• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA30EF1E40GYZ
  • Topic ID: id_2019707 Version: 2.15
  • Date: Oct 11, 2021 6:31:29 PM

Installing the hydraulic cylinder

Installs the hydraulic cylinder in a dockable patient table.

Procedure

  1. Apply anti-seize lubricant to the adjustment screw, and attach the adjustment screw, anti-rotation collar, upper bracket, and e-clip to the top of the replacement cylinder.
    1E-clip
    2Upper bracket
    3Adjustment screw
    4Hydraulic cylinder shaft
    5Anti-rotation collar
    6Distance between height adjustment screw nut and top of cylinder shaft
    Note: Make sure to set the distance between the height adjustment screw nut and the top of the cylinder shaft to the same measurement previously observed.
  2. Disconnect the table down valve actuator from the hydraulic cylinder by removing the attachment screw.
  3. Prepare the replacement cylinder for installation by pressing the cylinder to its fully retracted position.
  4. Carefully angle the bottom of the hydraulic cylinder into the base of the table.
  5. Insert the cylinder mounting pin to secure the base of the hydraulic cylinder to the frame of the table and reattach the e-clip.
  6. Reconnect the hydraulic lines to the base of the hydraulic cylinder. To help avoid leaks, use a new hose clamp to secure the low-pressure line.
    Note: To avoid obstruction of down link movement, carefully angle the low-pressure line hose clamp facing inward.
    Figure 1. Low-pressure line hose clamp
    1Hydraulic cylinder
    2Hose clamp
    3Down link
  7. Attach the table down valve actuator to the hydraulic cylinder by inserting and tightening the attachment screw.
    Figure 2. Hydraulic cylinder and attached down valve actuator
    1Screw
    2Table down valve actuator
    3Hydraulic cylinder
  8. Hold the down valve open and exercise the up pump foot pedal to bleed the hydraulic system by shunting air to the hydraulic reservoir.
  9. Align the upper cylinder shaft with the upper bracket screw holes on the underside of the table, then slowly pump up the cylinder until the tables raises into position.
    Note: If available, a second person can assist by pumping the table up while the first person ensures that the top of the cylinder shaft moves into position.
  10. When top of cylinder reaches table top, reattach the upper bracket to the underside of the table, and then secure the anti-rotation collar.
    Figure 3. Anti-rotation collar and upper bracket
    1Anti-rotation collar screw
    2Upper bracket screws

Finalization

To ensure unrestricted table movement and help avoid leaks, verify that all hydraulic lines are routed and secured appropriately, according to Figure 4 and Figure 5.

Figure 4. Hydraulic line routing
Figure 5. Hydraulic line routing (angled view)