Spotting Hydraulic Hose Wear Early
Updated: 1 day ago
Most hydraulic hoses give a warning before they fail: a worn or cracked cover, an oily fitting, a bulge, or a hose rubbing where it shouldn't. Catch these on a pre-start walk-around and you can replace the hose on your schedule, instead of having a machine stopped on site.
Flow Force Hydraulics is a local family-run, Appin-based 24/7 mobile hydraulic repair service. Here's what to look for.
1. Abrasion: the cover is wearing through
Hoses that rub on the boom, chassis, mast or another hose slowly wear through the outer rubber cover. If you can see the wire braid underneath, the hose has lost its protection and should be replaced. Don't wait for it to leak.
Where to look: where hoses cross each other, pass through brackets, run over the boom pivot, or bend near the chassis on tippers.
2. Cracking, hardening or a "crazed" surface
Heat, sun and age make hose covers harden and crack. Hoses running close to the engine or exhaust often look baked. Fine cracks in the cover, especially at bends, mean the rubber is breaking down.
3. Blisters or bulges
A bubble or bulge in the cover usually means oil is getting between the layers of the hose. A blistered hose is close to failing. Stop and get it replaced.
4. Wet or oily fittings
A film of oil and dirt building up at a crimped fitting is often the first sign of a leak. Wipe it clean and check again after a shift. If it's wet again, the fitting or hose end is leaking.
5. Kinks, twists and tight bends
Hoses that were twisted when fitted, or that bend too tightly at the fitting, wear out much faster. If the printed line along the hose spirals, or the hose bends hard against the fitting, have it checked.
6. Flattened or crushed sections
A hose that's been pinched by a bucket, a track or a mast channel can be damaged inside even if the outside looks OK. Flattened sections restrict flow and weaken the hose.
7. Drips, puddles and slow movement
Fresh oil under the machine overnight, a hydraulic tank that keeps needing a top-up, or functions that feel slow or weak can all point to a leak somewhere in the system.
A 30-second pre-start hose check
Walk around the machine and look along every hose you can see safely.
Look for exposed braid, cracks, blisters and wet fittings.
Look under the machine for fresh drips.
Check the hydraulic oil level.
Report anything unusual before the machine starts work, not after.
Never run your hand along a hydraulic hose to find a leak. A pinhole leak under pressure can inject oil through the skin. That's a medical emergency even if it looks minor. With the machine shut down and pressure released, use a piece of cardboard to locate a leak.
When to replace instead of watching it
Replace the hose if:
the wire braid is exposed
there are blisters or bulges
a fitting keeps leaking after cleaning
the hose is flattened, kinked or crushed
the cover is cracked through at a bend
When we replace a hose, we make it on the spot to match the original size, fitting ends and pressure rating, and we check it for leaks before handover. We don't fit a lower-rated substitute.
What helps us when you call
The machine make and model, and where it is
Which hose it is (for example boom up, bucket curl, tipper hoist or forklift mast)
A photo of the hose and both fitting ends
Hose looking tired, or already leaking? Call Flow Force Hydraulics 24/7 on 0459 698 249.
We're based in Appin and service the surrounding suburbs, from Wollongong to Penrith and Hornsby. Further afield on request. More on our hydraulic hose repairs and replacement and service areas.
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