• Object ID: 00000018WIA307BF030GYZ
  • Topic ID: id_12374625 Version: 1.4
  • Date: Jul 5, 2019 6:08:29 PM

Main Cradle Latch Mechanism Replacements

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable50 minutes -
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non-Magnetic Service Tool Kit1-

5112581

-
Table 3. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
Cradle Latch Cable (cut to 1500 mm in length)1-

Refer to FRU Manual

-
Cradle Latch Housing1-

Refer to FRU Manual

-

Procedure

  1. Undock the Patient Table and move it out of magnet room.
  2. Remove Upper Bellows and Left Lower Base Side cover. For more information, refer to the Patient Table Upper Bellows and Lower Base Side Cover Removal procedure.
  3. Lower the Table Lock Safety Bar. Lower the Table and verify that all weight is resting on the lock bar.
    Figure 1. Table Lock Safety Bar
  4. Manually slide the cradle forward and prop up. For more information, refer to the Removing Cradle Assembly procedure.
    Figure 2. Propping Up the Cradle
  5. Using an 5/64 Allen wrench, loosen set screw at Down Link Clevis.
    Figure 3. Down Link Clevis
  6. Remove Patient Table Bottom Cover Front.
    Figure 4. Patient Table Bottom Cover Front
  7. Remove four bolts securing cradle latch housing and cradle latch cover.
    Figure 5. Cradle Latch Housing Bolts
  8. Unfasten cable end from Down Link Clevis (see Figure 3).
  9. Pull cable out of Cradle Latch Block on front of Patient Table.
    Figure 6. Interlock Cable and Main Cradle Latch Cable Routing
  10. If the Cradle Latch is being replaced, remove the limit screw at the back of the Cradle Latch Housing. Extract plastic latching mechanism and replace.
  11. Insert new cable through head of Cradle Latch Block so once fully threaded, the swaged end fits into hole in latch pin.
    Figure 7. Installing Main Cradle Latch Cable
  12. Reinstall the Cradle Latch Housing.
  13. Adjust the housing's position so as to minimize the distance between the latch and the latch housing. Cycle the latch several times, to ensure that the latch never sticks in the “down” position.
  14. Route cable through cable casing and insert through cable Down Link Clevis (see Figure 3).
  15. Loop cable twice through hole in Down Link Clevis.
    Figure 8. Cable Path through Down Link Clevis
  16. Tighten set screw (see Figure 3).
  17. Return to magnet room and dock the Patient Table.
  18. Note:

    Wrap the cable around Down Link Clevis twice.

    Adjust cable so that when docked, main latch will be flush with casting. For more information, refer to the Cradle Release Block Adjustment procedure. Secure adjustment by tightening set screw after adjustment is complete (see Figure 8).
  19. Loop the excess cable multiple times to bundle itself. See Figure 9.
    Figure 9. Bundling the Excess Cabling
  20. Replace cradle along with Upper Bellows and Lower Base Side Cover.
  21. Re-dock Patient Table.

Finalization

Verify proper operation of latching interlock.