Service Manual - Eatonpub/@eaton/@hyd/... · 4 EATON Duraforce HMF Service Manual E-MOPI-TS010-E July 2012 Priority Swing Motor Regulation Begin Adjustment Procedure Adjustment Procedure

Eaton® DuraForce™ HMF

Service Manual

2 EATON Duraforce HMF Service Manual E-MOPI-TS010-E July 2012

Content Page #

Table of Contents

Priority Swing Motor Regulation Begin Adjustment Procedure

Set Up 3

Procedure 4

VD20-05 Externally Adjustable Relief Valve Adjustment Procedure

Set Up 5

Procedure for the "High" Setting 6

Procedure for the "Low" Setting 6

Procedure for the Deceleration Slope Position 7

Priority Swing Motor Torque Curve and Max Torque Adjustment Procedure

Set Up 8

Procedure for the Torque Curve Position 9

Procedure for the Maximum Torque Value 10

Priority Swing Motor Flow Stop Adjustment Procedure

Set Up & Procedure 11

Procedure to Adjust Single Setting Cross-Over Relief Valves on HMR Motors

Set Up & Procedure 12

Procedure to Adjust VD20-03 Dual-Stage Relief Valves

High Pressure Adjustment Procedure 13

Low Pressure Adjustment Procedure 14

Environmental Concerns

Protection of the natural fundamentals of life is one of our predominant tasks. We are continuously improving the protection of the environment as far as applications are concerned. We encourage you to contribute your share to comply with this demand. In connection with work to be performed, the environmental regulations of the machine manufacturer must be respected.

In general:

• Greases and oils which cannot be used any more have to be collected. They are normally a threat to water reserves and must be kept away from the environment.

• Adhere to national and local regulations for waste disposal.

Important

You have been provided information on the conversion of DuraForce products. Proper application of the information requires specific training and may require use of specialized tooling and equipment. All requests for training must be coordinated through your Eaton Account Manager. He can also provide you price and availability of any specialized tooling. If you choose to proceed with the conversion of the DuraForce products absent the necessary training and/or these specialized tools, you do so at your risk.

Eaton will accept no claim for warranty resulting from deficiencies in the conversion. Please refer to the Eaton literature web site for warranty information at www.eaton.com/hydraulics/warranty.

3EATON Duraforce HMF Service Manual E-MOPI-TS010-E July 2012

Priority Swing Motor Regulation Begin Adjustment ProcedureSet Up

Tools / Equipment Required

• 5mm Allen wrench (HMF55 Motors ONLY)

• 6mm Allen wrench (HMF75 and HMF105 Motors ONLY)

• 0-500 psi Dp-gauge (Optional: Two, 0-600 psi pressure gauges or transducers)

For HMF55 Motors:

• P/N 000.914.5495, 0.8mm shim (as required)



For HMF75 and HMF105 Motors:







Note

When setting up or adjusting the HMF Priority Swing Motor, follow the instructions in this service manual in sequential order.

WARNING

If performing this procedure on a vehicle, care must be taken. The pump will be put on stroke during this procedure, hence all personnel should be removed from the area of the machine.

Reference Data

For HMF Priority Swing Motors containing "standard" Spool Centering Springs, the following spring-rate data can be used as a reference to help you determine the thickness of shims needed to increase or decrease the regulation begin pressure to the desired setting:

• (For HMF55 Motors) 26 psi/mm

• (For HMF75 and HMF105 Motors) 22 psi/mm

For those motors NOT containing "standard" Spool Centering Springs, please consult EatonEngineering to see if data is available.


Priority Swing Motor Regulation Begin Adjustment ProcedureAdjustment Procedure

WARNING


1. Connect the "HI" side of the Dp-gauge to Port "X".

2. Connect the "LO" side of the Dp-gauge to Port "Y".

3. Slowly supply pilot pressure into Port "X". Simulataneously monitor the Dp-gauge and the function the HMF motor is actuating.

4. Record the pressure on the Dp-gauge when the function just starts to move. This is the regulation begin pressure for Workport "A".

5. To adjust the regulation begin pressure:

a. Remove the End Cap on the opposite side of Workport "A" (the end cap containing the "B" Side Shims) by removing the two socket-head cap screws (SHCS).

b. Make sure that the O-Ring remains in the end cap o-ring groove.

c. Remove the Spool Cap and the Spool Centering Spring from the end cap.

d. As required, ADD shims to the end cap to increase the regulation begin pressure or REMOVE shims to decrease the regulation begin pressure.

e. Reinstall all of the parts removed in steps b and c. Make sure that the O-Ring is properly installed into the end cap o-ring groove to avoid damaging it.

f. Reinstall the two SHCS from step a. The proper torque for each SHCS is:

- (For HMF55 Motors)…………………………..9.5 N-m (7 ft-lb)

- (For HMF75 and HMF105 Motors)………25 N-m (18 ft-lb)

g. Repeat steps #3 and #4 to verify that the desired regulation begin pressure has been acquired.

6. Connect the "HI" side of the Dp-gauge to Port "Y".

7. Connect the "LO" side of the Dp-gauge to Port "X".

8. Slowly supply pilot pressure into Port "Y". Simulataneously monitor the Dp-gauge and the function the HMF motor is actuating.

9. Record the pressure on the Dp-gauge when the function just starts to move. This is the regulation begin pressure for Workport "B".

10. To adjust the regulation begin pressure:

a. Remove the End Cap on the opposite side of Workport "B" (the end cap containing the "A" Side Shims) by removing the two socket-head cap screws (SHCS).

b. Make sure that the O-Ring remains in the end cap o-ring groove.

c. Remove the Spool Cap and the Spool Centering Spring from the end cap.

d. As required, ADD shims to the end cap to increase the regulation begin pressure or REMOVE shims to decrease the regulation begin pressure.

e. Reinstall all of the parts removed in steps b and c. Make sure that the O-Ring is properly installed into the end cap o-ring groove to avoid damaging it.

f. Reinstall the two SHCS from step a. The proper torque for each SHCS is:

- (For HMF55 Motors)…………………………..9.5 N-m (7 ft-lb)

- (For HMF75 and HMF105 Motors)………25 N-m (18 ft-lb)

g. Repeat steps #8 and #9 to verify that the desired regulation begin pressure has been acquired.

11. Remove the Dp-gauge from the motor.

Adjustment Procedure for the Motor Regulation Begin Pressure:

Note

Reference the section above titled "Tools/Equipment Required" for the part numbers corresponding to the HMF motor you are working with. Please note that each size motor has multiple shim thicknesses available.

Note



VD20-05 Externally Adjustable Relief Valve Adjustment ProcedureSet Up


• 36mm wrench

• 30mm wrench

• 10mm closed-end, offset wrench

• 10mm open-end wrench (Optional: small adjustable wrench)

• 3mm Allen wrench

• 0-7000 psi pressure gauge (Optional: 0-7000 psi pressure transducer)

Important

All supplemental relief valves used in the same circuit as the VD20-05 relief valves must be set higher than the desired settings for the VD20-05 relief valves. This must be done prior to performing the steps in this Service Bulletin.

WARNING


In order to successfully measure and adjust the VD20-05 relief valve settings, the maximum torque pressure must be set higher than the desired "High" setting for the VD20-05. The adjustment to the maximum torque pressure must be done prior to using this

Service Bulletin. To do so, perform the following steps:

1. On the Maximum Torque Adjustment Valve, hold the Adjustment Screw stationary with a 10mm wrench, and loosen the Locking Nut with the other 10mm wrench.

2. Turn the Adjustment Screw IN fully until it can no longer be turned in.

3. While holding the Adjustment Screw stationary, tighten the Locking Nut.

Upon completion of this Service Bulletin, you must properly readjust the Maximum Torque Adjustment Valve. To do this, refer to page 10 for instructions on how to do this.

pilot pressure

wor

kpo r

t pre

ssur

e

Maximum TorquePressure

Torque Curve"Low"Setting

"High" Setting

The position of the deceleration slope can be moved upward ordownward, as illustrated here. Only the position of the slopecan be changed, NOT the angle of the slope.

Important


VD20-05 Externally Adjustable Relief Valve Adjustment ProcedureAdjustment Procedure

WARNING


1. Install the pressure gauge to measure pressure at Port "LS". If this is not possible, install the pressure gauge at the most accessible location to measure load sense pressure.

2. For this adjustment, the function that the motor actuates must be locked as to prevent the motor from rotating. This will force the motor to the maximum pressure when actuated.

3. Supply full pilot pressure into Port "X".

4. Read the pressure on the gauge - This is the "High" Setting of the VD20-05.

5. To adjust the "High" Setting:

a. Refer to the illustration on page 5 of this Service Bulletin to insure that you are making adjustments to the correct VD20-05.

b. Hold the Adjustment for "High" Setting stationary with the 30mm wrench, and loosen the Locking Nut for "High" Setting with the 36mm wrench.

c. Turn the Adjustment for "High" Setting IN to increase the pressure setting or OUT to decrease the pressure setting.

d. Once the desired pressure setting has been acquired, hold the Adjustment for "High" Setting stationary and tighten the Locking Nut for "High" Setting.

6. Supply full pilot pressure into Port "Y".

7. Read the pressure on the gauge - This is the "High" Setting of the other VD20-05.

8. To adjust the "High" Setting, follow step #5 above.

Adjustment Procedure for the "High" Setting on the VD20-05:

1. Install the pressure gauge to measure pressure at Port "LS". If this is not possible, install the pressure gauge at the most accessible location to measure load sense pressure.

2. As described in the note to the left, supply full pilot pressure into Port "X" to fully actuate the motor, then allow the function to coast to a stop. As the function is coasting to a stop, read the pressure on the gauge - This is the "Low" Setting of the VD20-05.

3. To adjust the "Low" Setting:

a. Refer to the illustration on page 5 of this Service Bulletin to insure that you are making adjustments to the correct VD20-05.

b. Hold the Adjustment for "Low" Setting stationary with the 22mm-wide flat screwdriver, and loosen the Locking Nut for "Low" Setting with the 30mm wrench.

c. Turn the Adjustment for "Low" Setting IN to increase the pressure setting or OUT to decrease the pressure setting.

d. Once the desired pressure setting has been acquired, hold the Adjustment for "Low" Setting stationary and tighten the Locking Nut for "Low" Setting.

4. As described in the note to the left, supply full pilot pressure into Port "Y" to fully actuate the motor, then allow the function to coast to a stop. As the function is coasting to a stop, read the pressure on the gauge - This is the "Low" Setting of the other VD20-05.

5. To adjust the "Low" Setting, follow step #3 above.

Adjustment Procedure for the "Low" Setting on the VD20-05:

Note

To measure and adjust the "Low" Setting, there cannot be any pilot pressure in either Port "X" or Port "Y". Therefore, the function that the motor is actuating must be fully actuated to maximum speed. Once at maximum speed, the pilot pressure must be removed completely and the function must coast to a stop. As the function coasts to a stop, oil is passing over the VD20-05 relief valve. It is under this condition that the VD20-05 relief valve is at the "Low" Setting and a pressure measurement can be made.


Note

The HMF Priority Swing Motor is only equipped with the VD20-05 dual-stage relief valves. For those who only need or want a single setting relief valve for this motor, you must still use the VD20-05 relief valves. To get the function of a single setting relief valve, adjust the "High" Setting to the desired relief valve pressure. Then do the following for both VD20-05 relief valves:

1. Hold the Adjustment for "Low" Setting stationary with the 22mm-wide flat screwdriver, and loosen the Locking Nut for "Low" Setting with the 30mm wrench.

2. Turn the Adjustment for "Low" Setting IN fully until it can no longer be turned in.

3. Hold the Adjustment for "Low" Setting stationary and tighten the Locking Nut for "Low" Setting.

VD20-05 Externally Adjustable Relief Valve Adjustment ProcedureAdjustment Procedure

WARNING


Note

The deceleration slope feature of the VD20-05 provides the operator with a feel of smooth, controllable deceleration. The deceleration force is proportional to the pilot pressure supplied into either Port "X” or Port "Y" by the operator. By removing the pilot pressure, the VD20-05 defaults to the "Low" Setting. If the operator changes the pilot pressure from full to none, the VD20-05 switches from the "High" Setting to the "Low" Setting and by-passes the deceleration slope. The position of the deceleration slope depends solely on how the operator wants the motor to decelerate.

To make the deceleration more controllable, the position of the deceleration slope should be moved downward. To make the deceleration less controllable, the position of the deceleration slope should be moved upward. Again, the final deceleration slope position should be adjusted to satisfy the operator's feel for deceleration.

1. Have the operator run the motor. If the motor deceleration is satisfactory, then disregard the rest of this Service Bulletin. Otherwise, continue to the next step.

2. To adjust the position of the deceleration slope:

a. Hold the Adjustment Stud for Deceleration Slope Position stationary with the 3mm Allen wrench, and loosen the Locking Nut for Deceleration Slope Position with the 10mm closed-end, offset wrench.

b. Turn the Adjustment Stud IN to move the deceleration slope upward or turn it OUT to move the deceleration slope downward.

c. Once the desired deceleration is acquired, hold the Adjustment Stud stationary and tighten the Locking Nut.

Note

If you do not want or need the deceleration slope feature of the VD20-05 relief valves, then it can be disabled. By doing this, however, the VD20-05 will only function at two distinct pressures - The "High" Setting and the "Low" Setting. To disable the deceleration slope, do the following:

1. Hold the Adjustment Stud for Deceleration Slope Position stationary with the 3mm Allen wrench, and loosen the Locking Nut for Deceleration Slope Position with the 10mm closed-end, offset wrench.

2. Turn the Adjustment Stud IN fully until it can no longer be turned in.

3. Hold the Adjustment Stud stationary and tighten the Locking Nut.

Adjustment Procedure for the Deceleration Slope Position on the VD20-05:


Priority Swing Motor Torque Curve and Max Torque Adjustment ProcedureSet Up


• 10mm Wrench

• 3mm Allen Wrench

• 0-7000 psi pressure gauge or transducer


WARNING

If performing this procedure on a vehicle, care must be taken. The pump will be put on stroke during this procedure, hence all personnel should be removed from the area of the machine. “IS” Port

Torque-Curve PositionAdjustment Valve

Locking Nut

AdjustmentStud

“MST” Port

Gauge Port “Ma”Workport “A”

Port “X”

Locking Nut

Adjustment Screwfor Maximum Torque

XY


Priority Swing Motor Torque Curve and Max Torque Adjustment ProcedureAdjustment Procedure

IMPORTANT: Specified pressure values for the following steps are different for each HMF Priority Swing Motor execution number. These values must be obtained from Eaton Engineering department using the unit’s Serial Number prior to any adjustment.

1. Install the 0-7000 psi pressure gauge into the gauge port “Ma” to measure the pressure at Work port “A”.

2. Install the 0-300 psi pressure gauge into port “MST”.

3. Lock the function that the motor actuates as to prevent the motor from rotating. This will make the measurement of the torque curve position easier.

4. Back out Max Torque Adjustment TWO TURNS.

5. Actuate the motor so Port “Ma” is pressurized.

6. While monitoring the pressure at port “MST”, adjust the “Max Torque Adjustment” until the previously specified value is reached.

7. While monitoring the pressure at port “Ma”, adjust the “Torque-Curve Position Adjustment” until the previously specified value is reached.

8. Lock the “Torque-Curve Position Adjustment” locking nut.

Adjustment procedure for the Torque Curve Position:

pilot pressure

wor

kpor

t pre

ssur

e

Motor Torque Curve

Maximum Torque Pressure

The position of the torque curve can be moved upward ordownward, as illustrated here. Only the position of the torquecurve can be changed, NOT the slope of the torque curve.

Note

The torque curve feature on this motor provides the operator with a feel of smooth acceleration, and it optimizes operational efficiency by preventing oil from passing over the cross-over relief valves. The position of the torque curve has no impact on the deceleration of the motor, only on the acceleration.


Priority Swing Motor Torque Curve and Max Torque Adjustment ProcedureAdjustment Procedure

IMPORTANT: In order to successfully measure and adjust the maximum torque setting on the HMF Priority Swing Motor, the “high setting” cracking pressure on the two dual-stage cross-over relief valves must be set at or higher than the desired maximum torque setting for the motor. This adjustment to the dual-stage cross-over relief valve must be done prior to using this Service Bulletin.

1. Lock the function that the motor actuates as to prevent the motor from rotating

2. Actuate the motor so port “Ma” is pressurized.

3. While monitoring the pressure at port “Ma”, adjust the “Max Torque Adjustment” until the previously specified Maximum Torque value is reached.

4. Lock the “Max. Torque Adjustment” locking nut.

Adjustment procedure for the Maximum Torque Value:

pilot pressure

wor

kpo r

t pre

ssur

e

Motor Torque Curve

Maximum Torque Pressure

The Maximum Torque Pressure can beincreased or decreased as illustrated above

by following the instructions in this Service Bulletin


Priority Swing Motor Flow Stop Adjustment ProcedureSet Up & Adjustment Procedure


• 17mm wrench (HMF55 ONLY)

• 5mm Allen wrench (HMF55 ONLY)

• 19mm wrench (HMF75 and HMF105 ONLY)

• 6mm Allen wrench (HMF75 and HMF105 ONLY)

WARNING


Note

This procedure is valid for all sizes of the HMF Priority Swing Motors.

Note


Adjustment Procedure for the Motor Flow Stops:

1. Start the prime mover and set it to operating speed.

2. Fully actuate Work-port "A" by supplying full pilot pressure into Port "X".

3. To adjust the flow setting for Work-port "A":

a. Use the illustration above to confirm you are adjusting the Work-port "A" Flow Stop.

b. While holding the "adjustment stud" stationary, loosen the "seal nut".

c. Turn the "adjustment stud" IN to decrease the flow setting or OUT to increase the flow setting.

WARNING

Care should be taken to avoid completely removing the "adjustment stud" from the valve end cap. There are no mechanical limits to prevent the "adjustment stud" from being completely removed.

Care should be taken to avoid completely removing the "adjustment stud" from the "seal nut", because it is very difficult to reinstall it without a leak being initiated in the "seal nut". Typically, a new "seal nut" must be used if the two pieces are separated.

d. Once the desired setting is acquired, hold the "adjustment stud" stationary and tighten the "seal nut". The proper torque for the "seal nut" is:

• [For HMF55]……………………….29 N-m (21 ft-lb)

• [For HMF75 and HMF105]…..60 N-m (44 ft-lb)

4. Repeat steps #1 through #3 for the flow setting for Work-port "B".


Procedure to Adjust Single Setting Cross-Over Relief Valves on HMF MotorSet Up & Procedure

IMPORTANT: All supplemental relief valves used in the same circuit as the VD20-04 Single-Setting Relief Valves must be set higher than the desired setting for the VD20-04 relief valves. This must be done prior to performing the steps in this Service Bulletin.

1. Install the pressure gauge or transducer to measure the pressure at Work-port "A". The function that the HMF motor actuates must be locked as to prevent the HMF motor from rotating. This will force oil to pass over the relief valve once oil is supplied to the HMF motor.

2. Supply flow to Work-port "A". Only supply the maximum flow that the motor will receive during normal operation.

IMPORTANT: When pushing oil past the relief valve as described in step #2, the hydraulic oil and relief valve will heat up rapidly. Therefore, limit the timing in step #2 to 30 seconds or less. You should monitor the temperature of the hydraulic oil and HMF motor to ensure that they do NOT exceed 194°F (90°C). If the temperature of either reaches this maximum limit, stop all testing until the temperature cools off.

3. While supplying flow to Work-port "A", read the pressure on the gauge - This is the setting for the Work-port "A" Relief Valve.

4. To adjust the Work-port "A" Relief Valve pressure setting:

a. Refer to the illustration above to make sure you are working on the correct relief valve.

b. Hold the Adjustment Stud stationary with the 5mm Allen wrench, and loosen the Seal Nut with the 17mm wrench.

c. Turn the Adjustment Stud IN to increase the relief valve pressure setting or OUT to decrease the relief valve pressure setting.

d. Once the desired pressure setting has been acquired, hold the Adjustment Stud stationary and tighten the Seal Nut. The proper torque for the Seal Nut is 60 N-m (44 ft-lb).

5. Repeat steps #1 through #4 for Work-port "B".

Procedure to Adjust Single Setting Cross-Over Relief Valves on HMF Motor


• 5mm Allen wrench

• 17mm wrench



Procedure to Adjust the VD20-03 Dual-Stage Relief ValvesProcedure

1. Supply 80 psi to 435 psi into the pilot port at the end of the relief valve. This will shift the relief valve to the high-pressure setting.

2. Actuate the function and record the motor workport pressure (Note: Motor must be loaded enough to open the relief valve). This is the high-pressure setting on the VD20-03 relief valve. To adjust:

a. Remove the relief valve from the motor.

b. Disassemble the relief valve to gain access to “SHIMS PSCH 1”:

• remove the “End Cap”

• remove the “Plunger”

• remove “SPRING DF 1”

c. Add shims to increase the relief valve setting or remove to decrease.

(a) (HINT: 0.1mm shim = 340 psi change)

• shim part number 9289003019 = 0.25mm

• shim part number 9289003017 = 0.10mm

d. Reassemble the relief valve:

• reinstall the “Plunger” making sure to capture all springs and shims

• reinstall the “End Cap” and torque it to 59 ft-lb, making sure that the o-ring is properly positioned

• reinstall the relief valve into the motor and torque it to 59 ft-lb

3. Repeat steps #1 and #2 until the desired high-pressure setting is acquired.

High Pressure Adjustment Procedure

Note

It is important to note that you must adjust the high-pressure setting on the relief valve before adjusting the low-pressure setting.

Adjusting the high-pressure setting after the low-pressure setting actually changes the low-pressure setting, hence you must adjust the low-pressure setting again.


1. Make sure that the pressure in the relief valve pilot port is less than 80 psi. It is recommended that there be no pressure in this pilot port.

2. Actuate the function and record the motor workport pressure (Note: Motor must be loaded enough to open the relief valve). This is the low-pressure setting on the VD20-03 relief valve. To adjust:

a. Use the special tool to loosen the jam nut on the “SCREW”.

b. Turn the “SCREW” in to increase the low-pressure setting or out to decrease it.

c. If you cannot acquire the desired setting, you may have to add/remove “SHIMS PSCH 2”.

• HINT: 0.1mm = 6.5 psi

(1) shim part number 9289003201 = 0.5mm

(2) shim part number 9289003197 = 0.1mm

• Follow the instructions in step #2 on page 13 to gain access to “SHIMS PSCH 2”.

• Once the desired low-pressure setting is acquired, tighten the jam nut.

Low Pressure Adjustment Procedure

Note

It is important to note that you must adjust the high-pressure setting on the relief valve before adjusting the low-pressure setting.

Adjusting the high-pressure setting after the low-pressure setting actually changes the low-pressure setting, hence you must adjust the low-pressure setting again.

Procedure to Adjust the VD20-03 Dual-Stage Relief ValvesProcedure


EatonHydraulics Group USA14615 Lone Oak RoadEden Prairie, MN 55344USATel: 952-937-9800Fax: 952-294-7722www.eaton.com/hydraulics

EatonHydraulics Group EuropeRoute de la Longeraie 71110 MorgesSwitzerlandTel: +41 (0) 21 811 4600Fax: +41 (0) 21 811 4601

Eaton Hydraulics Group Asia PacificEaton BuildingNo.7 Lane 280 Linhong Road Changning District, Shanghai200335 ChinaTel: (+86 21) 5200 0099Fax: (+86 21) 2230 72400

© 2012 Eaton CorporationAll Rights Reserved Printed in USADocument No. E-MOPI-TS010-EJuly 2012

Documents

Service Manual - Eatonpub/@eaton/@hyd/... · 4 EATON Duraforce HMF Service Manual E-MOPI-TS010-E July 2012 Priority Swing Motor Regulation Begin Adjustment Procedure Adjustment Procedure