Bucket Truck & Aerial Device Repair
Mondak Equipment repairs and troubleshoots bucket trucks and vehicle-mounted aerial devices, including insulated and non-insulated equipment.
Repair for Insulated & Non-Insulated Vehicle-Mounted Aerials
When a bucket truck has a problem, the issue may be in the aerial device, or in the truck and hydraulic systems supporting it.
Sometimes the problem is obvious. Other times a boom function is slow, the upper controls quit working, an outrigger will not operate, the unit has an intermittent electrical problem, or the machine simply does not work the way it should.
We work through the hydraulic, mechanical, electrical, and control systems to determine what needs attention.
Brands We Work On
Mondak works on aerial equipment from manufacturers including:
- Altec
- Terex / Hi-Ranger
- Versalift
- Elliott
- Dur-A-Lift
- and others
This includes equipment such as:
- Overcenter aerial devices
- Non-overcenter aerial devices
- Telescopic aerials
- Articulating aerials
- Insulated bucket trucks
- Non-insulated aerial equipment
- Truck-mounted man baskets
If your make or model is not listed, give us the manufacturer, model, and what the equipment is doing.
Aerial Device Repair
Mondak can repair and troubleshoot problems involving:
- Hydraulic cylinders
- Pumps and motors
- Valves and manifolds
- Hydraulic hoses and hard lines
- Boom lift and telescope functions
- Rotation systems
- Platform leveling
- Outriggers and stabilizers
- Rotation bearings
- Pins and bushings
- Bearings and pivot points
- Upper controls
- Lower controls
- Joysticks
- Sensors and switches
- Electrical wiring
- PTO and hydraulic power systems
- Chassis-to-aerial electrical and hydraulic systems
The boom may be where the problem shows up, but the source can be somewhere else on the machine.
Hydraulic System Problems
Bucket trucks rely heavily on hydraulics, and a number of different problems can create the same symptom.
Mondak can work on:
- Hydraulic pumps
- Cylinders
- Hydraulic motors
- Directional valves
- Relief valves
- Manifolds
- Accumulators
- Hoses and fittings
- Hard lines
- Filters
- Reservoirs
- Pressure and flow problems
- Hydraulic overheating
A slow boom does not automatically mean the pump is bad.
Internal leakage, a valve problem, restriction, mechanical binding, or another condition can create similar symptoms.
Mechanical Wear
Vehicle-mounted aerial equipment sees repeated loading and movement throughout its working life.
Wear can develop in:
- Pins and bushings
- Bearings
- Pivot points
- Rotation systems
- Outriggers
- Boom components
- Cylinder mounts
- Platform leveling components
- Structural connections
A small amount of wear in several areas can add up to excessive movement or poor operation.
Mondak can inspect and repair the mechanical side instead of trying to compensate for worn components with hydraulic adjustments.
Upper & Lower Controls
Aerial devices need reliable control from both the platform and the ground.
Mondak can troubleshoot:
- Upper controls
- Lower controls
- Joysticks
- Switches
- Solenoids
- Sensors
- Wiring
- Connectors
- Relays
- Interlocks
- Control modules
- Communication problems
If a function works from one control station but not the other, that gives us a good place to start.
Sometimes the hydraulic system is ready to work, but the command never reaches it.
PTO, Pump & Truck Systems
The aerial device depends on the truck underneath it.
Depending on the equipment, Mondak can work on:
- PTO systems
- Hydraulic pumps
- Pump drives
- Engine-related issues
- Electrical power
- Charging systems
- Truck-to-aerial wiring
- Hydraulic plumbing
- Outrigger systems
- Related support equipment
If the aerial unit is losing hydraulic performance, the problem may start before the oil ever reaches the boom.
Insulated Aerial Devices
Mondak also works on insulated bucket trucks and aerial devices.
On this equipment, the condition of the boom and insulating components matters beyond normal hydraulic and mechanical operation.
Mondak can help with:
- Insulated aerial repair
- Hydraulic leaks around insulated sections
- Controls and electrical systems
- Mechanical repairs
- Structural concerns
Sometimes You Already Know What Failed
Not every bucket truck repair starts with troubleshooting.
You may already know what broke.
The problem may be that the part is obsolete, hard to find, or no one wants to work on an older machine.
Depending on the repair, Mondak can look at options such as:
- Rebuilding existing components
- Cross-referencing replacement parts
- Repairing hydraulic cylinders
- Repairing worn shafts or bores
- Manufacturing pins or bushings
- Machining replacement parts
- Fabricating brackets or structural components
- Adapting hydraulic components
- Repairing wiring and controls
If the equipment is worth repairing, we are willing to look at practical ways to keep it working.
Inspection & Repair in One Place
Mondak also provides annual aerial inspections.
If an inspection identifies:
- Excessive pin or bushing wear
- Hydraulic leaks
- Damaged hoses
- Bearing wear
- Electrical problems
- Control problems
- Structural concerns
- Other repair needs
we can help address those findings.
The inspection and the repair do not have to become two separate projects with two different companies.
Field & Shop Repair
Many bucket truck repairs can be handled in the field.
More extensive mechanical work, cylinder repair, machining, fabrication, structural repair, or major teardown may make more sense in the Mondak shop.
We can help determine the practical approach based on the equipment and the repair.
Bucket Truck or Aerial Device Giving You Trouble?
Whether you have an Altec, Terex / Hi-Ranger, Versalift, Elliott, Dur-A-Lift, or another vehicle-mounted aerial device, give Mondak a call.
Tell us:
- Manufacturer
- Model
- Serial number if available
- What function is giving you trouble
- Any hydraulic, electrical, or mechanical symptoms
- Whether the problem is constant or intermittent
- What has already been tried
If you already know what failed, tell us that too.
Tell us what the equipment is doing. We'll start there.
Contact Mondak Equipment