Top Drive & Power Swivel Repair
Mondak Equipment repairs and troubleshoots power swivels, top drives, and the equipment that supports them.
Power Swivel & Top Drive Repair for Workover and Drilling Equipment
That includes mechanical, hydraulic, electrical, diesel, and control-system problems on everything from trailer-mounted workover-rig power swivels to integrated drilling-rig top drives.
We work on the complete system.
Brands & Models We Work On
Mondak works on equipment from manufacturers including:
Power Swivels
- VentureTech
- XK-90
- XK-100
- XK-150
- Bowen
- Hydraulic power swivels
- Trailer-mounted power swivel packages
Top Drives
- VentureTech
- ZK-150
- ZK-250
- NOV / Varco
- TDS-8 Series
- TDS-10 Series
- TDS-11 Series
- Canrig
- 1050 Series
- 1165 Series
- 1275 Series
- TESCO
- EMI
- EXI
- HXI
- ECI Series
And other makes and models.
If your equipment is not listed, call us with the manufacturer, model, and what it is doing.
Trailer-Mounted Power Swivel Repair
Many of the Bowen and VentureTech XK-90 and XK-100 power swivels Mondak sees are trailer-mounted systems used with workover rigs for drillouts.
On these units, the swivel is only part of the equipment.
Mondak can work on the complete trailer package, including:
- Power swivel
- Diesel engine
- Hydraulic power unit
- Hydraulic pumps and motors
- Reservoirs and filtration
- Cooling systems
- Hydraulic hose reels
- High-pressure hoses and hard lines
- Valves and manifolds
- Remote controls
- Electrical wiring and controls
- Trailer-mounted equipment
If a swivel loses torque or speed under load, the problem may be in the swivel, or it may be back on the trailer.
The diesel engine may not be holding RPM. The pump may not be producing the required flow. A relief valve may be bypassing. Hydraulic oil may be overheating. A hose or reel may be restricting flow.
That is why we look at the entire package.
Power Swivel Mechanical Repair
Mondak can inspect and repair:
- Hydraulic drive motors
- Main stems and shafts
- Splines
- Bearings
- Washpipe assemblies
- Packing and seals
- Gooseneck components
- Saver subs
- Tilt components
- Hydraulic connections
A leaking seal may be the visible problem, but excessive shaft or bearing movement can quickly damage the replacement.
We want to correct the failure.
Hydraulic Hose Reels, Hoses & Lines
Power swivel hose reels and hydraulic lines see constant movement and abuse.
Mondak can repair:
- Hydraulic hose reels
- Reel bearings and swivels
- Rollers and guides
- High-pressure hoses
- Hard hydraulic lines
- Fittings
- Clamps and supports
- Hose routing
Chafing, tight bend radius, vibration, repeated flexing, poor routing, and damaged reel components can all lead to hose and line failures.
If the same hose keeps failing, replacing it without correcting the wear point only starts the problem over again.
Diesel Engines & Remote Controls
Trailer-mounted power swivel systems depend on more than hydraulics.
Mondak can troubleshoot and repair problems involving:
- Diesel engine performance
- Electronic engine controls
- Fuel and cooling systems
- Hydraulic pump drives
- Remote controls
- Control cables
- Switches
- Solenoids
- Wiring and connectors
- Hydraulic pilot controls
A remote-control problem can look like a hydraulic problem when the command never fully reaches the valve or control system.
Top Drive Repair
Mondak also repairs and troubleshoots top drives used on drilling rigs.
Depending on the manufacturer and model, we can work on:
- Drive motors
- Gearboxes
- Bearings
- Shafts and quills
- Lubrication systems
- Cooling systems
- Washpipe assemblies
- Pipe handlers
- Grabber assemblies
- Link tilt
- Torque restraint
- Hydraulic systems
- Service loops
- Electrical systems
- Sensors and controls
Mechanical Top Drive Repair
Top drives may use sophisticated controls, but there is still a lot of mechanical equipment carrying load and transferring torque.
Mondak can address wear and failures involving:
- Gearboxes
- Gears
- Bearings
- Shafts
- Quills
- Splines
- Pins and bushings
- Torque-restraint components
- Guide and dolly systems
- Pipe-handler components
- Link-tilt assemblies
Mechanical wear can show up as vibration, heat, excessive movement, noise, or repeated bearing and seal failures.
Service Loops, Hoses & Electrical Cables
A top drive travels up and down the derrick, and everything connected to it has to move with it.
Mondak can inspect and repair:
- Hydraulic service loops
- Electrical service loops
- High-pressure hoses
- Electrical cables
- Connectors
- Clamps and supports
- Hose and cable routing
- Chafing and abrasion
- Flex-point wear
A failed hose or cable may be obvious.
The routing or movement that damaged it may be the real problem.
Electrical & Control Systems
Depending on the equipment, Mondak can troubleshoot:
- Electric drive motors
- Motor wiring
- VFD-related faults
- Encoders
- Speed feedback
- Sensors
- PLC inputs and outputs
- Control wiring
- Connectors
- Interlocks
- Communication problems
A fault code gives us information.
It does not always identify the failed component.
Repairing Older & Modified Equipment
Power swivels and top drives can remain productive long after some original components become difficult to source.
Mondak can look at practical repair options including:
- Bearing and seal cross-references
- Hydraulic component replacements
- Shaft and bore repair
- Machining
- Welding and fabrication
- Hose and hard-line replacement
- Electrical component replacement
- Sensor replacement
- Control updates
- Mechanical repairs
If the equipment is worth repairing, we want to find a practical way to keep it working.
Common Top Drive & Power Swivel Problems
Call Mondak if the equipment is:
- Losing torque or speed
- Running hot
- Leaking at the washpipe
- Making bearing or gearbox noise
- Vibrating
- Repeatedly damaging seals
- Having pipe-handler or link-tilt problems
- Wearing torque-restraint components
- Damaging hoses or service loops
- Having hose-reel problems
- Having diesel-engine or HPU problems
- Having remote-control issues
- Showing electrical or control faults
- Working intermittently
Field Service & Shop Repair
Some repairs can be handled at the rig.
More extensive mechanical work, bearing replacement, machining, fabrication, hydraulic repair, or teardown may make more sense in the Mondak shop.
For trailer-mounted power swivels, we can also look at the swivel, diesel engine, HPU, hose reels, hoses, controls, and trailer equipment as one complete system.
Top Drive or Power Swivel Giving You Problems?
Whether you have a VentureTech XK-90 or XK-100, Bowen power swivel, VentureTech ZK top drive, NOV / Varco TDS, Canrig, TESCO, or another make or model, give Mondak a call.
Tell us what you have and what it is doing.
We'll start there.