Hydraulic Catwalk Repair

We repair and troubleshoot trailer-mounted and skid-mounted hydraulic catwalks used on drilling, workover, completion, and well-service operations.

Diagnosis, or the Part Nobody Has

Trailer-Mounted & Skid-Mounted Hydraulic Catwalk Repair

When a hydraulic catwalk is down, the problem is not always figuring out what failed.

Sometimes the issue needs to be diagnosed. Other times, you already know exactly what is wrong: you just cannot get the part, the component is obsolete, or you cannot find anyone willing to take on the repair.

Mondak Equipment can help with both.

That can mean diagnosing a hydraulic, mechanical, electrical, or control problem. It can also mean repairing an existing component, finding an alternative, machining or fabricating what is needed, or working out a practical solution for equipment that is no longer well supported.

Mostly Pipe Wranglers Around Here

Brands & Models We Work On

A lot of the hydraulic catwalk equipment we see in our area comes from Forum / FET and the Pipe Wranglers line.

We work on equipment including:

Forum / FET Pipe Wranglers

  • Pipe Wrangler 2000
  • Pipe Wrangler 3000
  • Pipe Wrangler 4000
  • Pipe Wrangler 4500
  • Pipe Wrangler 5000
  • Little Tripper

Canrig

  • PC 2000
  • PC 3000
  • PC 4000
  • PC 8000

TESCO

  • TAC 23
  • TAC 45
  • TAC 45M

NOV

  • PipeCat equipment
  • Related pipe-handling systems

And other trailer-mounted and skid-mounted hydraulic catwalks.

If your make or model is not listed, call us. We are not limited to the equipment shown here.

When the First Symptom Is Not the Story

Sometimes You Need Troubleshooting

A catwalk may be slow, bind under load, stop in the middle of a cycle, work intermittently, or have one function that simply will not operate correctly.

The problem could be hydraulic.

It could also be mechanical wear, a control issue, a damaged sensor, wiring, a worn chain or sprocket, a failing bearing, or a power unit that is not supplying what the machine needs.

Mondak works through the equipment to determine where the problem is coming from instead of assuming the first symptom tells the whole story.

No Mystery, Just No Part

Sometimes You Already Know What Broke

Not every repair starts with a mystery.

You may already know you need a cylinder, valve, bearing, roller, pin, bushing, sensor, hydraulic motor, chain, sprocket, or another component.

The problem may be that:

  • The original part is obsolete
  • The manufacturer no longer supports it
  • Lead time is too long
  • The component is difficult to identify
  • Nobody wants to repair the old assembly
  • A direct replacement is no longer available

That does not automatically mean the machine is finished.

Depending on the situation, Mondak can look at options such as:

  • Rebuilding the existing component
  • Cross-referencing a replacement
  • Repairing worn bores or shafts
  • Manufacturing pins or bushings
  • Machining replacement parts
  • Adapting hydraulic components
  • Updating controls
  • Fabricating brackets or structural components
  • Reworking hydraulic lines or hose routing
  • Developing another practical repair

Sometimes the answer is a new part.

Sometimes the answer is figuring out how to keep a good piece of equipment working without one.

Weight Through Repeated Cycles

Mechanical Catwalk Repair

Hydraulic catwalks move a lot of weight through repeated cycles, and that eventually shows up in the mechanical components.

Mondak can inspect and repair:

  • Skate assemblies
  • Rollers
  • Bearings
  • Chains
  • Sprockets
  • Shafts
  • Pins and bushings
  • Pivot points
  • Lift arms
  • Guides
  • Kickers
  • Trough components
  • Cylinder mounts
  • Worn bores
  • Structural components

A catwalk can have plenty of hydraulic pressure and still perform poorly if something is worn, binding, or out of alignment.

We look at both sides of the machine.

More Pressure for the Same Job

Hydraulic System Repair

Mondak can troubleshoot and repair:

If the machine suddenly needs more pressure to do the same job, we want to know why.

Sometimes the issue is hydraulic.

Sometimes the hydraulics are working harder because something mechanical has changed.

Same Place, Same Hose

Hydraulic Hoses & Hard Lines

Catwalk hoses and hydraulic lines move every time the equipment cycles.

Over time, that movement can lead to:

  • Chafing
  • Abrasion
  • Flex-point wear
  • Tight bend radius
  • Failed clamps
  • Damaged hose guides
  • Rub-through
  • Cracked hard lines
  • Fatigue around fittings and bends

Mondak can repair the damaged line while also looking at what caused it to fail.

If the same hose keeps rubbing through in the same place, installing another hose without fixing the wear point does not solve much.

The Command That Never Arrives

Controls, Remotes & Sensors

Depending on the manufacturer and age of the equipment, hydraulic catwalks may use direct hydraulic controls, wired remotes, wireless remotes, or electronic sequencing.

Mondak can troubleshoot:

  • Wired remote controls
  • Wireless remote systems
  • Joysticks and switches
  • Solenoids
  • Sensors
  • Limit switches
  • Proximity switches
  • Wiring and connectors
  • Relays
  • PLC inputs and outputs
  • Safety interlocks
  • Control panels

If the catwalk stops halfway through a function, the hydraulic system may be capable of moving it.

The command may simply not be getting where it needs to go.

The Machine and Its Power Package

Trailer-Mounted Catwalks

Trailer-mounted hydraulic catwalks can bring their own power and support systems into the repair.

Depending on the unit, Mondak can work on:

If the catwalk is losing performance, the problem may be in the machine itself or in the package supplying it.

We can work through both.

Its Own HPU, or the Rig's

Skid-Mounted Catwalks

Skid-mounted catwalks may use their own HPU or receive hydraulic power from another rig system.

Mondak can work on the catwalk as well as the mechanical, hydraulic, electrical, and control systems supporting it.

Whether the unit is trailer-mounted or skid-mounted, the goal is the same:

figure out what it needs and determine the practical repair.

At the Wellsite or in the Shop

Field Service & Shop Repair

Some hydraulic catwalk repairs can be handled at the wellsite.

Larger mechanical repairs, cylinder work, machining, fabrication, structural repair, or more extensive teardown may make more sense in the Mondak shop.

We can help determine which approach fits the equipment and the repair.

Hydraulic Catwalk Repair

Need Help With a Hydraulic Catwalk?

Whether you have a Forum / FET Pipe Wrangler, Little Tripper, Canrig PC-series, TESCO TAC-series, NOV PipeCat, or another hydraulic catwalk, give Mondak a call.

Maybe you need help figuring out what is wrong.

Maybe you already know exactly what failed and just need someone willing to help solve the problem.

Either way, tell us what you have and what you are dealing with.

We'll start there.

Contact Mondak Equipment

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