Converting Pulsation Damper: Notes

Work Procedure: 

1. Clamp the hydraulic pump in a support clamp.
2. Install nut (M14 x 1.5) -3-  on screw (M14 x 1.5) -4-  .

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   Auxiliary tool (screw and nut, M14 x 1.5)

3. Screw in screw -4-  with nut as far as possible into the pulsation damper by hand.

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   Installing auxiliary tool

4. Tighten nut -3-  against the pulsation damper -1-  and counter at the screw -4-  using a torque wrench to tighten the screw on the pulsation damper.

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   Tightening auxiliary tool

   Information 

   If the screw - not the pulsation damper - loosens during this process, repeat Steps 3 to 5.

5. Loosen pulsation damper -1-  at the screw -4-  using a torque wrench.

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   Loosening pulsation damper

6. Remove pulsation damper from the hydraulic pump.

   To do this, turn the pulsation damper -1-  in -direction of arrow A-  and remove it in -direction of arrow B-  .

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   Removing pulsation damper

7. Remove the old hydraulic pump from the support clamp and dispose of it in accordance with regulations.
8. Clamp the new hydraulic pump in the support clamp. Make sure not to damage it.
9. Remove sealing ring from the pulsation damper and replace it with a new one (supplied with the hydraulic pump).
10. Screw pulsation damper into the new hydraulic pump by hand.

    To do this, position the pulsation damper -1-  and turn it in -direction of arrow C-  until it is touching the hydraulic pump in -direction of arrow D-  .

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    Installing pulsation damper

11. Secure the pulsation damper -1-  to the new hydraulic pump using the screw -4-  and a torque wrench and tighten to > Tightening torque 41 (30 ftlb.) Nm + 4 (3 ftlb.) Nm  .

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    Securing pulsation damper

12. Mark the pulsation damper on the hydraulic pump using a felt-tipped pen > Marking pulsation damper  .

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    Marking pulsation damper

13. Loosen the nut -Yellow-  by countering with the torque wrench to prevent the pulsation damper from loosening.

    After loosening the nut, check the marking on the pulsation damper and hydraulic pump.

    • If the marking on the pulsation damper still matches the marking on the hydraulic pump and the pulsation damper has not loosened when loosening the auxiliary tool, continue with See Step 14.
    • If the two markings no longer match and the pulsation damper has loosened when loosening the auxiliary tool, the nut must be tightened again as described in See  Step  4. Then repeat See  Steps  11 to  13.

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    Loosening auxiliary tool

14. Unscrew screw -4-  from the pulsation damper.

    End of action required; the new hydraulic pump can be installed. 

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    Removing auxiliary tool