John Deere 350 Crawler Dozer: Specs, Parts & Common Issues
The John Deere 350 Crawler Dozer (original model, no letter) was introduced in 1965 as a compact crawler tractor designed for light dozing, grading, and slope work. With a John Deere 3-cylinder diesel engine producing approximately 42 horsepower, the 350 offered an ideal balance of maneuverability and capability for small farms, orchards, and light commercial dozing applications. The original 350 launched the long-running 350-series JD crawler line that ran through the 350B, 350C, and into modern JD compact crawler dozers.
The John Deere 350 Crawler Dozer is the original model in the long-running John Deere 350-series compact crawler line, introduced in 1965 as a successor to the John Deere 1010 / 2010 Crawler dozers. The 350 brought a modern 3-cylinder John Deere diesel engine, refined chassis, and improved hydraulics to the compact-class JD crawler segment - designed for light dozing, grading, and slope work where larger machines would be overkill.
For owners and operators today, the original 350 is a foundational compact JD crawler dozer. The combination of John Deere 3-cylinder diesel engine reliability, simple mechanical drivetrain, broad parts availability across the JD 300-series tractor family, and field-serviceable simplicity makes the 350 attractive to small farm operators, hobby restorers, and light commercial users.
At-a-glance specifications
John Deere 350 Crawler Dozer - factory specifications
- Production era
- Introduced 1965 (original 350, no letter suffix)
- Predecessor
- John Deere 1010 / 2010 Crawler Dozers (1960-1965)
- Successor
- John Deere 350B Dozer (1971-1975)
- Engine
- John Deere 3-cylinder diesel
- Power
- ~42 horsepower flywheel
- Transmission
- Mechanical (multi-speed forward and reverse)
- Hydraulics
- Implement hydraulics for dozer blade
- Operating weight
- ~9,000 - 10,500 lb depending on configuration
- Blade
- Angle / tilt dozer blade options
- Serial plate location
- Right side of chassis frame or near operator station
John Deere 3-cylinder diesel engine
The original John Deere 350 uses the John Deere 3-cylinder diesel engine - part of the broader John Deere “New Generation” engine lineup of the era. The 3-cylinder Deere diesel is well-documented and well-supported, with a parts ecosystem shared across multiple John Deere small tractor applications. Approximately 42 horsepower flywheel.
Routine engine service items: water pump, alternator, starter, fuel injection pump, injectors, head gasket, cylinder kits, bearings. The 3-cylinder Deere diesel is one of the most-supportable vintage compact diesel engines in the JD parts ecosystem. Browse the John Deere Dozer Parts hub for current 350 engine service kits.
Transmission and drivetrain
The 350 uses a mechanical transmission with multiple forward and reverse speeds. Steering is by track-disconnect clutches - pulling on the steering lever disengages drive to that track, causing the machine to pivot. The mechanical drivetrain is simple, field-serviceable, and well-documented.
Routine drivetrain wear items: clutch facing replacement, transmission gear and bearing service, steering clutch facings, final drive bearings. The drivetrain is straightforward to rebuild on a budget.
Track undercarriage
The 350 undercarriage is compact - sized for the small-class chassis. Sprocket bolt patterns, idler geometries, and master pin dimensions are 350-specific. Track chain elongation, sprocket tooth wear, roller seal failure, and idler bushing wear are routine items on a 50-plus-year-old machine.
Browse the John Deere Dozer Parts hub for current 350 undercarriage availability.
Blade system and hydraulics
The 350 ships with an angle or tilt dozer blade - hydraulically actuated. Blade cylinders, blade-carrier hardware, and cutting edges are routine service items. Cutting edge replacement is needed every few hundred to few thousand hours of dozing depending on material.
Common service items on a 50-plus-year-old 350
Engine accessory aging
Water pump, alternator, starter, fuel injection pump, and injectors on the JD 3-cyl diesel are routine service items on 50+ year old engines.
Clutch and steering clutch service
Main engine clutch and steering clutches wear with use. Replacement clutch facings, springs, and pressure plate service are routine.
Track undercarriage replacement
Track chain, sprocket, idler, and roller wear are all routine on 50-year-old undercarriage. Aftermarket replacement components are available.
Hydraulic seal failure
Blade cylinder seals fail with age. Cylinder rod chrome corrosion and seal weep are typical.
Operator station
Original seat cushions, floorboard wear, and the lack of factory ROPS on most early units. Aftermarket ROPS during restoration is common for safety.
Wiring and electrical
50-plus-year-old wiring harnesses are routinely degraded.
Parts and cross-fit components for the John Deere 350
| Component area | What to look for | Notes |
|---|---|---|
| Sprockets & segments | Compact-class track sprocket assemblies, bolt-on segments | 350 family - confirm sub-generation by serial. |
| Idlers & rollers | Front idler assemblies, top and bottom roller sets | Compact JD crawler undercarriage. |
| Track recoil & adjusters | Recoil spring, adjuster yoke, chrome rod | Confirm by serial. |
| Master pins | Track master pin and bushing | 350-class specific. |
| Blade cutting edges | Compact cutting edges, end bits | Aftermarket cutting edges widely available. |
| Engine clutch & steering clutch parts | Clutch facings, springs, pressure plates | Routine wear items on the 350 drivetrain. |
| Engine accessory parts (JD 3-cyl diesel) | Water pump, alternator, starter, fuel injection | John Deere 3-cylinder diesel parts ecosystem is broad through JD parts suppliers. |
| Radiators & cooling | Radiator cores, fan belts, hose sets | 350 cooling system. |
| Filter service kits | Engine oil, fuel, air filter sets | Vintage JD filter kits. |
| Blade cylinder seal kits | Angle, tilt, lift cylinder seal kits | Confirm cylinder dimensions before ordering. |
| Operator seat | Vintage tractor seat with mount | Universal vintage tractor seats fit with adapter brackets. |
For 350 parts inventory and cross-fit confirmation, browse the John Deere Dozer Parts hub or contact our parts desk directly.
Working on a John Deere 350?
The original 350 is the founding entry in the long-running JD 350-series compact crawler line. Our specialists can verify configuration by serial and help source vintage JD 3-cylinder engine and undercarriage parts.
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Request a PartWhy the 350 matters
The original 350 founded the John Deere compact crawler dozer line that ran for decades and continues in modern form today. For small farm operators, orchard maintenance crews, hobby restorers, and light commercial users, the 350 remains a practical, field-serviceable compact crawler with a well-supported JD 3-cylinder diesel engine and simple mechanical drivetrain.
