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Manufacturer
Model
Models Covered
Stryker 6090 EZ-PRO and 6500 Power-PRO XT ambulance cots only when the exact model, serial range, configuration, and manual applicability are confirmed. The reviewed 6090 document applies to serial range 980739011 through 991139419. The reviewed 6500 document applies to serial range 100441101 through 120741198. Other 6090 or 6500 serial ranges may have different controls, battery systems, fasteners, accessories, intervals, or procedures.
Manual Reference
Stryker 6090 EZ-PRO Operations/Maintenance Manual 6090-090-011 Rev D and Stryker 6500 Power-PRO XT Operations/Maintenance Manual 6500-509-001 Rev B. Use the current serial-specific Stryker technical-document index when either reviewed range does not match the unit.
Manufacturer Recommendation / AEM Status
6090: clean and disinfect after each use. The OEM inspection interval is based on monthly call volume: every 6 months for 1-25 calls per month, every 3 months for 26-200 calls per month, and monthly for 201 or more calls per month.
6500: perform preventive maintenance at least annually and more often as usage requires. Rev B assigns tasks at 1 month or 2 operating hours, 3 months or 6 hours, 6 months or 12 hours, and 12 months or 24 hours, whichever occurs first. Use the cot's hour meter and the exact schedule table; do not replace those staged checks with only an annual inspection.
Keep maintenance records. A different interval or omitted activity requires the facility's approved AEM process, risk assessment, service history, and applicable regulatory review.
What This PM Procedure Covers
- Identity, serial applicability, use/call volume, operating hours, configuration, and service history
- Cleaning, frame, litter, welds, fasteners, labels, mattress, restraints, head section, accessories, and oxygen holder
- Wheels, wheel locks, loading wheels, safety bar, height positions, undercarriage/X-frame, and vehicle fastener interface
- 6090 mechanical locks, release handles, backrest, siderails, foot rest, and breakaway head section
- 6500 battery, controls, switches, cables, connectors, hydraulic cylinder, reservoir, hoses, manual backup release, and powered lift/lower functions
- Interval-specific findings, corrective action, final function, disposition, and CMMS documentation
Required Tools and Equipment
- Current Stryker operation/maintenance manual and PM schedule for the exact model and serial range
- Basic inspection tools, torque tools, and current Stryker service specifications when adjustment is authorized
- Approved cleaning/disinfection supplies, soft lint-free cloths, PPE, and debris-removal supplies
- Verified compatible ambulance cot fastener or approved test fixture for loading-interface checks
- Calibrated test load appropriate to each manual-directed loaded check, with enough trained personnel and lifting aids to handle it safely
- For 6500: charged approved battery, compatible charger/battery test equipment, hour-meter access, and Stryker-approved hydraulic/service supplies when authorized
- Approved restraint, mattress, accessory, and replacement parts for the exact configuration
Step-by-Step PM Procedure
1. Identify the Cot and Applicable Schedule
Action: Record asset tag, model 6090 or 6500, full serial number, department, installed options, battery type if applicable, call volume, hour-meter reading, last PM, repairs, and the manual number/revision that covers the serial range. Determine every interval currently due.
Expected outcome: The cot and its exact schedule are positively identified. Stop if manual or serial applicability cannot be established.
2. Review History and Establish a Safe Work Area
Action: Review collision, drop, loading, height-lock, unintended lowering, hydraulic, battery, control, restraint, wheel, or fastener complaints. Remove the cot from patient use, remove equipment and oxygen cylinders, and use enough trained personnel for every loaded or elevated test.
Expected outcome: Known risks are documented and the cot can be inspected without a patient, unsecured load, pinch, crush, or lifting hazard.
3. Clean, Disinfect, and Dry
Action: Clean according to the applicable Stryker manual and facility policy. For the 6090, hand wash surfaces with warm water and mild detergent, dry thoroughly, and clean hook-and-loop material after each use. Do not steam clean, pressure wash, hose off, ultrasonically clean, or leave corrosive residue. Follow the 6500 manual for its exact materials and battery/electronic areas.
Expected outcome: Cot is visibly clean and dry with no residue, trapped moisture, or fluid intrusion.
4. Inspect Frame, Litter, Welds, Hardware, and Labels
Action: Inspect the cot frame, litter, X-frame/undercarriage, tubing, sheet metal, welds, pivots, fasteners, covers, guards, grips, warning labels, safety labels, and serial label. Look for bending, cracking, corrosion, looseness, modification, sharp edges, or missing parts.
Expected outcome: Structure is straight and complete, welds are intact, fasteners are secure, and all required labels are present and legible.
5. Inspect Mattress and Restraints
Action: Inspect mattress cover, seams, patient surface, restraint straps, buckles, clips, and anchor points for rips, cracks, contamination, wear, fraying, incorrect routing, or failed engagement. Cycle every restraint.
Expected outcome: Mattress remains cleanable and intact; restraints are correctly installed, secure, and functional.
6. Inspect Wheels, Loading Wheels, and Wheel Locks
Action: Remove debris. Inspect wheel tread, bearings, axles, swivel assemblies, loading wheels, mounts, and optional wheel locks. Roll and swivel the unloaded cot in all directions; engage and release each fitted lock and adjust only by the approved procedure.
Expected outcome: Wheels are secure, roll and swivel smoothly, loading wheels are serviceable, and locks hold and release correctly.
7. Test Head Section, Siderails, Backrest, and Accessories
Action: Extend, retract, and lock the head section; inspect grip bar and safety bar. Cycle siderails and latches, backrest, foot rest, breakaway head section, IV pole, oxygen-bottle holder, restraint extender, kickstand, head extension, and every other installed accessory. Apply only manual-listed lubrication at the scheduled point.
Expected outcome: Each installed component is intact, secure, moves smoothly, locks positively, and returns to its transport position.
8. Verify 6090 Height Locks and Undercarriage
Action: On a 6090, inspect the head-end, foot-end, and auxiliary release handles/cables. With enough trained operators and no patient, cycle the cot through every approved height position, confirm the height-positioning latch engages securely, verify the undercarriage folds/unfolds properly, and ensure release handles return without binding.
Expected outcome: The cot is secure in every height position, the undercarriage operates correctly, and no release remains partly engaged.
9. Verify Vehicle Safety Bar and Cot-Fastener Interface
Action: Inspect and functionally verify the safety bar, loading interface, and compatible vehicle cot fastener using the exact manual and approved fixture/vehicle. Confirm the cot is captured, retained, and released normally. Do not perform a loading test with a patient.
Expected outcome: Safety bar and fastener interface are undamaged, compatible, securely retain the cot, and release only as intended.
10. Inspect the 6500 Battery and Electrical Controls
Action: On a 6500, inspect the approved battery, contacts, latch, housing, charger interface, control switches, indicator/display, wiring harnesses, cables, connectors, routing, and strain protection. Look for swelling, leakage, contamination, heat damage, pinching, exposed conductors, loose connectors, hanging wires, or unauthorized parts. Verify control switches return to off/neutral when released.
Expected outcome: Battery and control components are clean, secure, undamaged, correctly routed, and responsive with no uncontrolled command.
11. Inspect the 6500 Hydraulic System
Action: Inspect cylinder, motor mount, manifold, reservoir, rods, seals, hoses, fittings, and connections for damage, kinks, abrasion, looseness, or leakage. Never use bare hands to search for a pressurized leak. Clean the cylinder rod only as directed by the manual. Do not tip and actuate the cot, and do not lubricate X-frame bearings.
Expected outcome: Hydraulic parts and fasteners are secure, hoses are correctly routed, and no leak, damage, or contamination exists.
12. Test 6500 Powered Lift, Lower, and Backup Release
Action: With a charged approved battery, enough trained operators, and the cot controlled at both ends, cycle powered raise/lower through the safe range. Verify smooth X-frame motion, normal speed, stopping when controls are released, jog/high-speed functions when fitted, and consistent indicator/display behavior. Test the manual backup release, handle return/stowage, and the OEM loaded safety check using the exact specified load and setup.
Expected outcome: Powered and manual functions are smooth and controlled, the cot holds position, the backup release behaves exactly as specified, and the cot does not drop unexpectedly.
13. Complete Every Due 6500 Interval Item
Action: Use the Rev B schedule table to initial each task due at 1 month/2 hours, 3 months/6 hours, 6 months/12 hours, and 12 months/24 hours, whichever comes first. Include settings, cylinder, hydraulics, electronic controls, switches, cables/wires, manual backup handle, litter, mattress, restraints, base, wheels, X-frame, head section, and accessories. Do not infer an interval from this summary when the exact table is available.
Expected outcome: No due task is skipped, and calendar date plus operating hours are both documented.
14. Correct Defects Only Under Approved Service Instructions
Action: Quarantine any unsafe cot. Qualified personnel may adjust or replace parts only under the current serial-specific Stryker procedure using approved parts, torque values, lubricants, and post-repair tests. Escalate structural, weld, hydraulic, control, battery, or fastener-interface defects to authorized service when required.
Expected outcome: Repairs do not introduce an unapproved configuration, and every affected safety/function test is repeated.
15. Perform Final Operational Verification
Action: Recheck wheels/locks, restraints, siderails, backrest, accessories, head section, height positions, undercarriage, safety bar, fastener interface, and all model-specific release mechanisms. On a 6500, repeat powered motion, stop/neutral response, manual backup release, battery retention, and leak inspection.
Expected outcome: All safeguards are restored and the complete cot operates predictably without binding, drift, leakage, abnormal noise, or unintended movement.
16. Restore and Document
Action: Clean the cot, install a verified charged battery where applicable, restore accessories, record all readings/checks, meter hours, call volume, manual revision, parts, corrective actions, technician, date, and disposition. Apply the PM label and return to service only after every failure is resolved.
Expected outcome: Cot is complete, clean, traceable, and either safely returned to service or clearly removed from use.
Electrical Safety Testing
The reviewed 6090 is mechanical, and the reviewed 6500 uses a removable battery-powered hydraulic system rather than direct AC mains power on the cot. Routine AC leakage-current and protective-earth tests are therefore not applicable to these reviewed cot configurations. Document N/A - mechanical/removable-battery cot. Test a separate charger or other powered accessory under its own model-specific procedure and facility requirements; do not record that accessory test as an electrical-safety pass for the cot.
Pass / Fail Criteria
Pass
- Exact model, serial range, configuration, manual, call volume, operating hours, and due intervals are documented
- Frame, litter, X-frame, undercarriage, welds, fasteners, labels, mattress, restraints, head section, siderails, backrest, and accessories pass
- Wheels/loading wheels roll correctly; locks, height positions, releases, safety bar, and compatible cot fastener retain and release correctly
- 6090 mechanical functions pass its complete usage-based checklist
- 6500 battery, switches, wiring, controls, hydraulics, powered motion, stop/neutral response, manual backup release, and every due scheduled item pass
- No leak, structural defect, unintended lowering, abnormal movement, unresolved complaint, or overdue task remains
Remove From Service
- Manual/serial applicability, fastener compatibility, service interval, or required loaded-test setup cannot be established
- A cracked weld, bent structure, loose critical fastener, damaged restraint, failed latch/lock, unsafe wheel, unreadable safety label, or compromised mattress exists
- The cot fails to hold a height position, folds or releases unexpectedly, does not engage the safety bar/fastener, or cannot be safely loaded
- A 6500 has a leaking/damaged hydraulic component, unsafe battery, damaged cable/control, switch that does not return to neutral, failed backup release, drift, or unintended motion
- A due OEM task, required repair, or post-repair verification is incomplete
Copy/Paste CMMS Work Order Procedure
Use the current model-, serial-, and configuration-specific Stryker documentation. The 6090 and 6500 do not share one identical schedule or mechanism. Never test with a patient, work beneath an unsupported cot, use bare hands to find a hydraulic leak, bypass a safety device, lubricate 6500 X-frame bearings, or return a cot with an unresolved retention, lowering, structural, restraint, hydraulic, battery, or control defect.