Woods PD25.21 Operator's Manual

Post hole digger, 3-point mounted

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POST HOLE DIGGER

PD25.21

PD35.31

PD95.51

MAN1300_2024-12.indd 1

3-POINT MOUNTED

General purpose for 12-25 hp tractors with

Category 1 hitch

Standard-Duty for 20-35 hp tractors with

Category 1 hitch

Heavy-Duty for 35-95 hp tractors with

Category 1 or Category 2 hitch

Includes parts information for

Models PD25.20, PD35.30 and PD95.50

12/17/24 9:28 AM

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Summary of Contents for Woods PD25.21

Page 1 POST HOLE DIGGER 3-POINT MOUNTED PD25.21 General purpose for 12-25 hp tractors with Category 1 hitch Standard-Duty for 20-35 hp tractors with PD35.31 Category 1 hitch Heavy-Duty for 35-95 hp tractors with PD95.51 Category 1 or Category 2 hitch Includes parts information for Models PD25.20, PD35.30 and PD95.50...
Page 2 TO THE OWNER: Read this manual before operating your Woods equipment. The information presented will prepare you to do a better and safer job. Keep this manual handy for ready reference. Require all operators to read this manual carefully and become acquainted with all adjustment and operating procedures before attempting to operate.
Page 3 TABLE OF CONTENTS INTRODUCTION..........2 GENERAL INFORMATION .
Page 4 SPECIFICATIONS POST HOLE DIGGER MODEL PD25.21 PD35.31 PD95.51 CAT 1, 3-Point Hitch CAT 1 CAT 1 or CAT 2 Limited CAT 1 15 - 25 hp 20 - 35 hp 35 - 95 hp Tractor PTO Horsepower (11-19 kW) (15-26 kW)
Page 5 SAFETY RULES ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! sturdy, rough-soled work shoes and protec- Safety is a primary concern in the design and man- tive equipment for eyes, hair, hands, hearing, ufacture of our products. Unfortunately, our efforts and head; and respirator or filter mask where to provide safe equipment can be wiped out by an appropriate.
Page 6 SAFETY RULES ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! ■ Keep bystanders and animals away from equip- ■ Do not operate or transport on steep slopes. ment. Refer to tractor manual for proper ballasting and slope recommendations. ■ Do not operate or transport equipment while under the influence of alcohol or drugs.
Page 7 SAFETY RULES ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! ■ Never replace driveline shear bolt or auger re- ■ Power unit must be equipped with Roll Over taining bolt with a different length, or grade. Protection System (ROPS) or ROPS cab and Always use a SAE grade 2 driveline shear seat belt.
Page 8 SAFETY & INSTRUCTIONAL DECALS ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! Replace Immediately If Damaged! BE CAREFUL! Keep safety decals clean and visible. Use a clean, damp cloth to clean safety decals. Avoid spraying too close to decals when using a pressure washer; high-pressure water can enter through very small scratches or under edges of decals causing them to peel or come off.
Page 9 SAFETY & INSTRUCTIONAL DECALS ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! Replace Immediately If Damaged! 4 - PN S52020300 7 - PN S52066500 13 - PN 617304 CONSULT LOCAL UTILITIES BEFORE DIGGING NOTICE UNHITCHING INSTRUCTIONS: 1. Raise digger to the transport position.
Page 10 OPERATION The post hole digger is intended to dig holes in soil free PREPARATION from rocks, tree roots, and other obstructions. It is de- signed to be mounted on an agricultural tractor 3-point hitch and powered by an agricultural tractor 540 RPM WARNING 6 spline PTO.
Page 11 PRE-OPERATION CHECKLIST ATTACH DIGGER TO TRACTOR Review and follow all safety rules and safety de- WARNING cal instructions on page 5 through page 9. Check that all safety decals are installed and in ■ Make sure spring-activated locking pin or collar good condition.
Page 12 OPERATING TECHNIQUE ■ Keep bystanders and animals 25 feet (7.6 m) WARNING away from equipment working area. ■ Do not use body weight or any body part to force the auger into the ground or to position auger when auger is turning. ■...
Page 13 3b 3/8 NC x 3 Grade 2 shear bolt (For PD35.31 and PD95.51) 3/8 lock washer 3/8 NC hex nut M6x25 set screw (For PD25.21 and PD35.31) M6 jam nut (For PD25.21 and PD35.31) Figure 2. Dislodge Auger 1/4 x 2 Roll Pin (For PD95.51 only) Figure 3.
Page 14 TRANSPORT 7. Keep cutting edges sharp. Sharp cutting edges dig easier and better. Outer cutting edges on larger au- gers wear faster than inner cutting edges; switching WARNING teeth will even wear. 8. Store digger on a hard, level surface in a clean, dry ■...
Page 15 4. Remove parts connected to tractor in following order: (1) Driveline (2) Lower Lift Links (3) Boom. 5a. PD25.21 and PD35.31: Place the driveline on stor- age bracket (6) to help prevent dirt and debris from accumulating in locking collar on the driveline PTO yoke.
Page 16 OWNER SERVICE The information in this section is written for operators NOTICE: No warranty claim can be submitted on a who possess basic mechanical skills. For your protec- gearbox that has run dry. tion, read and follow all safety information in this 3.
Page 17 Cutting edges and center points are replaceable. They should be sharpened or replaced when worn. CD8017 PD25.21 1. Remove carriage bolt (4), lock washer (5), and hex nut (6) holding cutting edge (3) to the auger. 2. Replace or sharpen cutting edge. Cutting edge can be sharpened using a steel file or grinder.
Page 18 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE Auger will not dig Shear bolt sheared – install new shear bolt. Teeth dull – sharpen or replace. Ground too dry and hard, wait until it rains. Auger turning too fast and bouncing – reduce speed. Tall grass has wrapped around auger teeth –...
Page 19 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE Auger digs so far, but See solutions for above. will not dig deeper PTO assembly “bottoms out,” not allowing digger to lower – remove auger from digger and lower digger. Gearbox should lower to the ground; if not, PTO driveline assembly may need to be shortened.
Page 20 ASSEMBLY INSTRUCTIONS For PD95.51 mounted to a tractor with Category 2 WARNING 3-point hitch, install sleeves (10) on lift arm pin. ■ Keep hands, feet, hair, and clothing away from NOTE: On tractors with 3-point arm spacing of 32 equipment while engine is running. Stay clear of inches (813 mm), place mounting pins on the out- all moving parts.
Page 21 Discard the lock washers. 2. Install guard (10) to gearbox using the screws previ- ously removed, and flat washers (14) for the PD25.21 and PD35.31. Use flat washer (16) for the PD95.51. 1 Boom, PD25.21, PD35.31 10 Input guard...
Page 22 SMV SIGN SOCKET INSTALLATION PD95.51 1. Attach manual canister (3) to bottom channel of 1. For the PD25.21 and PD35.31, remove the two boom (2) using two self tapping screws (11). rearmost screws and lock washers on the gear- box cover. For the PD95.51, remove the left rear bolt and lock washer from the gearbox cover.
Page 23 See Figure 15. 4. For PD25.21 and PD35.31, loosen the jam nut (6) so that it is flush with the top of the set screw (7). IMPORTANT: If the driveline has less than 2 inches...
Page 24 2. Place the cutoff portion of the shield against the end of the shaft and use it as a guide. Mark and cut the shaft. min. 6" ( 150 mm ) MAX. min. 2" ( 50 mm ) MIN. Figure 17. Cut Shaft to Length Figure 15.
Page 25 ATTACH AUGER TO GEARBOX INSTALL HANDLE (ROPS TRACTORS ONLY) WARNING 1 Boom ■ Never exceed the recommended auger capaci- 2 Gearbox ty of the post hole digger. Use of an incorrect auger or auger extension can cause equipment 3 5/16 X 1-3/8 damage, loss of operator control and personal Lock Pin injury.
Page 26 DEALER CHECKLISTS DEALER PRE-DELIVERY CHECKLIST (DEALER’S RESPONSIBILITY) Inspect the equipment thoroughly after assembly to Check all bolts to be sure they are properly ensure it is set up properly before delivering it to the torqued. customer. Check that all cotter pins and safety pins are properly installed.
Page 27 POST HOLE DIGGER ASSEMBLY (PD25.20, PD35.30, PD95.50) ..32 - 33 PD25.21 AUGER ASSEMBLY ......34 PD35.31 &...
Page 28 POST HOLE DIGGER ASSEMBLY PD25.21 AND PD35.31 38, 39 CD9258 28 (PD25.21) 29 (PD35.31) GEARBOX USED ON EARLY MODELS (METAL INPUT SHAFT GUARD) CD9433-2 28 Parts MAN1300 ( 12/16/2024 ) MAN1300_2024-12.indd 28 MAN1300_2024-12.indd 28 12/17/24 9:28 AM 12/17/24 9:28 AM...
Page 29 POST HOLE DIGGER ASSEMBLY PARTS LIST PD25.21 AND PD35.31 PD25.21 PD35.31 DESCRIPTION 640391RP 640392RP BOOM W/ DECALS 640394RP 640396RP A-FRAME W/ DECALS 632581 632581 GEARBOX BOX, COMPLETE (INCLUDES 3, 4, 6) (FOR GEARBOXES WITH PLASTIC INPUT SHAFT GUARD) (FOR GEARBOX REPAIR PARTS, SEE PAGE 38)
Page 30 POST HOLE DIGGER ASSEMBLY PD95.51 CD9261 30 Parts MAN1300 ( 12/16/2024 ) MAN1300_2024-12.indd 30 MAN1300_2024-12.indd 30 12/17/24 9:28 AM 12/17/24 9:28 AM...
Page 31 POST HOLE DIGGER ASSEMBLY PARTS LIST PD95.51 PD95.51 DESCRIPTION 640393RP BOOM W/ DECALS 640396RP A-FRAME W/ DECALS 632585 GEARBOX BOX, COMPLETE (INCLUDES 3, 4, 6) (FOR GEARBOX REPAIR PARTS, SEE PAGE 39) 631391 BRACKET, HANDLE 631387RP INPUT GUARD W/ DECALS 631390 OUTPUT GUARD W/ DECALS 602416...
Page 32 POST HOLE DIGGER ASSEMBLY PD25.20, PD35.30, PD95.50 (BUILT DECEMBER 2024 AND EARLIER) 24A (PD25.20) 24B (PD35.30, PD95.50) CD8929 32 Parts MAN1300 ( 12/16/2024 ) MAN1300_2024-12.indd 32 MAN1300_2024-12.indd 32 12/17/24 9:28 AM 12/17/24 9:28 AM...
Page 33 POST HOLE DIGGER ASSEMBLY PARTS LIST PD25.20, PD35.30, PD95.50 (BUILT DECEMBER 2024 AND EARLIER) PD25.20 PD35.30 PD95.50 DESCRIPTION 640391RP 640392RP 640393RP BOOM W/ DECALS 640394RP 640396RP 640396RP A-FRAME W/ DECALS 640400RP 640400RP GEAR BOX, COMPLETE (INCLUDES 3, 4, 5, 6) 631380 631380 631391...
Page 34 PD25.21 AUGER ASSEMBLY PARTS SHOWN COMPATIBLE WITH PD25.20 PART DESCRIPTION 6" SEMI-DOUBLE FLIGHT 634162 AUGER, 36" LONG 9" SEMI-DOUBLE FLIGHT 634161 AUGER, 36" LONG 12" SEMI-DOUBLE FLIGHT 634160 AUGER, 36" LONG S24059200 AUGER, SCREW POINT S24056700 6" CUTTING EDGE FOR 634162 S24057800 9"...
Page 35 PD35.31 & PD95.51 AUGER ASSEMBLY PARTS SHOWN COMPATIBLE WITH PD35.30 AND PD95.50 PART DESCRIPTION PART DESCRIPTION 6" SEMI-DOUBLE FLIGHT AUGER CARBIDE 612862 S24122200 VAR AUGER, 48" LONG CUTTING EDGE 9" SEMI-DOUBLE FLIGHT 1/2 NC X 1-1/2 CARRIAGE 612864 29893 AUGER, 48" LONG BOLT, GR5 ZP 12"...
Page 36 PD25.21, PD35.31 DRIVELINE CD9298-1 PD25.21 PD35.31 DESCRIPTION DRIVELINE, COMPLETE 47.8 X 68.0 LD 632571 (COMPATIBLE WITH PD25.20) DRIVELINE, COMPLETE 49.8 X 68.0 HD 632572 (COMPATIBLE WITH PD35.30) KIT, SHIELD COMPLETE (NOTE: TUBES 632599 632598 WILL NEED TO BE CUT TO LENGTH)
Page 37 PD95.51 DRIVELINE CD9298-2 PD95.51 DESCRIPTION DRIVELINE, COMPLETE 50.0 X 73.5 HD 632573 (COMPATIBLE WITH PD95.50) 632598 KIT, SHIELD COMPLETE 1044050 KIT, LOCK COLLAR REPAIR 1044052 KIT, CROSS AND BEARING Assembly 37 MAN1300 ( 12/16/2024 ) MAN1300_2024-12.indd 37 MAN1300_2024-12.indd 37 12/17/24 9:28 AM 12/17/24 9:28 AM...
Page 38 PD25.21, PD35.31 GEARBOX (COMPATIBLE WITH PD25.20 AND PD35.30) NOTE: COMPLETE GEARBOX CD9299 IS NOT AVAILABLE FOR REPAIR. SEE PAGE 29 FOR GEARBOX WITH SHIELD ASSEMBLY PART DESCRIPTION 613872 KIT, REPAIR STD GEARBOX (INCLUDES 2-6) SEAL, INPUT SHAFT SEAL, OUTPUT SHAFT...
Page 39 PD95.51 GEARBOX (COMPATIBLE WITH PD95.50) CD9300 NOTE: COMPLETE GEARBOX IS NOT AVAILABLE FOR REPAIR. SEE PAGE 31 FOR GEARBOX WITH SHIELD ASSEMBLY PD95.51 DESCRIPTION 615739 KIT, REPAIR HD GEARBOX (INCLUDES 2-7) SEAL, INPUT SHAFT SEAL, OUTPUT SHAFT BEARING, TAPERED ROLLER BEARING, TAPERED ROLLER BEARING, TAPERED ROLLER BEARING, TAPERED ROLLER...
Page 40 BOLT TORQUE CHART Always tighten hardware to these values unless a different torque value or tightening procedure is listed for a specific application. Fasteners must always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware: SAE for SAE hardware and Metric for metric hardware. Make sure fastener threads are clean and you start thread engagement properly.
Page 41 BOLT SIZE CHART NOTICE: Chart shows bolt thread sizes and corresponding head (wrench) sizes for standard SAE and metric bolts. SAE BOLT THREAD SIZES 5/16 10mm 12mm 14mm 16mm 18mm METRIC BOLT THREAD SIZES ABBREVIATIONS AG ....Agriculture HT .
Page 42 INDEX ASSEMBLY OWNER SERVICE Adjust Driveline Length 23 Cleaning Attach A-frame and Boom 20 After Each Use 17 Attach Auger to Gearbox 25 Periodically or Before Extended Storage 17 Attach Gearbox 20 Lubrication Information 16 Fill Gearbox 25 Lubrication Chart 16 Install Driveline 23 Remove Digger From Tractor 14 Install Gearbox Input Shaft Plastic Guard 21...
Page 43 MAN1300_2024-12.indd 43 MAN1300_2024-12.indd 43 12/17/24 9:28 AM 12/17/24 9:28 AM...
Page 44 Woods logo are trademarks of Woods Equipment Company. All other ® trademarks, trade names, or service marks not owned by Woods Equipment Company that appear in this manual are the property of their respec tive companies or mark holders. Specifications subject to change without notice.

This manual is also suitable for:

Pd95.51 Pd35.31