Glendive, Montana
Hydraulic Cylinder Repair in Glendive, MT
Hydraulic cylinder repair is more than replacing seals. Mondak tears down leaking or drifting cylinders at the Glendive shop and inspects every part that affects sealing: the chrome rod for pitting, scoring or bend; the barrel bore for scoring; the gland and piston for wear; and the threads and ports for damage. Worn seals are common, but if the rod is pitted or the barrel is scored, new seals will leak again quickly. After inspection, we explain whether resealing is enough or whether rod, barrel, gland or piston work is needed. Rebuilt cylinders are reassembled and tested before they go back.

Service at a glance
- Equipment
- Loader, boom, lift, tilt, steering, outrigger and dump cylinders from trucks and equipment
- Common problems
- Rod-seal leaks, drifting under load, bent or pitted rods, scored barrels, uneven or weak stroke
- Systems
- Rod and chrome, barrel bore, gland, piston, seals and wear bands, mounting pins and bushings
- Service
- Removal in the field or shop; teardown, honing, resealing and testing done in Glendive
WHAT WE SERVICE
Work tied to the actual fault.
- Cylinder teardown and inspection
- Rod straightness, pitting and chrome checks
- Barrel bore scoring evaluation and honing
- Gland, piston and wear band replacement
- Seal kit selection and resealing
- Reassembly and leak testing
COMMON NEEDS
- Oil leaking past the rod seal
- Cylinder drifting down under load
- Bent rod from impact
- Scored barrel from contamination
- Damaged threads on the rod end
- Cylinder resealed recently and leaking again
THE MONDAK APPROACH
Diagnose first. Repair with purpose.
Every cylinder is disassembled and inspected before we quote the repair. We measure the rod and bore, check straightness and look for scoring. If seals are the only issue, a reseal makes sense. If hardware is damaged, we explain what needs replacing or repair.
Cylinders can be removed in the field when the machine can't travel, but teardown, resealing and pressure testing happen in the Glendive shop.
RELEVANT EQUIPMENT & BRANDS
Brand references indicate service familiarity, not authorized dealer or factory status.
COMMON QUESTIONS
Questions about hydraulic cylinder repair
GLENDIVE, MONTANA
Tell us what’s down.
Share the unit, location and symptoms. We’ll help determine the practical next step.
