ProcedureGantry — Slip ring & brushesAdjust

Align the slip ring brushes with the alignment jig

Center each large-current slip ring (LCSR) brush's contact point on the ring — temporarily loosen its mounting bolts, seat the dedicated alignment jig between slipring channels 2 and 3, then retighten the four bolts to 4.4 N·m before withdrawing the jig, repeating the sequence for both brush assemblies (A and B) on each side of the gantry — per section 8.4.2 ("Brush alignment") of the Gantry Mechanism volume.

Applies to
Aquilion 16 (TSX-101A)
Personnel
Adjustment/calibration — temporarily loosening a brush assembly's mounting bolts, seating a dedicated alignment jig into the brush-assembly groove against the slipring between channels 2 and 3, retightening the four mounting bolts to 4.4 N·m with the jig still in place, then withdrawing the jig and visually confirming the brush is not displaced from the ring; judging brush wear against the acceptable/unacceptable alignment criteria and trimming an unevenly worn brush with a cutter before aligning it. No meters or electrical test equipment are called out in this section. (Skill assessment derived from the procedure's content — not an OEM-stated skill level.)
Steps
10 steps
Source
2D201-061E*H p.107-111

Tools & parts

ItemPart numberQty
Alignment jign/a in source — the sibling brush-replacement procedure (§7.4) cites this same jig as BSX77-4283, see [Replace the large-current slip ring brushes](toshiba-ct-aquilion16-gantry-replace-lcsr-brushes.md)1
Cuttern/a in source1
Standard tools (screws / bolt driver)n/a in source1 set

Safety

CAUTION

Hazard: A brush that has worn unevenly can develop a step-like projection where it has lost contact with the ring over the center surface

Consequence: Short circuit

Avoidance: If such a brush is found, be sure to remove the projection using a cutter so the brush surface is even before performing brush alignment

NOTICE

Hazard: Using sandpaper to correct an unevenly worn brush — grains from the sandpaper can enter the brushes. Source labels this call-out CAUTION; reclassified NOTICE here because the stated consequence (abnormal brush wear) is an equipment/procedure-quality outcome, not personal injury

Consequence: Abnormal wear of the brushes

Avoidance: Never use sandpaper to correct unevenness of a worn brush

Full step-by-step for Align the slip ring brushes with the alignment jig

All 10 steps are documented in the FSELIB Aquilion 16 (TSX-101A) service manual — re-authored, web-first, with the real figures from the source.

Open the full procedure

Related Gantry — Slip ring & brushes guides

Clean the large-current slipring and brush assemblies21 stepsRepair a damaged large-current slip ring (emergency)11 stepsReplace the large-current slip ring brushes14 stepsRun the console malfunction-diagnosis program (hwtest)0 stepsRun the independent MHR PWB test (diagnostics) from the RTM terminal4 stepsRemove the host PC unit (PX74-07959 GR-1/GR-2)4 steps
View all Aquilion 16 (TSX-101A) guides

Source: 2D201-061E*H p.107-111. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.