Blog

5 min read

When an Engine Problem Isn't an Engine Problem

A Genie was headed for an engine replacement. On hydrostatic equipment, a pump stuck on stroke can load the engine until cranking looks like a seizure.

3 min read

The Forklift That Wouldn't Stop. And Nothing Was Broken

A Jungheinrich ESR 18 in Stanley coasted instead of stopping, and the fix was not a traction controller or a brake job. It was Mode 3.

6 min read

Repairing Old Equipment: Working Order Is Not the Same as Brand New

A 1980s rail mover, a worn axial-piston pump nobody stocks anymore, and the difference between repairing an old machine and restoring it.

7 min read

When Every Hydraulic Fitting in the Building Is Apparently Machined Wrong

A customer brought a brass plumbing flare adapter to the hydraulic counter and concluded our whole stock of -6 FJ fittings was machined wrong. Why 37 and 45 degrees are not interchangeable.

4 min read

After-Hours Service When the Need Arises

Equipment does not care what time it is. How Mondak schedules after-hours coverage across its technicians, and what happens when the call comes in after dark.

5 min read

The Hidden Cost of an Electric Forklift: When the Battery Becomes the Biggest Repair Bill

An industrial forklift battery is not a $200 automotive battery. What replacement really costs, when the battery should be tested first, and when reconditioning can help.

5 min read

Wacker Neuson Hydraulic Repair: Why DIN Light Series Fittings Matter

A Wacker Neuson WL-series wheel loader needed the cab tilted to reach a leaking hose. Why DIN Light Series crimp fittings matter, and what we stock.

4 min read

Out of Service South of Williston: The Scale House Found What the Pre-Trip Didn't

A hotshot truck and trailer were placed out of service at the scale house south of Williston, ND. What the PBBT brake test found, and what the pre-trip missed.

6 min read

Manitou M40-4T No-Crank in Sidney, Montana: From Breakdown Call to Running Again That Evening

A Manitou M40-4T forklift would not crank in Sidney, MT. The starter was fine: a sticking micro switch in the FNR lever broke the starter-enable circuit.

10 min read

Hydraulic Cylinder Repair: Big or Small, We Fix Them All

Hydraulic cylinder repair in Williston, ND: resealing, honing, new rod manufacturing, and Hercules seal sourcing for odd-size, metric and obsolete cylinders.

8 min read

Three Deliveries From Done: What a Blown Liftgate Hose in Watford City Teaches About Hydraulic Hose Failure

A liftgate hose blew three deliveries from the end of an LTL route in Watford City, ND. Where hydraulic hoses actually fail, and what to look for.

5 min read

When a Check Engine Light Threatens the Flow of a $4 Billion Construction Project

A Capacity yard truck at the Bison Generation Station near Ray, ND threw an SCR efficiency code. Mondak traced it to a DEF injector with buildup.

16 min read

When Lack of Maintenance Creates a Much Bigger Problem: Skyjack SJ3219 Steering Failure

A Skyjack SJ3219 scissor lift in Trenton, ND steered sitting still but not driving. Seized wheel pivot pins bent the steer cylinder rods. The full diagnosis.

7 min read

Three Years on the Fence: Bringing a JLG G10-55A TURB Back to Work

A JLG G10-55A TURB telehandler sat three years in Williston, ND with a bent tilt cylinder rod. Mondak pulled the seized pins onsite and rebuilt the cylinder.

3 min read

How We Accidentally Became a Kaeser Compressor Dealer

A hydraulic call in Dore, North Dakota turned into a Kaeser Mobilair M55 turbo and DPF repair, a locked Kubota ECU, and a compressor dealership.

8 min read

Mobile Hydraulic Service: We Bring the Hose Shop to You

Mobile hydraulic hose service from Williston, ND and Glendive, MT. Mondak brings the hose shop to the machine and builds an ID code into every assembly.

4 min read

Saturday Breakdown: When a Genie Starts and Dies

Mondak diagnosed a Genie S-45 that started and shut down, traced it to time-delay relay 121846GT, and got it running in the field near Culbertson, Montana.

8 min read

A Race Against the Hole: Keeping a VentureTech ST80 HPU Running During a Casing Job in Alexander, ND

How Mondak kept a VentureTech ST80 HPU running during a casing job near Alexander, North Dakota, while a replacement hydraulic pump was three days away.