John Deere

John Deere diesel agricultural tractors work long hours in heat, dust, and elevation. We keep them productive with test-first diagnostics, OEM-spec parts/fluids, and clear communication—so you finish more acres per day with fewer surprises.

Diagnostics & Common Repairs

Root-cause testing first; parts only go on when the failure is confirmed.

• CAN/ISO-BUS scan + live data; fuel/air/boost/cooling pressure & flow checks
• Hard starts, derates, smoke, poor throttle response, or frequent regens
• DPF/DEF/SCR faults, NOx/EGT sensors, dosing lines/injector issues
• Radiator/CAC cleaning or replacement, viscous/fan drive service, charge-air leaks
• Alternators/starters, battery/load tests, connectors/grounds, lighting
• Cab HVAC performance: blower/resistor, blend/doors, refrigerant service

Hydraulics, PTO & Chassis

• SCV & power-beyond flow/pressure tests, spool leakage, load-sense/priority valves
• 3-point: draft/position calibration, lift cylinder reseal, hitch height issues
• PTO clutches/brakes, speed sensors, output seals, interlocks
• MFWD/front axle & finals, brakes, steering/suspension, loaders and frames

Major Repairs — Engine

Deere PowerTech platforms and Tier 3 → FT4/Stage V variants, validated under load after repair.

John Deere PowerTech coverage

• 2.9L (3029), 4.5L (4045), 6.8L (6068), 9.0L (6090), 13.5L (6135)
• PowerTech E/M (mechanical/early HPCR), PowerTech Plus (HPCR), PVX/PSX (VGT/compound turbo), FT4 with SCR/DPF

What we do

• Failure confirmation: compression/leak-down, injector balance/return, rail-pressure command/actual, boost/CAC smoke test, cooling pressure/flow
• Fuel system (Bosch HPCR): coded injector sets, high-pressure pump R&R, rails/lines, full contamination flush end-to-end
• Air/EGR/turbo: EGR coolers/valves, VGT actuator/vanes, CHRA service, charge-air integrity
• Sealing/cooling: head gasket, front/rear main, oil cooler, water pump, cooling-stack refresh
• Overhauls & rebuilds (in-chassis or out-of-chassis): liners/pistons/rings, bearings, oil pump, timing set, cylinder-head service (pressure test/surface/seats/guides), complete gasket/seal kits, torque-angle recorded; ECU calibrations, break-in oil and first-service plan
• Validation: hot/cold starts, no-load and field/road test on a pull or PTO dyno, leak/boost checks, post-repair datalogs you keep

Also-Supported Agricultural Diesel Engines (Non-Deere)

Same test-first process and contamination protocol where fuel systems are involved.

• Cummins: QSB 4.5/6.7, QSC 8.3, QSL9, QSX11.9/15—HPCR injectors/CM pumps, VGT actuators, EGR/DPF/SCR, head gaskets, in-frame overhauls
• Yanmar: 4TNV/4TN—common-rail diagnostics, EGR/DPF, fuel system with contamination protocol

Major Repairs — Transmissions & Drivelines

• PowerShift / AutoPowr / IVT: adaptations, clutch-pack pressures, solenoids/valve bodies, charge & lube pressure
• Rebuilds or approved reman R&R with programming/learn-in; validated on a pull or PTO dyno
• MFWD hubs/final drives, differentials, drivelines/U-joints, locks and sensors

Preventive Maintenance & Seasonal Readiness

Hours- and calendar-based PM tuned to dust, heat, idle/load %, and storage.

• Engine oil + fuel/air filters; hydraulic & transmission filters; coolant test/exchange
• DPF cleaning by hours/backpressure; DEF quality, heaters, and line checks
• Hub & wheel-end torque, belts/hoses, valve set (where applicable)
• Pre-planting and post-harvest inspections with written reports and parts forecasts

Field Service & Fleet Support

• On-farm mobile repairs and emergency calls; clean-room fuel work when contamination is suspected
• Serial-level histories, PM calendars, consolidated invoicing, and clear documentation for resale and audits

Schedule John Deere diesel service with confidence—test-first diagnostics, durable repairs/overhauls, and documentation that keeps your acres on schedule.