Motor Grader Repair Cost
A hydraulic pump replacement on a Komatsu GD555-5 typically runs $4,100-$9,900 all in. Below is the labor and parts breakdown, what drives the cost up or down, and how to get an exact number for your machine.
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Komatsu GD555-5 hydraulic pump
$4,100-$9,900
estimated total, parts and labor
Labor hours
6-12 hrs
Shop rate
$125-$175/hr
Parts
$3,350-$7,800
* Static estimate from heavy-equipment norms, not a quote. Real cost depends on parts source, access, and collateral damage.Get an exact estimate →
Draining and flushing the hydraulic system, removing guarding and lines to reach the pump, swapping the pump (or pump group), then bleeding the system and pressure-testing. On larger machines the pump sits under the cab or counterweight, which adds hours.
The range above moves with these factors. The biggest swing is usually parts source and whether the failure damaged anything downstream.
Describe the job on your Komatsu GD555-5 and get a tailored labor, parts, and total range. Free and instant.
A hydraulic pump repair at $4,100-$9,900 is usually worth it on a Komatsu GD555-5, but it pays to know the machine's current value first.
See Komatsu GD555-5 resale value →