH PANEL ASSEMBLY

58

REPLACE FUEL FILTER

60

AIR INTAKE SYSTEM COMPONENTS

61

CARBURETOR

61

INSPECT CARBURETOR

62

REMOVE AND INSTALL ENGINE

63

REMOVE AND INSTALL ROCKER

64

INSPECT PUSH ROD

64

REMOVE AND INSTALL CYLINDER

64

REMOVE AND INSTALL VALVES

65

AND SPRINGS

65

INSPECT CYLINDER HEAD

65

INSPECT VALVES

65

ANALYZE VALVES

66

INSPECT VALVE GUIDES

67

RECONDITION VALVE SEATS

67

LAP VALVES

68

INSPECT BREATHER

68

REMOVE AND INSTALL FLYWHEEL

68

REMOVE AND INSTALL CAMSHAFT

69

INSPECT CAMSHAFT

69

MEASURE CAMSHAFT END PLAY

70

HYDRAULIC VALVE LIFTERS—

70

INSPECTION

70

BALANCER SHAFT REMOVAL &

71

BALANCER SHAFT INSPECTION

72

GOVERNOR REMOVAL &

72

GOVERNOR INSPECTION

73

REMOVE PISTON ASSEMBLY

73

ANALYZE PISTON RING WEAR

74

ANALYZE PISTON WEAR

74

PISTON ASSEMBLY

77

MEASUREMENT

77

INSTALL PISTON ASSEMBLY

78

INSTALL CONNECTING ROD

79

CRANKSHAFT REMOVAL &

79

CRANKSHAFT ALIGNMENT

80

REMOVE AND INSTALL OIL PAN

80

CRANKCASE OIL SEAL

81

INSPECT OIL PICKUP

82

OIL PUMP RELIEF VALVE

82

INSPECT ION

82

OIL PUMP INSTALLATION

82

CYLINDER BLOCK REMOVE &

83

INSTALL

83

CYLINDER BLOCK INSPECT

83

CYLINDER BORE DEGLAZING

83

REBORE CYLINDER BLOCK

84

READING ELECTRICAL

89

SCHEMATICS

89

COMMON CIRCUIT TESTS

90

STX38 (SN 210001— )

100

STX46 (SN 240001— )

100

WIRING HARNESS DIAGRAMS

101

WIRING SCHEMATICS

102

STX30 (SN 135160—160000)

104

STX38 (SN 139616—160000)

104

STX38 (SN 160001—210000)

106

CIRCUIT OPERATION AND

110

DIAGNOSIS

110

CRANKING CIRCUIT OPERATION

110

ELECTRICAL

111

CRANKING CIRCUIT DIAGNOSIS

112

IGNITION CIRCUIT OPERATION

118

CHARGING CIRCUIT OPERATION

128

PTO CIRCUIT OPERATION

136

PTO CIRCUIT DIAGNOSIS POINTS

138

PTO AND HEADLIGHTS CIRCUITS

140

OPERATION

140

TESTS AND ADJUSTMENTS

146

GROUND CIRCUIT TESTS

146

BATTERY TEST

147

CHARGE BATTERY

147

BATTERY LOAD TEST

148

REGULATED VOLTAGE OUTPUT

149

UNREGULATED VOLTAGE OUTPUT

149

STARTER SOLENOID TEST

150

STARTER AMP DRAW TEST

150

IGNITION SPARK TEST

151

IGNITION MODULE AIR GAP

151

ADJUSTMENT

151

IGNITION MODULE TEST

152

SEAT SWITCH TEST

152

BRAKE PEDAL/PARK BRAKE

153

SWITCH TESTS

153

BRAKE SWITCH ADJUSTMENT

153

HEADLIGHT SWITCH TEST

154

(OPTIONAL)

154

KEY SWITCH TESTS

154

PTO SWITCH TESTS

155

PTO CLUTCH TEST

155

PTO CLUTCH AIR GAP

156

FLYWHEEL MAGNETS

156

TRANSMISSION NEUTRAL SWITCH

157

REMOVE AND INSTALL KEY

158

SWITCH AND PTO SWITCH

158

REMOVE AND INSTALL SEAT

158

REMOVE AND INSTALL STARTER

159

SOLENOID

159

REMOVE AND INSTALL STATOR

159

AND IGNITION MODULE

159

REPAIR PTO CLUTCH

160

REPLACE BENDIX DRIVE

161

REPAIR STARTER AND REPLACE

161

REPAIR STARTER ARMATURE

162

REMOVE AND INSTALL

163

CONTENTS

165

SPECIFICATIONS

167

GENERAL SPECIFICATIONS

167

REPAIR SPECIFICATIONS

169

OTHER MATERIALS

171

COMPONENT LOCATION

173

STX30 (SN 135159—160758)

175

STX38 (SN 139615—185586)

175

TRANSAXLE—DANA 5-SPEED

176

STX38 (SN 210001—301382)

176

STX38 (SN 301383— )

178

TRACTION DRIVE SYSTEM

182

THEORY OF OPERATION

184

CLUTCH PEDAL AND BELT

184

OPERATION STX30 & STX38

184

(SN —210000)

184

TRANSAXLE OPERATION

187

PEERLESS MODELS

187

915-012A/915-012B

187

BRAKE SYSTEM COMPONENT

190

LOCATION AND OPERATION

190

TROUBLESHOOTING

192

CLUTCH/BRAKE PEDAL LINKAGE

198

AND TRACTION DRIVE SYSTEM

198

BRAKE SPRING ADJUSTMENT

198

BRAKE PAD ADJUSTMENT

199

CLUTCH SPRING ADJUSTMENT

200

SHIFT LINKAGE ADJUSTMENT

201

BRAKES STX30 & STX38

202

(SN —210000) REMOVAL/

202

INSTALLATION

202

TRACTION DRIVE BELT REMOVAL/

203

INSPECTION/INSTALLATION—

203

TRANSAXLE CASE—DISASSEMBLY

213

TRANSAXLE CASE—ASSEMBLY

216

STX38 & STX46 LATE MODEL

217

REMOVAL/INSPECTION/

219

INSTALLATION—

219

TRANSAXLE—REMOVAL/

221

TRANSAXLE—DISASSEMBLY

221

TRANSAXLE ASSEMBLY—

228

BRAKES—ASSEMBLY

232

HYDROSTATIC POWER TRAIN

234

HYDROSTATIC TRANSAXLE

239

BELT TRACTION DRIVE SYSTEM

242

TRANSAXLE AND SHIFT LINKAGE

242

SYSTEM OPERATION

242

BRAKE/NEUTRAL RETURN

244

SYSTEM COMPONENT LOCATION

244

AND OPERATION

244

TRANSPORT (FREE-WHEEL)

247

DIAGNOSIS CONTINUED

252

DRIVE BELT ADJUSTMENT

255

TRANSPORT (FREE-WHEEL) VALVE

255

BELLCRANK SPRING TENSION

256

REPEAT TEST DRIVE

258

INSPECTION/INSTALLATION

259

TRACTION DRIVE BELT

260

TENSIONING SYSTEM REMOVAL/

260

POWER TRAIN LINKAGE SYSTEM

261

TRANSAXLE REMOVAL AND

262

TRANSAXLE DISASSEMBLY

263

DIFFERENTIAL AXLE—

268

DISASSEMBLY

268

PUMP, MOTOR, AND CENTER

270

BLOCK—DISASSEMBLY

270

TRANSAXLE ASSEMBLY

273

TRANSAXLE CASE HALVES—

278

ASSEMBLY

278

BRAKE ASSEMBLY—

278

RESERVOIR COVER AND

279

BREATHER VALVE—ASSEMBLY

279

FAN AND DRIVE SHEAVE—

279

TRANSAXLE BLEED PROCEDURE

280

STEERING

282

SERVICE EQUIPMENT AND TOOLS

283

STEERING BACKLASH

284

STEERING GEAR ASSEMBLY—

285

REMOVAL

285

PEDESTAL BUSHINGS—

286

REPLACEMENT

286

SERVICE EQUIPMENT & TOOLS

289

OTHER MATERIAL

289

FRONT WHEELS—

291

TOE-IN & CAMBER

291

FRONT AXLE

292

REMOVAL & INSTALLATION

292

MOWER DECKS

293

LIFT SYSTEM

293

STX38 (M00STXB595001—750000)

293

STX38 (M00STXB010001—139615)

293

STX38 (M00STXB139616—210000)

294

LIFT LINKAGE REPAIR—

295

STX30 &

295

STX38 (SN —210000)

295

STX38 (SN 210001— ) &

296

30-INCH MOWER DECK

297

SPINDLES—

303

STX38 (SN 210001— ) &

303

STX46 (SN 240001— )

303

MOWER BLADE ADJUSTMENT

305

MOWER DECK BLOWOUT—STX46

307

MOUNTING PLATE

308

MOWER FRAME

308

INDEX - 6

314

Models	Document Type
L120	User Manual John Deere L120 User Manual, 1 pages
LT155	User Manual John Deere LT155 User Manual, 1 pages
345	User Manual John Deere 345 User Manual, 1 pages
X320	User Manual John Deere X320 User Manual, 1 pages
FORWARDERS 1110D	User Manual John Deere FORWARDERS 1110D User Manual, 24 pages

John Deere stx38 manuals

John deere stx38 User Manual (314 pages)

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