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18

EATON

  

Duraforce HMR Conversion Procedures Manual  E-MOPI-TM005-E   July 2012

Rear-Ported

HMR

Side-Ported

HMR

Minimum
Displacement
Adjustment

Adjustment
Stud (Typical)

Seal Nut 
(Typical)

Minimum
Displacement
Adjustment

Minimum Displacement  

Adjustment Procedure

Set Up and Procedure

Procedure for Adjusting the HMR Minimum 

Displacement

 Note

  

To properly adjust the minimum displacement of the HMR 

motor, it is preferable that the motor free-spin while making 

the adjustment - This would insure that the motor was at 

minimum displacement.If this is not possible, then the HMR 

must be completely unloaded when making the minimum 

displacement adjustment to insure that it is at minimum 

displacement.

 

 Start the prime mover and adjust it to operating 

speed.

 

 Actuate the HMR motor under no load to insure it is 

at minimum displacement.

Note

The HMR motor automatically defaults to minimum 

displacement unless:
•  The motor is loaded beyond the regulation begin setting in 

which case the motor automatically shifts to a displacement 

to accommodate the torque requirement.

•  Control pressure is supplied into the displacement override 

port thus forcing the HMR to maximum displacement.

 

To Adjust the Motor Minimum Displacement:

 

a.  Hold the adjustment stud stationary with the 6mm 

Allen Wrench.

 

b.  Loosen the seal nut with the 19mm wrench.

 

c.  Turn the adjustment stud IN to increase the 

minimum displacement or turn it OUT to decrease 

the minimum displacement.

 

d.  Once the desired minimum displacement has been 

acquired, hold the adjustment stud stationary with 

the 6mm Allen wrench and tighten the seal nut 

with the 19mm wrench. The proper torque for the 

seal nut is 60 N-m (44 ft-lb). 

 

Note

 

The following table illustrates 
the recommended minimum 
displacements and allowable 
rotational speeds for both Max. 
and Min. displacement. The 
HMR motors should NOT be 
operated at higher speeds if the 
recommended displacements 
are used, unless specifically 
approved by Eaton Engineering. 
If higher rotational speeds are 
required for your application, you 
must consult Eaton Engineering 
for the required minimum 
displacement setting.

1

2

3

  Size 

 

55 

75 

105 

135 

165

  Max Displacement 

18.3   25.3   35.0  

45.2   55.2 

  Limit (CC)
 

Continuous Max Speed at Max 

  Speed 

Displacement 

4100  3800  3500 

3200  3100

  (RPM) 

Continuous Max Speed at Min

 

Displacement 

4700 4400 4100  3700 3500

Содержание DuraForce HMR Series

Страница 1: ...Eaton DuraForce HMR Conversion Procedures...

Страница 2: ...Orifices Set Up and Procedure 15 Maximum Displacement Adjustment Set up and Procedure 17 Minimum Displacement Adjustment Set up and Procedure 18 Adjust Crossover Relief Set up and Procedure 19 Operati...

Страница 3: ...base unit you want to convert Cleanliness Cleanliness is extremely important when repairing a hydrostatic pump or motor Before disconnecting the lines clean foreign material from exterior of unit Wor...

Страница 4: ...l l l l 16 Control Solenoids 0 not applicable l l l l l l A AMP 12V l l l l l l B AMP 24 V l l l l l l C DIN 12 V D DIN 24 V E Deutsch 12V F Deutsch 24V 17 Response Orifices A 0 6 mm E 1 0 mm l l l l...

Страница 5: ...aforce HMR Conversion Procedures Manual E MOPI TM005 E July 2012 Blocking the Case Flushing Feature Set Up Important This procedure must be performed in a clean environment using clean Parts Tools and...

Страница 6: ...please move to Procedure to Disable the Purge Valve section near the end of this document 1 Remove the spring with the needle nose pliers The safest way to remove spools springs etc like this is with...

Страница 7: ...with Standard or Optimized Shuttle Valve Assemblies For unit with Dampened Shuttle Valve Assembly please move to Procedure to Disable the Purge Valve section near the end of this document Reinstall th...

Страница 8: ...dure to Disable the Purge Valve Remove the purge valve Important This procedure applies to HMR Motors with Standard Optimized or Dampened Shuttle Valve Assemblies 1 Replace the existing purge valve wi...

Страница 9: ...Loop Purge Valve with the 13mm wrench Install the Open Loop Purge Valve and tighten it with the 17mm wrench Torque it to 15 N m 11 ft lb Procedure to Exchange an Open Loop Purge Valve with a Closed L...

Страница 10: ...hough these locations may differ from one unit type to the other the internal parts are the same This procedure must be performed in a clean environment using clean Parts Tools and Lubricants Importan...

Страница 11: ...the Loctite used to keep the shuttle body in place heat the area directly above the shuttle assembly as shown here 3 Remove the first set of shuttle spool spring and shim combination 2 Use the specia...

Страница 12: ...the rear head and torque it using the special Eaton tool refer to the torque chart at the bottom of this page Note An HMV motor is used to show the necessary steps throughout this document The same p...

Страница 13: ...ing DOR block with the 3mm Allen wrench Keep the S H C S with the DOR being removed Do NOT reused them with the new DOR block Remove the existing DOR block from the motor control Make sure that the O...

Страница 14: ...a clean environment using clean Parts Tools and Lubricants Remove the existing motor control by removing the two S H C S with the 6mm Allen wrench Keep the two S H C S for reuse Make sure to remove t...

Страница 15: ...Lubricants Exchanging Response Orifices on HMR Motors Set Up and Procedure Remove the four bolts that secure the control block as shown here 1 Remove the control block as shown here 2 Note Often the...

Страница 16: ...into the control block as shown here 5 Position the control block on the motors rear head as shown here 6 Exchanging Response Orifices on HMR Motors continued Set Up and Procedure Important Inspect al...

Страница 17: ...ustment Depending on the specific configuration of your motor it may or may not have a maximum displacement adjustment For those HMR motors without a maximum displacement adjustment please ignore this...

Страница 18: ...ntrol pressure is supplied into the displacement override port thus forcing the HMR to maximum displacement To Adjust the Motor Minimum Displacement a Hold the adjustment stud stationary with the 6mm...

Страница 19: ...her reaches this maximum limit stop all testing until the temperature cools off While supplying flow to Workport A read the pressure on the gauge This is the setting for the Workport A Relief Valve To...

Страница 20: ...The required purity of the hydraulic oil must be ensured during filling or topping up When drums canisters or large capacity tanks are used the oil generally has to be filtered We recommend the implem...

Страница 21: ...C 20 to 90 Working viscosity range mm s cSt 10 to 80 Optimum working viscosity mm s cSt 15 to 30 Max viscosity short time start up mm s cSt 1000 Permitted Pressure Fluids Recommended Viscosity Ranges...

Страница 22: ...dard p 9 Part Description Qty 0009630107 O ring 1 6003451008 Valve Sleeve 1 9516003252 Ball 1 0009211007 Spring 1 9289003006 Shim 0 5mm as req d 9289003003 Shim 0 1mm as req d 6003435512 Screw Plug 1...

Страница 23: ...rifice 0 9mm 2 0009037045 Orifice 1 0mm 2 0009037050 Orifice 1 2mm 2 0009037046 Orifice 1 5mm 2 0009037511 Orifice 1 8mm 2 0009037510 Orifice 2 1mm 2 O rings for Controls p 14 Part Description Qty 000...

Страница 24: ...p Europe Route de la Longeraie 7 1110 Morges Switzerland Tel 41 0 21 811 4600 Fax 41 0 21 811 4601 Eaton Hydraulics Group Asia Pacific Eaton Building No 7 Lane 280 Linhong Road Changning District Shan...

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