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Section 9: Torque Values Chart 

Table of Contents

PD10, PD15, PD25 & PD35 Post Hole Diggers 317-048M

8/9/19

43

Section 9: Torque Values Chart

Torque Values Chart for Common Bolt Sizes

Bolt Head Identification

Bolt Head Identification

Bolt Size 

(inches)

Grade 2

Grade 5

Grade 8

Bolt Size

(Metric)

Class 5.8

Class 8.8

Class 10.9

in-tpi

 1

N · m 

2

ft-lb 

3

N · m

ft-lb

N · m

ft-lb

mm x pitch 

4

N · m

ft-lb

N · m

ft-lb

N · m

ft-lb

1/4" - 20

7.4

5.6

11

8

16

12

M 5 X 0.8

4

3

6

5

9

7

1/4" - 28

8.5

6

13

10

18

14

M 6 X 1

7

5

11

8

15

11

5/16" - 18

15

11

24

17

33

25

M 8 X 1.25

17

12

26

19

36

27

5/16" - 24

17

13

26

19

37

27

M 8 X 1

18

13 

28

21

39

29

3/8" - 16

27

20

42

31

59

44

M10 X 1.5

33

24

52

39

72

53

3/8" - 24

31

22

47

35

67

49

M10 X 0.75

39

29

61

45

85

62

7/16" - 14

43

32

67

49

95

70

M12 X 1.75

58

42

91

67

125

93

7/16" - 20

49

36

75

55

105

78

M12 X 1.5

60

44

95

70

130

97

1/2" - 13

66

49

105

76

145

105

M12 X 1

90

66

105

77

145

105

1/2" - 20

75

55

115

85

165

120

M14 X 2

92

68

145

105

200

150

9/16" - 12

95

70

150

110

210

155

M14 X 1.5

99

73

155

115

215

160

9/16" - 18

105

79

165

120

235

170

M16 X 2

145

105

225

165

315

230

5/8" - 11

130

97

205

150

285

210

M16 X 1.5

155

115

240

180

335

245

5/8" - 18

150

110

230

170

325

240

M18 X 2.5

195

145

310

230

405

300

3/4" - 10

235

170

360

265

510

375

M18 X 1.5

220

165

350

260

485

355

3/4" - 16

260

190

405

295

570

420

M20 X 2.5

280

205

440

325

610

450

7/8" - 9

225

165

585

430

820

605

M20 X 1.5

310

230

650

480

900

665

7/8" - 14

250

185

640

475

905

670

M24 X 3

480

355

760

560

1050

780

1" - 8

340

250

875

645

1230

910

M24 X 2

525

390

830

610

1150

845

1" - 12

370

275

955

705

1350

995

M30 X 3.5

960

705

1510

1120

2100

1550

1-1/8" - 7

480

355

1080

795

1750

1290

M30 X 2

1060

785

1680

1240

2320

1710

1-1/8" - 12

540

395

1210

890

1960

1440

M36 X 3.5

1730

1270

2650

1950

3660

2700

1-1/4" - 7

680

500

1520

1120

2460

1820

M36 X 2

1880

1380

2960

2190

4100

3220

1-1/4" - 12

750

555

1680

1240

2730

2010

1

 in-tpi = nominal thread diameter in inches-threads per inch

1-3/8" - 6

890

655

1990

1470

3230

2380

2

 N· m = newton-meters

1-3/8" - 12

1010

745

2270

1670

3680

2710

3

 ft-lb= foot pounds

1-1/2" - 6

1180

870

2640

1950

4290

3160

mm x pitch = nominal thread diameter in millimeters x thread 

pitch

1-1/2" - 12

1330

980

2970

2190

4820

3560

Torque tol 0%, -15% of torquing values. Unless otherwise specified use torque values listed above.

5.8

8.8

10.9

Summary of Contents for PD15 Series

Page 1: ...French or Spanish Language please see your Land Pride dealer Read the Operator s Manual entirely When you see this symbol the subsequent instructions and warnings are serious follow without exception...

Page 2: ...dered the weights and measurements are no longer accurate for your machine Update the record by adding the machine weight and measurements provided in the Specifications Capacities Section of this man...

Page 3: ...Collapsible Length 16 Check Driveline Maximum Length 17 Check Driveline Interference 17 Auger Installation 18 Check Post Hole Digger Clearance 18 Section 2 Adjustments 19 Post Hole Digging Depth 19 S...

Page 4: ...priate App on your smart phone open the App point your phone on the QR code and take a picture Dealer QR Locator The QR code on the left will link you to available dealers for Land Pride products Refe...

Page 5: ...supervision Never allow children to play on the power machine or implement Use extra caution when backing up Before the tractor starts to move look down and behind to make sure the area is clear Safet...

Page 6: ...aws Use towing vehicle and trailer of adequate size and capacity Secure equipment towed on a trailer with tie downs and chains Sudden braking can cause a towed trailer to swerve and upset Reduce speed...

Page 7: ...ear suitable hearing protection such as earmuffs or earplugs Operating equipment safely requires the operator s full attention Avoid wearing headphones while operating equipment Use Seat Belt and ROPS...

Page 8: ...a particles This dust can cause serious injury to the lungs silicosis There are guidelines which should be followed if crystalline silica quartz is present in the dust Be aware of and follow OSHA or o...

Page 9: ...Important Safety Information 8 9 19 5 This page left blank intentionally...

Page 10: ...er To find your nearest dealer visit our dealer locator at www landpride com 3 Some new equipment installed during repair requires safety labels to be affixed to the replaced component as specified by...

Page 11: ...8 9 19 7 30211 72512 14577 20894 135510 Danger Guard Missing Optional Equipment Augers and Extensions 818 545C PD15 PD25 PD35 Only Danger Rotating Parts 818 547C PD15 PD25 PD35 Only Danger To Prevent...

Page 12: ...25 PD35 Post Hole Diggers 317 048M 8 9 19 8 818 646C PD15 PD25 PD35 Only Danger Read Manual 838 094C Warning High Pressure 20894 14740 72512 14597 14597 818 552C Danger Rotating Driveline 818 691C PD1...

Page 13: ...le Diggers 317 048M 8 9 19 9 20853 20853 20853 20853 818 544C PD10 Only Danger To Prevent Serious Injury or Death 818 646C PD10 Only Danger Read Manual 818 547C PD10 Only Danger To Prevent Serious Inj...

Page 14: ...25 PD35 Post Hole Diggers 317 048M 8 9 19 10 PD15 Shown 20854 72512 20856 838 276C PD10 only Danger Moving Parts Label 838 298C Optional support stands PD10 PD15 PD25 PD35 Caution Do Not Lean on 858 7...

Page 15: ...power take off driven Post Hole Diggers that are designed to meet a wide range of customer needs and applications From 6 post holes to 24 tree balls and from homeowner landscaping needs to large indus...

Page 16: ...ssistance Your dealer wants you to be satisfied with your new Post Hole Digger If for any reason you do not understand any part of this manual or are not satisfied with the service received the follow...

Page 17: ...tor in park or set park brake turn off engine and remove switch key to prevent unauthorized starting 5 Relieve all hydraulic pressure to auxiliary hydraulic lines 6 Wait for all components to come to...

Page 18: ...n using a 1 hitch pin NOTE For narrow 3 point tractors use the yoke s inner pins when connecting to PD10 PD15 diggers 7 The boom and yoke pivot connection may need readjusting to best suit your tracto...

Page 19: ...se of the tractor s power take off shield WARNING To avoid serious injury or death Some tractors are equipped with two power take off speeds Do not exceed 300 rpm power take off speed or equipment bre...

Page 20: ...ctor and when alternating between using a quick hitch and a standard 3 point hitch More than one driveline may be required to fit all applications IMPORTANT The power take off shaft and gearbox input...

Page 21: ...en removed for clarity Maximum Driveline Movement During Operation Figure 1 6 2 Slowly and carefully lower and raise the implement to ensure drawbar tires and other equipment on the tractor do not con...

Page 22: ...5 does not interfere with tractor cab If necessary have a second person watch for interference If there is no interference go to step 12 Otherwise continue with step 4 4 If there is an interference lo...

Page 23: ...and if included bushings 7 Secure pivot pin with cotter pin 2 Bend one or more legs of cotter pin to keep cotter pin from falling out If pivot pin 1 is moved closer to the tractor recheck digger clea...

Page 24: ...ent Keep people and animals away while backing up to implement or pulling away from implement Do not operate hydraulic controls while a person or animal is directly behind the power machine or near th...

Page 25: ...oil they can be turned over and mounted at 50 degrees for a more aggressive bite Be sure to tighten all mounting hardware to the proper torque when securing teeth to the Auger See Torque Values Chart...

Page 26: ...red with storage stand Jam nuts to be supplied by customer Tractor 3 Point Hitch Figure 3 2 37000 Boom Yoke 70145 Hook up Post Hole Digger DANGER To avoid serious injury or death A crushing hazard exi...

Page 27: ...lope Injury to personnel and implement may result 1 Lower auger tip onto level hard ground Place tractor in park or neutral and set park brakes Turn tractor engine off and remove switch key before dis...

Page 28: ...ent IMPORTANT Avoid moving or causing side pressure on the auger while in the ground This can damage the auger and drive components IMPORTANT Do not reverse auger rotation when raising it up This will...

Page 29: ...er directly over the spot you want to dig a hole Lock tractor brakes to prevent rolling while digging Lower the tractor s three point hitch to a point where the auger clears the ground by approximatel...

Page 30: ...vel and allowing the root system to reach down underneath to collect needed nutrients Dirt Tree Auger Teeth Refer to Figure 4 4 Auger Extensions Part No Part Description 317 040A PD 7 Auger Extension...

Page 31: ...6 Rock Auger Assembly 317 259A PD 9 Rock Auger Assembly 317 260A PD 12 Rock Auger Assembly 317 261A PD 15 Rock Auger Assembly 317 262A PD 18 Rock Auger Assembly NOTE Do not use this accessory with the...

Page 32: ...own pressure relief to the hydraulic system can damage the post hole digger and tractor when raising auger IMPORTANT The Down Pressure relief valve is factory set to 1500 psi and must not be changed E...

Page 33: ...pin clip 10 26822 26823 Down Pressure Cylinder Plumbing Figure 4 13 Refer to Figure 4 13 11 Install hydraulic plumbing using teflon tape to seal pipe threads Do not tighten connections until after all...

Page 34: ...eat steps 3 to 6 for the right side spacer and down pressure cylinder plate 4 8 Install spacer 6 between cylinder mounting plates 4 5 9 Insert bolt 7 through cylinder mounting plates 4 5 and spacer 6...

Page 35: ...supplied return line to reservoir or sump 15 Continue with Adjust Down Pressure Kit on this page 26829 Return Line to Sump Pressure Line Shuttle Tee Nut Placement IMPORTANT Do not connect return line...

Page 36: ...and Assembly Refer to Figure 4 21 The Storage Stand Assembly consists of an A frame storage stand 7 clamping knobs 13 cradle 5 and a bag of 4 5 16 x 3 4 long bolts 1 Unscrew locknuts 10 and remove 1 2...

Page 37: ...ent Handle Figure 4 22 NOTE Only the tractor operator should position the auger tip 20857 Alignment Handle Alternate Mounting Location Alignment Handle PD15 25 35 Part No 317 042A Refer to Figure 4 23...

Page 38: ...r does not have a movable sign that fits Land Pride s mounting socket 4 you can purchase the slow moving vehicle sign 1 to fit the socket If you have need for mounting this sign on other equipment you...

Page 39: ...e operating the attached implement Read and obey all instructions on the labels Perform scheduled maintenance Check for loose hardware missing parts broken parts structural cracks and excessive wear M...

Page 40: ...ts and gallon sizes by adding TU QT or GL to the end of the aerosol part number 5 Replace all damaged or missing decals 6 Lubricate as noted in Lubrication Points on page 37 7 Store Post Hole Digger o...

Page 41: ...th gearbox level check oil in box by removing plug from side If oil level is low remove top plug and fill with lube until fluid flows from side port Do not overfill As Required 50 Hrs Multi purpose sp...

Page 42: ...3 1 Ratio 1 3 8 3 5 cm 6B spline input shaft 3 18 1 Ratio Gearbox Oil Capacity Type 3 4 Pints 1 61 L of SAE80 90W EP oil 4 6 2 18 L Pints of SAE80 90W EP oil Output Shaft 2 5 1 cm O D Round 3 Point Hi...

Page 43: ...m operating power take off Speed 300 rpm Gearbox 1 3 8 3 5 cm 6B spline input shaft 3 18 1 Ratio 1 3 8 3 5 cm 6B spline input shaft 4 1 Ratio Gearbox oil capacity type 4 6 Pints 2 18 L of SAE80 90W EP...

Page 44: ...s operator to hook up and unhook from the tractor more safely Stand supports the unit and will store the unit when it is not on the tractor PD15 Model Features Benefits 2 7 8 Yoke 3 16 Wall thickness...

Page 45: ...itions Large selection of augers Variety of Dirt Auger and Rock Auger sizes and styles to suit many applications Large selection of bolt on rock heads accessory All sizes of Land Pride PD25 and PD35 P...

Page 46: ...er is seized up Have torque limiter serviced Auger screws itself into the ground Operator did not lower 3 point hitch to the ground slowly Lower 3 point hitch slowly to ground Faulty tractor hydraulic...

Page 47: ...6 X 2 145 105 225 165 315 230 5 8 11 130 97 205 150 285 210 M16 X 1 5 155 115 240 180 335 245 5 8 18 150 110 230 170 325 240 M18 X 2 5 195 145 310 230 405 300 3 4 10 235 170 360 265 510 375 M18 X 1 5...

Page 48: ...Section 9 Torque Values Chart Table of Contents PD10 PD15 PD25 PD35 Post Hole Diggers 317 048M 8 9 19 44...

Page 49: ...designed Misuse also specifically includes failure to properly maintain oil levels grease points and driveline shafts Claims under this Warranty should be made to the dealer which originally sold the...

Page 50: ...Corporate Office P O Box 5060 Salina Kansas 67402 5060 USA www landpride com...

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