Excavator Repair Cost
A undercarriage replacement on a Caterpillar 320 GC typically runs $8,550-$52,000 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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Caterpillar 320 GC undercarriage
$8,550-$52,000
estimated total, parts and labor
Labor hours
11-32 hrs
Shop rate
$125-$175/hr
Parts
$7,150-$46,400
* Static estimate from heavy-equipment norms, not a quote. Real cost depends on parts source, access, and collateral damage.Get an exact estimate →
Replacing wear parts as a set: track chains, rollers (top and bottom), idlers, sprockets, and the track shoes or rubber tracks. A full undercarriage is a big-ticket maintenance item, not a single failure, and is usually done all at once to avoid re-tearing the machine down.
The range above moves with these factors. The biggest swing is usually parts source and whether the failure damaged anything downstream.
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A undercarriage repair at $8,550-$52,000 is usually worth it on a Caterpillar 320 GC, but it pays to know the machine's current value first.
See Caterpillar 320 GC resale value →Hydraulic Pump Replacement
$6,000-$14,400
Final Drive / Travel Motor Replacement
$4,600-$14,600
Engine Rebuild / Replacement
$14,700-$53,450
Hydraulic Cylinder Reseal / Replacement
$1,200-$7,650
Fuel Injector / Injection System Repair
$2,100-$13,150
A/C Compressor / System Repair
$1,000-$4,600
Alternator Replacement
$600-$2,300
Starter Motor Replacement
$700-$2,650