South Florida
Common JLG 400S Problems We Repair
Owners of the JLG 400S most often call us about fault codes, platform won't raise or lower, drifting booms, drive and steer faults, control failures and engine or battery problems. We diagnose the fault on the machine, explain the cause and quote the repair before starting, and carry common JLG wear parts on the truck.
600+
Service Calls Per Year
282
Reoccurring Clients
JLG Diagnostics
Platform, ground control and drive faults on the JLG lift diagnosed with manufacturer software.
JLG Won't Raise or Lower
Hydraulic, electrical and interlock faults that stop the JLG lift from raising or lowering repaired.
JLG Hydraulic Repair
Lift, extension, jib and leveling cylinders, pumps and hoses on the JLG lift repaired.
JLG Drive & Steer Repair
Drive motors, hubs, steer cylinders and controls on the JLG lift repaired.
JLG Control Box Repair
Platform and ground control boxes, joysticks and harnesses on the JLG lift repaired.
JLG Engine Repair
Diesel or gas engines on the JLG lift repaired, including no-starts and power loss.
JLG Battery & Charger
Batteries, chargers and wiring on electric JLG lift units tested and replaced.
JLG Annual Inspection
Annual and frequent inspections on the JLG lift documented to keep it in service.
Lift & Extension Cylinders
Cylinder resealing on the JLG lift.
Hydraulic Pump & Valves
Pump and valve repair.
Drive Motors & Hubs
Drive system repair on the JLG lift.
Platform Controls
Joystick and control box repair.
Ground Controls & ECM
Controller and harness repair.
Engine
Diesel and gas engine repair.
Batteries & Charger
Electric drive battery service.
Turntable & Slew Ring
Rotation system repair on the JLG lift.
Leveling & Safety Systems
Tilt sensor and interlock repair.
CITY
Reach Out?
Need service for your heavy equipment? Our mobile diesel mechanics provide on-site diagnostics, engine repair, hydraulic service, and drivetrain repairs to keep your machines running with minimal downtime.
Yes. Our diesel mechanics provide mobile, on-site heavy equipment repair throughout South Florida. We service equipment directly at job sites to reduce downtime and avoid unnecessary transport.
We repair a wide range of heavy equipment, including excavators, loaders, backhoes, skid steers, dozers, agricultural machinery, and other diesel-powered equipment used in construction and industrial operations.
Response times vary based on location and workload, but our mobile diesel mechanics aim to provide prompt service to diagnose and repair equipment as efficiently as possible.