Mar 7 • Hydraulic Issues
Machine problem I ran into this week – curious what others think
Machine: Manitou MTA10055
Issue: Hydraulic hoses inside the boom started rubbing the top of the boom after about a week of operation.
Situation:I replaced a set of hydraulic hoses inside the boom. During installation we cycled the boom several times and checked clearance. Everything looked good and nothing was touching.
About a week later the operator reports a noise when extending the boom.
Inspection:Opened the boom again and found the hoses had started scraping the top of the boom structure.
What’s strange is during installation and testing they had plenty of clearance.
Possible causes I was considering:
- Hose twisting under pressure and changing position
- Movement when the hoses get fully pressurized during real work
- Boom flex under load changing the geometry slightly
- Hose length allowing them to shift over time
Plan was to reroute them slightly and add protection to prevent contact.
Has anyone seen hoses move like this after installation even when clearance looked good during testing?
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Machine problem I ran into this week – curious what others think
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