Preventive MaintenanceCouch/TablePM

Couch hydraulic leakage, lubrication, tightening, natural-fall, DC power and sensor checks — 2.12-2.19

Run this eight-item block of the patient-couch periodic inspection table — hydraulic-circuit oil-leak check, cylinder-rod lubrication, cable check, tightening check, anchor-bolt check, natural-falling-rate measurement, DC power supply check, and sensor check (items 2.12 through 2.19) — to catch hydraulic and mechanical wear on the couch's lift system before it becomes a "won't hold position" or "won't move" failure.

Applies to

Aquilion 16 (TSX-101A) — periodic patient-couch inspection items 2.12 through 2.19, source volume 2Y201-061 (Check and Maintenance Procedures), subsection 5.2 "Patient couch." These 8 items continue the same periodic couch inspection table as the cable/movement-accuracy/free-operation/interlock/limit checks that precede them (items 2.6-2.11) and lead into the X-ray/HV inspection block that follows (items 3.1 onward) — see Related. The table's own column headers show four checking-period buckets, **3M / 6M / 1Y / 2Y**, but the specific interval mark for each of these 8 items was not preserved by the text extraction of the table (the same limitation noted on the neighboring gantry items) — confirm the checked period against the printed table in source `2Y201-061E*E` p.106-108 before scheduling.

Personnel

1 technician · Basic-to-intermediate — most items (2.12 oil-leak visual check, 2.13 rod lubrication, 2.14 cable visual/operation check, 2.15 tightening check, 2.16 anchor-bolt check, 2.19 sensor visual check) are unaided visual/hand inspections; 2.17 (natural falling rate) and 2.18 (DC power supply) require measuring a value — height loss over time, or a voltage between two named test points — against a printed pass/fail criterion, and 2.19 requires isolating the gantry breaker (NFB1) first. (Skill assessment derived from procedure content — not an OEM-stated skill level.)

Steps

1 step

Source

2Y201-061E*E p.106-108

Tools & parts

Item	Part number	Qty
Lubricant (item 2.13)	Rust Jet (KOHZAI) or Power Green (BALBIS)
Scale, or an adding tape (item 2.17)	n/a in source (no brand/model given)

Safety

DANGER

Hazard: Performing the sensor check (item 2.19) — which requires the couch lower cover removed to reach the SLIDE and HEIGHT sensors — without first isolating the gantry breaker NFB1.

Consequence: Source states this is to ensure safety (no separate injury named for this item).

Avoidance: Turn OFF the gantry breaker NFB1 before performing the sensor check with the couch lower cover removed.

Full step-by-step for Couch hydraulic leakage, lubrication, tightening, natural-fall, DC power and sensor checks — 2.12-2.19

All 1 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 Couch/Table guides

Partially disassemble the patient couch for carrying-in (narrow route)5 steps Reset the overcurrent relay (horizontal and vertical motors)6 steps Fine-adjust the couch position using CT images13 steps Prepare the couch and perform rough positioning with the projector16 steps Secure the couch, install the footswitch, fit covers and set the height indicator18 steps Carry the patient couch in tilted, on a triangular stand (narrow route or small elevator)11 steps

View all Aquilion 16 (TSX-101A) guides

Source: 2Y201-061E*E p.106-108. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.