MEC 4555SE For Sale

The MEC 4555SE is MEC’s tallest slab scissor lift, with a 45 ft platform height and 51 ft working height. Current AC models carry 750 lb on a 104 x 44 in deck that extends to 139 in, so crews can work at ceiling height in warehouses, distribution centers, arenas and other tall buildings with smooth floors. At 55 in wide and about 7,760 lb, it is larger and heavier than the 47 in MEC 4046SE, and it competes with the Genie GS-4655 and Skyjack SJ5545.

• Full height indoors: 45 ft platform and 51 ft working height, and it can drive at full height indoors without outriggers.
• Large deck: 104 x 44 in, plus a 35 in roll-out extension rated for 250 lb.
• AC electric drive: AC drive motors with fully proportional lift and drive controls on current models.
• Fold-down guardrails: folding the rails drops the stowed height from 102 in to 79 in for doorways and transport.
• Sealed AGM batteries: four 12V batteries (24V, 300Ah) that need no watering, with an automatic 110 to 230V charger.
• Easy service: slide-out component tray, onboard diagnostics, lube-free scissor bearings and MEC’s Leak Containment System.
• Safety systems: active pothole protection, a multi-axis tilt sensor, descent and motion alarms, emergency stops at both controls and automatic parking brakes.

MEC Scissor Lifts: Models, Specs and Prices

Specs are from MEC’s current 4555SEac spec sheet and SE-series operator’s manual (ANSI A92.20). MEC’s product page says the 4555SE can be driven outdoors to 35 ft, but the spec sheet and manual say 30 ft. Early DC units are rated for 500 lb and weigh about 7,190 lb, so check the serial plate and decals on any used unit.

• Early DC 4555SE (about 2017 to 2019): DC direct electric drive, 500 lb capacity and about 7,190 lb.
• 4555SEac (current): AC electric drive, 750 lb capacity and 7,760 lb. Listings don’t always say which version a unit is.
• 4555+ (2026): MEC’s new PLUS version with energy-recapturing AC motors, 800 lb capacity, a 300 lb extension deck, 3.8 mph drive speed, 30% gradeability and faster lifting (about 67 seconds). Few have reached the used market yet.

• Serial plate and decals: confirm the year, whether it is a DC or AC model, and the capacity (500 or 750 lb) and outdoor ratings.
• Inspection records: ask for the last annual inspection and repair history.
• Batteries and charger: check the age of all four batteries, look for corrosion, and run the lift through a full charge.
• Fault codes: check the controller display for stored codes before you buy.
• Pothole guards: raise the platform and make sure both guards deploy fully.
• Safety systems: test the tilt alarm, emergency stops, emergency lowering and descent alarm.
• Scissor stack: look for bent arms, cracked welds and worn pins, and watch for sway at full height.
• Hydraulics: check the lift cylinder and hoses for leaks and platform drift.
• Deck, rails and gate: the extension should slide and lock, the rails should fold and pin securely, and the gate should close on its own.
• Floor loads: at 7,760 lb with up to 2,400 lb per wheel, confirm your floors and elevators can carry it.

Document the unit’s condition with the free FleetNow equipment inspection app. Our guides to buying a used scissor lift and preventing scissor lift problems cover more.

Browse all used MEC scissor lifts, MEC slab scissor lifts or all MEC equipment, or compare all used slab scissor lifts. Similar models include the MEC 4046SE, Genie GS-4655 and, for a slightly lower 47 in lift, the Skyjack SJ4740. Read more in our MEC 4046SE guide.

Can’t find the right unit? Contact FleetNow or call 1-216-973-5124. Selling a 4555SE? List your equipment on FleetNow.

The 4555SE shows fault codes on its controller display. Start with these checks, and use the MEC SE-series operator’s and service manuals for your serial number. Leave repairs to a qualified technician.

1. Platform Will Not Lower (Power Failure):

• Use the emergency lowering knob near the base control panel.
• The descent alarm does not sound during emergency lowering, so make sure the area below is clear.

2. Tilt Alarm or LL Code:

• LL means the lift is out of level. Lifting stops and drive is locked out.
• Lower the platform, move to level ground and reset the emergency stop.

3. Pothole Guard Fault (Code 18):

• A pothole guard did not fully deploy. Check for debris under the guards and inspect the limit switches.
• Drive and steering are blocked until the guards deploy.

4. Will Not Lift or Lifts Slowly:

• Check that the load is within 750 lb (500 lb on early DC units) and the extension deck within 250 lb.
• Check battery charge and hydraulic fluid level, and look for leaks at the lift cylinder.

5. Battery and Charger Problems:

• Clean and tighten the battery connections, charge fully and load-test all four batteries.
• Replace batteries as a set, and use a properly rated extension cord for the charger.

6. Working Under a Raised Platform:

• The 4555SE has two scissor maintenance locks. Set both before any work under a raised platform.
• When towing or winching, stay under 2.5 mph.