John Deere 350 Crawler Loader: Specs, Parts & Common Issues
The John Deere 350 Crawler Loader is the compact tracked loader sibling to the John Deere 350 Dozer — same chassis, same JD 3-cylinder diesel engine, same mechanical drivetrain, but with a front-mounted hydraulic loader bucket and loader arms in place of the dozer blade. Introduced in the mid-1960s and continuing through multiple revisions, the 350 Crawler Loader filled a versatile niche for trenching, light loading, and material handling on terrain where wheel loaders couldn’t operate.
The John Deere 350 Crawler Loader is the compact tracked loader sibling to the John Deere 350 Dozer. The 350 Crawler Loader shares chassis, drivetrain, engine, and undercarriage with the 350 Dozer — but where the 350 Dozer mounts a dozer blade and pushframe, the 350 Crawler Loader mounts a hydraulic loader bucket on lifting arms. Introduced in the mid-1960s alongside the original 350 Dozer and continuing through multiple revisions, the 350 Crawler Loader filled a versatile niche for trenching, light loading, material handling, and site cleanup on terrain where wheel loaders struggled.
For owners and operators today, the 350 Crawler Loader is a practical compact tracked loader for small farm, orchard, light commercial, and hobby applications. The combination of John Deere 3-cylinder diesel engine reliability, broad parts availability, and field-serviceable simplicity makes the 350 Crawler Loader attractive in the used market.
At-a-glance specifications
John Deere 350 Crawler Loader — factory specifications
- Production era
- Introduced mid-1960s, continued through multiple revisions
- Sibling machine
- John Deere 350 Dozer (same chassis)
- Engine
- John Deere 3-cylinder diesel
- Power
- ~42 horsepower flywheel
- Transmission
- Mechanical (multi-speed forward and reverse)
- Hydraulics
- Loader hydraulics (boom lift, bucket curl/dump)
- Bucket capacity
- Approximately 0.75 – 1.0 cubic yards (configuration dependent)
- Operating weight
- ~9,500 – 11,000 lb depending on configuration
- Serial plate location
- Right side of chassis frame or near operator station
Crawler loader vs. crawler dozer
The crawler loader configuration uses a front-mounted hydraulic bucket on lifting arms, similar in concept to a wheel loader but mounted on a tracked tractor chassis. Advantages over a wheel loader at this size class:
- Traction on loose ground — tracks provide superior traction on soft soil, snow, or rough terrain.
- Lower ground pressure — wider footprint means the machine doesn’t sink in soft ground.
- Multi-task versatility — light dozing, trenching, loading, material handling, and clean-up.
Trade-offs: slower operating speed compared to a wheel loader, and crawlers typically require a trailer for over-the-road transport.
John Deere 3-cylinder diesel engine
The 350 Crawler Loader uses the same John Deere 3-cylinder diesel engine as the 350 Dozer — part of the broader John Deere “New Generation” engine lineup of the 1960s and 1970s. Approximately 42 horsepower flywheel.
The 3-cylinder Deere diesel ecosystem is broad — accessory parts (water pump, alternator, starter, oil pump, fuel injection pump, injectors) share with other Deere small tractor applications. Browse the John Deere Dozer Parts hub for current 350 Crawler Loader engine service kits.
Loader hydraulic system
The 350 Crawler Loader uses hydraulic cylinders for boom lift and bucket curl/dump. Standard service items at production-run age:
- Boom cylinder seal kits — routine seal-replacement candidate.
- Bucket cylinder seal kits — routine seal-replacement candidate.
- Cylinder rod chrome service — corrosion on rods causes premature seal wear.
- Loader valve seal kits — control valve seals can develop weep at production-run age.
Undercarriage
The 350 Crawler Loader undercarriage is the same as the 350 Dozer undercarriage — compact-class components shared across the 350 family. Sprocket bolt patterns, idler geometries, master pin dimensions, roller designs all cross-fit with the 350 Dozer. Confirm by part number against your serial.
Browse the John Deere Dozer Parts hub for current 350 Crawler Loader undercarriage availability.
Common service items on the 350 Crawler Loader
Engine accessory aging
Water pump, alternator, starter, fuel injection pump, and injectors on the JD 3-cyl diesel are routine service items.
Clutch and steering clutch service
Main engine clutch and steering clutches wear with use. Replacement clutch facings, springs, and pressure plate service are routine.
Loader hydraulic seal failure
Boom and bucket cylinder seals are routine seal-replacement candidates at production-run age. Cylinder rod chrome corrosion is also typical.
Bucket teeth and cutting edge wear
Bucket teeth and cutting edges are the most frequent service items on a working 350 Crawler Loader. Replacement teeth and edges are widely available aftermarket.
Undercarriage replacement cycles
Same undercarriage as the 350 Dozer. Track chains, rollers, idlers, and sprockets all have measurable wear lives.
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.
Parts and cross-fit components for the John Deere 350 Crawler Loader
| Component area | What to look for | Notes |
|---|---|---|
| Sprockets & segments | Compact-class track sprocket assemblies, bolt-on segments | Cross-fits 350 Dozer family. |
| Idlers & rollers | Front idler assemblies, top and bottom roller sets | Cross-fits 350 Dozer undercarriage. |
| Track recoil & adjusters | Recoil spring, adjuster yoke, chrome rod | Confirm by serial. |
| Master pins | Track master pin and bushing | 350-class specific. |
| Bucket teeth & cutting edges | Standard and severe-duty bucket teeth, edges | Loader-specific — different from 350 Dozer blade hardware. |
| Boom & bucket cylinder seal kits | Boom cylinder, bucket cylinder seal kits | Loader-specific cylinder dimensions. |
| Bucket pins & bushings | Pivot pins and bushings | Routine wear items on the bucket pivot. |
| Engine accessory parts (JD 3-cyl diesel) | Water pump, alternator, starter, fuel injection | John Deere 3-cyl diesel parts ecosystem. |
| Radiators & cooling | Radiator cores, fan belts, hose sets | Same cooling system as 350 Dozer. |
| Filter service kits | Engine oil, fuel, air filter sets | Vintage JD filter kits. |
| Engine clutch & steering clutch parts | Clutch facings, springs, pressure plates | Same drivetrain as 350 Dozer. |
| Operator seat | Vintage tractor seat with mount | Universal vintage tractor seats fit with adapter brackets. |
For 350 Crawler Loader 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 Crawler Loader?
The 350 Crawler Loader shares chassis with the 350 Dozer but uses loader-specific bucket and hydraulic hardware on the front. Our specialists can verify dozer vs. loader fitment by serial.
Mon – Fri, 7:00 AM – 5:00 PM CT
Request a PartWhy the 350 Crawler Loader is still in service
The 350 Crawler Loader fills a versatile niche for compact tracked material handling. Small farm operators, orchard maintenance crews, hobby restorers, and light commercial users value the combination of tracked traction, John Deere 3-cylinder diesel reliability, and field-serviceable mechanical drivetrain. For light loader work where a wheel loader would be the wrong tool, the 350 Crawler Loader is the right machine.
