ProcedureGantryReplacementReplace

Remove and refit the gantry Mylar ring

Remove the Mylar ring (the flexible sheet that seals the joint between the gantry front cover and the dome cover) and refit it with a verified, gap-free fit. You typically do this to gain access for other gantry cover/front-cover work (see Related — the X-ray tube replacement procedure removes this ring as an access step), or to reseat/replace a ring that has come loose or is leaking.

Applies to
Activion16 (TSX-031A). No model/revision restriction is stated in source; applies to the standard gantry front-cover-to-dome-cover Mylar seal.
Personnel
1 technician · Field service engineer (CT gantry, basic mechanical service)
Steps
6 steps
Source
2D201-112EN*D §1.3.1 (pp.45–48) — Procedures for removing/mounting the Mylar ring

Tools & parts

ItemPart numberQty
Mylar ring / Mylar sheet assembly (with rubber parts)—1
M4 screws, joint fastening—2

Safety

CAUTION

Hazard: Mylar ring not in full contact with the dome cover (gap left at the seal)

Consequence: Blood, contrast medium, or other fluids can leak through the gap into the system, causing equipment damage or degraded image quality

Avoidance: Mount the Mylar ring securely; verify contact around the full circumference (fit-check steps) before returning the system to service

Full step-by-step for Remove and refit the gantry Mylar ring

All 6 steps are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with the real figures from the source.

Open the full procedure

Related Gantry guides

Adjust the gantry positioning projectors (side, slant, and median)10 stepsAdjust the gantry rotation belt tension16 stepsAdjust the gantry rotation speed (servo amplifier, VR1)3 stepsAdjust the gantry servo-amplifier offset23 stepsAdjust the gantry tilt-stop angles (encoder calibration)5 stepsCheck the gantry rotation speed7 steps
View all Activion16 (TSX-031A) guides

Source: 2D201-112EN*D §1.3.1 (pp.45–48) — Procedures for removing/mounting the Mylar ring. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.