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Greenlee / A Textron Company

4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

13

HRD-1 and HRD-58 Hydraulic Ground Rod Drivers

Maintenance 

(cont’d)

Accumulator Recharging Procedure

Accumulator is charged with nitrogen under high 

pressure. This pressure must be unloaded before 

dismounting.
Failure to observe this warning could result in 

severe injury or death.

  1.  Check that the oil inlet of the accumulator is 

 depressurized.

  2.  Remove the protective cap over the charging 

screw (9) of the accumulator. The socket head 

screw must be perfectly clean.

  3.  Loosen the charging screw on top of the accumu-

lator (maximum of two turns). Totally neutralize the 

pressure before dismounting the accumulator.

  4.  Unscrew the accumulator cover (10), take out 

the diaphragm (11), and check for leakage and 

damage.

  5.  Clean, check, and replace damaged or worn 

parts.

  6.  Grease the seal faces of the accumulator body 

(12) and the accumulator cover (10) with silicone.

  7.  Spray both sides of the diaphragm with silicone. 

Place the diaphragm with its bead pointing 

 downward so that it fits in the groove of the  

accumulator body (12).

  8.  Unscrew the charging screw and replace the seal 

ring (13).

  9.  Grease the thread of the accumulator cover (10) 

with copper grease and tighten to approximately  

200 Nm (148 ft-lb).

10.  Fasten the charging screw lightly, and loosen it 

two turns afterward.

11.  Mount the filling device on the filling socket of 

the accumulator cover and fasten it lightly while 

turning the handle (2) forward and backward, 

ensuring that the hexagon resiliently fits into the 

charging screw.

12.  Close the bleeder valve (5) by turning it clockwise.
13.  Connect the hose (7) to the check valve (6).
14.  Connect the free end of the hose directly to the 

nitrogen bottle by using the reducing nipple.

Note:  Use only pure nitrogen.

15.  Read the pressure on the gauge (4). Carefully 

open the valve of the nitrogen bottle (1) and 

charge with nitrogen until the pressure is 

 approximately 20% higher than required charging 

 pressure. Close the valve of the nitrogen bottle.

16.  If the gauge (4) shows too high a nitrogen pres-

sure, loosen the bleeder valve (5) until the required 

pressure is achieved.

17.  Close the charging screw (9) of the accumulator 

by turning the handle (2) clockwise.

18.  Unload the nitrogen hose by opening the bleeder 

valve (5).

19.  Dismount the filling device and check the charging 

screw (9) for leakage with drops of oil.

20.  Fit the protective cap over the accumulator.

N

2

1

8

7

3

4

9

13

10

11

12

6

5

2

  (1)  Valve of nitrogen bottle
  (2)  Handle
  (3)  Filling adaptor
  (4)  Gauge
  (5)  Bleeder valve
  (6)  Check valve
  (7)  Hose, approximately  

3 m (10 ft)

  (8)  Reducing nipple  

(24.32-14WFG)

  50027182 

Accumulator filling device 

 

 

(includes items 2–8)

  50027174 

Accumulator kit (fully charged) 

 

 

(includes items 9–14)

  (9)  Charging screw
(10)  Accumulator 

cover

(11)  Diaphragm
(12)  Accumulator 

body

(13)  Seal ring
(14)  Protective cap 

(not shown)

Summary of Contents for HRD-1

Page 1: ...nd Rod Drivers 52033905 REV 5 2011 Greenlee Textron Inc 6 11 Serial Codes GMJ and GMK Read and understand all of the instructions and safety information in this manual before operating or servicing th...

Page 2: ...his tool Observe all of the safety information provided Purpose of this Manual This manual is intended to familiarize personnel with the safe operation and maintenance procedures for the following Gre...

Page 3: ...is tool Failure to observe this warning could result in severe injury or death Skin injection hazard Do not use hands to check for leaks Do not hold hose or couplers while the hydraulic system is pres...

Page 4: ...ngs while the power source is running or if the hydraulic fluid is hot Hot hydraulic fluid could cause serious burns Do not reverse hydraulic flow Operation with hydraulic flow reversed can cause tool...

Page 5: ...Damaged hoses or couplings may fail resulting in injury or property damage Use this tool for manufacturer s intended purpose only Use other than that which is described in this manual may result in in...

Page 6: ...88 USA 815 397 7070 6 HRD 1 and HRD 58 Hydraulic Ground Rod Drivers 1 3 2 4 5 8 7 6 Ground Rod Drivers 1 Lifting Bracket 2 Return tank Port 3 Serial Number 4 Driver Body 5 Operator Handles 6 Front Hea...

Page 7: ...o not exceed the following hydraulic power source maximums Hydraulic flow 30 l min 8 gpm Pressure relief 160 bar 2300 psi Back pressure 28 bar 405 psi Failure to observe this warning could result in s...

Page 8: ...y not be operated if the oil viscosity is not within the allowable area or if the temperature is not within 20 C to 70 C 4 F to 158 F The viscosity index expresses the dependence of the viscosity on t...

Page 9: ...be used on both open center and closed center systems by adjusting the OC CC selection spool For open center pump operation use a flat head screwdriver to turn the spool counterclockwise until it back...

Page 10: ...Hydraulic flow 30 l min 8 gpm Pressure relief 160 bar 2300 psi Back pressure 28 bar 405 psi Failure to observe this warning could result in severe injury or death Wear eye protection when operating o...

Page 11: ...vertical position as shown Notes Rods longer than 2 m 6 may require a second person to lift the driver and steady the rod When the ground rod driver is within reach grasp both handles firmly 4 To sta...

Page 12: ...th federal state and local laws or ordinances Daily 1 Wipe all tool surfaces clean 2 Inspect the hydraulic hoses and fittings for signs of leaks cracks wear or damage Replace if necessary 3 Install du...

Page 13: ...it two turns afterward 11 Mount the filling device on the filling socket of the accumulator cover and fasten it lightly while turning the handle 2 forward and backward ensuring that the hexagon resil...

Page 14: ...tly Refer to the power source operator s manual Set the flow and pressure to correspond with the tool Hydraulic fluid level low Check the fluid level Check system for leaks Air in the hydraulic system...

Page 15: ...15 HRD 1 and HRD 58 Hydraulic Ground Rod Drivers Illustration Main 24 26 59 58 25 40 3 82 80 83 81 21 20 44 49 40 17 8 11 5 57 6 9 70 Nm 52 ft lb 19 50 80 Nm 59 ft lb 10 41 2 40 52 53 51 22 15 100 Nm...

Page 16: ...ng 25 12x1 78 1 24 Locking ring 1 25 Seal 32 40x6 1 26 Seal 32 45x7 10 1 27 Seal ring 1 2 2 28 50028766 Adapter 08 12 2 31 50028820 Trigger cartridge 1 Key Part No Description Qty Key Part No Descript...

Page 17: ...and Lifting Bracket 100 50028944 Handle W A 2 101 50028960 Bottom plate 1 102 50031082 Screw M10x20 4 103 50028758 Washer 10 4 104 50028979 Lifting bracket 1 Hoses 106 50028723 Whip hose 70 2 107 5043...

Page 18: ...50028790 Nose part 1 complete 120 50028898 Nose part 1 121 50028901 Anvil bushing 1 122 50028910 Anvil 25 mm 1 1 123 52026861 Spacer 1 124 52022622 Spring 1 125 50023756 Screw M10x55 2 HRD 58 50028804...

Page 19: ...Greenlee A Textron Company 4455 Boeing Dr Rockford IL 61109 2988 USA 815 397 7070 19 HRD 1 and HRD 58 Hydraulic Ground Rod Drivers...

Page 20: ...8 USA 815 397 7070 An ISO 9001 Company Greenlee Textron Inc is a subsidiary of Textron Inc USA Tel 800 435 0786 Fax 800 451 2632 Canada Tel 800 435 0786 Fax 800 524 2853 International Tel 1 815 397 70...

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