This page now follows the imported theme’s large-image and rounded-panel language, but the content is straight from the Fullstack Mechanics field workflow: breakdowns, diagnostics, hydraulic failures, and real fixes.
On-site fuel filter and water separator replacement on a Bobcat S770 skid steer.
Equipment: Bobcat S770 Skid Steer
Fix: Replaced clogged fuel filter and water separator. Bled system and confirmed clean fuel delivery at full RPM.
Field hydraulic hose and fitting repair on a CAT excavator mid-project.
Equipment: CAT Excavator
Fix: Diagnosed leak source, fabricated replacement hose on-site, and restored full hydraulic function within two hours.
Track link inspection and undercarriage tightening on a tracked machine.
Equipment: Tracked Equipment
Fix: Adjusted track tension, inspected sprocket and idler wear, and confirmed safe operating spec.
Hydraulic cylinder rod seal replacement performed in the field.
Equipment: Hydraulic Cylinder
Fix: Removed and disassembled cylinder in the field, replaced seal kit, and reinstalled with zero-leak test.
On-board diagnostic scan using CAT ET to pull fault codes and live sensor data.
Equipment: CAT Equipment
Fix: Connected CAT ET, identified a failing coolant temp sensor, replaced on-site, and cleared all codes.
Cylinder head removal and gasket replacement on a heavy equipment diesel engine.
Equipment: Heavy Equipment Diesel Engine
Fix: Pulled head, confirmed blown head gasket, resurfaced head, and installed new gasket set with proper torque spec.
Full tilt-up service on a CASE track loader for drivetrain and hydraulic access.
Equipment: CASE Track Loader
Fix: Tilted cab for full access, serviced hydraulic pump, inspected drive motors, and completed undercarriage evaluation.
Service truck dispatch to a Komatsu excavator breakdown at a remote Utah site.
Equipment: Komatsu PC210 Excavator
Fix: Arrived with full diagnostic kit, identified failed swing motor solenoid, sourced part same day, and returned machine to service.
