Heavy-Duty & Industrial Engine Repair

Maybe it starts hard, runs hot, loses power under load, uses coolant, misfires, smokes or keeps setting the same fault.

On a pump, generator or compressor package, it may run fine unloaded and fall short when the driven equipment starts asking for power.

You already know something changed.

Mondak's job is to determine what changed, why it changed and how deep the repair actually needs to go.

Mondak works across a broad range of heavy-duty and industrial engine platforms including:

• Cummins
• Caterpillar
• Detroit
• Mack
• Volvo
• PACCAR
• International / Navistar
• John Deere
• DEUTZ
• Perkins
• Kubota
• Ford Industrial
• Mitsubishi
• Nissan
• MTU
• EMD
• GE / Wabtec and more

Common CAT platforms include:

• 3406B
• 3406C
• 3406E
• 3406E (2WS)
• C-15
• C-15 (6NZ)
• 9NZ
• MBN
• C15 ACERT
• BXS
• MXS
• NXS
• C7
• C9 / C9.3
• C11
• C12
• C13
• C18
• Larger CAT industrial engines

On older Caterpillar engines, the serial prefix matters.

If you tell us:

"It's a 2WS."

or

"It's a 6NZ."

we know what you are talking about.

The exact engine serial number or prefix can get us considerably closer than simply saying it is a C15.

John Deere engines are found in considerably more than farm equipment.

Mondak works on Deere industrial and PowerTech platforms used in:

• Construction equipment
• Agricultural equipment
• Pumps
• Generator sets
• Compressors
• Industrial machines
• Specialty equipment

Common families include:

• 3029
• 4045
• 6068
• 6090
• 13.5L
• Newer JD9, JD14 and JD18 platforms

Older industrial equipment often uses engines a traditional heavy-truck repair shop may not see every day.

Mondak also works on:

• Ford Industrial engines
• Mitsubishi industrial engines
• Nissan industrial engines
• Gasoline forklift engines
• Propane / LPG engines
• Dual-fuel industrial engines

These engines are common in older forklifts, generators and specialized industrial machinery.

Old and simple does not mean there is nothing to diagnose.

Mondak also works around large EMD / Electro-Motive engines used in locomotive and industrial applications.

Important engine families include:

• EMD 567
• EMD 645
• EMD 710
• Other locomotive and industrial EMD applications

These engines can be found in yard switchers, locomotives, power-generation equipment and other heavy industrial applications.

The engine itself is only one part of the machine.

On a locomotive, an apparent engine problem may also involve load control, generator equipment, electrical controls or the traction system.

A stationary engine has a different job than an engine moving a truck down the road.

It may spend its entire day driving a:

• Pump
• Generator
• Compressor
• Hydraulic system

Sometimes the engine runs normally unloaded and develops the problem only when the driven equipment starts demanding power.

That means we may need to look at both sides.

Problems can involve:

• Fuel delivery
• Ignition
• Turbocharging
• Cooling
• Lubrication
• Electronic engine controls
• Governor and speed control
• Sensors
• Wiring
• Generator loading
• Pump loading
• Compressor loading
• Driven-equipment condition

Sometimes the engine is losing power. Sometimes the equipment behind it is asking the engine to do something it shouldn't.

Loss of power does not automatically mean an overhaul.

The same complaint can come from:

• Fuel restriction
• Low fuel pressure
• Injector problems
• Ignition problems
• Air restriction
• Boost leaks
• Turbocharger problems
• Sensor faults
• Wiring
• Cooling problems
• Exhaust restriction
• Aftertreatment derates
• Electronic controls
• Mechanical compression loss
• Internal engine damage
• Excessive load from the driven equipment

We want to know whether the problem is actually inside the engine before treating it like an internal engine failure.

Mondak also has equipment for work beyond ordinary diagnostics.

Capabilities include:

• ECM programming
• Replacement ECM setup
• Calibration installation
• Module configuration
• ECU reading and writing
• Calibration transfer
• Controller recovery
• Bench programming
• Direct ECU communication

Our equipment includes:

• NEXIQ
• Dimsport New Genius
• Dimsport New Trasdata
• OEM programming platforms
• Multi-pin diagnostic equipment

If the normal diagnostic connector is missing, damaged or uncommon, our multi-pin equipment gives us another way to communicate with supported systems using the proper wiring information and pinout.

An unusual connector does not automatically end the diagnostic process.

When the problem really is internal, Mondak can handle major engine work.

Depending on the engine and application, that can include:

• Engine removal and installation
• Cylinder-head work
• Head-gasket failures
• Pistons and liners
• Bearings
• Camshaft and valvetrain
• Lubrication-system failures
• Cooling-system repairs
• Turbocharger repairs
• Fuel-system repairs
• Ignition-system repairs
• Complete engine replacement
• Repower-related work

Sometimes rebuilding makes sense.

Sometimes replacing the engine makes sense.

Sometimes keeping an older machine working means adapting a solution the original parts book never considered.

Older industrial engines can have plenty of useful life left while the parts support behind them disappears.

Components may be:

• Difficult to find
• No longer manufactured
• Available only rebuilt
• Obsolete
• Superseded without a direct replacement

Depending on the situation, Mondak can look at:

• Repairing the existing component
• Rebuilding
• Cross-referencing replacements
• Machining
• Fabricating
• Adapting newer components
• Wiring and control modifications
• ECM programming
• Repower options

A discontinued part number does not automatically mean the engine, or the machine around it, is finished.