ProcedureGantry — Slip ring & brushesEmergency

Repair a damaged large-current slip ring (emergency)

Sand out and re-finish a large-current slip ring surface damaged by an obstacle, as an emergency measure when full replacement isn't the immediate option.

Applies to

Aquilion 16 (TSX-101A) — Gantry mechanism, source volume 2D201-061

Personnel

1 technician · Intermediate — direct mechanical rework of the ring surface itself: vacuuming abraded material, disconnecting and removing the brush assembly, progressive dry-sanding of the damaged ring area through two sandpaper grits to a smooth finish, an alcohol clean, then remounting and aligning the brush assemblies with the brush alignment jig (BSX77-4283). No torque value or part number is given in this section beyond the sandpaper grain specification and the alignment jig part number (skill assessment derived from procedure content — not an OEM-stated skill level).

Steps

11 steps

Source

2D201-061E*H p.112-113

Tools & parts

Item	Part number	Qty
Standard tools	n/a in source	1 set
Sandpaper, #1000 grit	n/a in source	1 sheet
Sandpaper, #2000 grit	n/a in source	1 sheet
Rag	n/a in source	—
Cleaner	n/a in source	—
Ethyl alcohol	n/a in source	—
Brush alignment jig	BSX77-4283	1
Grain size (JIS)	Particle diameter at 50% point	Particle diameter at 3% point of cumulative height
#1000	15.5 ±1.0	32 max.
#2000	8.5 ±1.0	21 max.

Safety

DANGER

Hazard: High voltage present in the slip ring and the brushes

Consequence: Electric shock

Avoidance: Turn OFF all the breakers on the distribution board before touching the slip ring or the brushes

NOTICE

Hazard: Mishandling the ring, cover, or brush assemblies while cleaning/repairing them — using sandpaper on brush burrs, forcing the cover against the ring, rough handling of the brushes, abraded material left to fall into the gantry, off-center brush mounting, or a miswired cable

Consequence: Abnormal brush wear (if sandpaper grains enter the brushes), a damaged ring surface, damaged or broken brushes, contamination inside the gantry, or a misaligned/miswired brush assembly

Avoidance: Remove brush burrs with a cutter only — never sandpaper; take care not to force the ring when removing the cover; handle the brushes carefully and trim only their burrs; vacuum/contain abraded material so none falls into the gantry; center the brush assemblies on the ring when mounting; verify the cable is connected correctly

Full step-by-step for Repair a damaged large-current slip ring (emergency)

All 11 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

Align the slip ring brushes with the alignment jig10 steps Clean the large-current slipring and brush assemblies21 steps Replace the large-current slip ring brushes14 steps Run the console malfunction-diagnosis program (hwtest)0 steps Run the independent MHR PWB test (diagnostics) from the RTM terminal4 steps Remove the host PC unit (PX74-07959 GR-1/GR-2)4 steps

View all Aquilion 16 (TSX-101A) guides

Source: 2D201-061E*H p.112-113. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.