Eaton DuraForce HMR Series, Руководство пользователя

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19
EATON
Duraforce HMR Conversion Procedures Manual E-MOPI-TM005-E July 2012
Procedure to Adjust
Crossover Relief Valves
Set Up and Procedure
Procedure to Adjust Crossover Relief Valves
Important
All supplemental relief valves used in the same circuit as
the Single-Setting Relief Valves must be set higher than the
desired setting for the relief valves. This must be done prior
to performing the steps in this Service Bulletin.
Install the pressure gauge or transducer to measure
the pressure at Workport "A".
The function that the HMR motor actuates must
be locked as to prevent the HMR- 02 motor from
rotating. This will force oil to pass over the relief valve
once oil is supplied to the HMR motor.
Supply flow to Workport "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
#3, the hydraulic oil and relief valve will heat up rapidly.
Therefore, limit the timing in step #3 to 30 seconds or less.
You should monitor the temperature of the hydraulic oil and
HMR 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.
While supplying flow to Workport “A”, read the
pressure on the gauge - This is the setting for the
Workport "A" Relief Valve.
To adjust the Workport "A" Relief Valve pressure
setting:
a. Refer to the illustrations on page 1 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).
Then repeat steps #1 through #5 for Workport "B".
1
2
3
4
5
6
Workport “B”
Workport “B”
Workport “A”
Workport “A”
Workport “B”
Relief Valve
VD20-04 Single Setting
Relief Valves
VD20-04 Single Setting
Relief Valves
Workport “A”
Relief Valve
Workport “B”
Relief Valve
Workport “A”
Relief Valve
Adjustment Stud
Adjustment Stud
Seal Nut
Seal Nut
Workport “B”
Workport “B”
Workport “A”
Workport “A”
Workport “B”
Relief Valve
VD20-04 Single Setting
Relief Valves
VD20-04 Single Setting
Relief Valves
Workport “A”
Relief Valve
Workport “B”
Relief Valve
Workport “A”
Relief Valve
Adjustment Stud
Adjustment Stud
Seal Nut
Seal Nut