WEST INDUSTRY
1 / 1
| Part Name | Cab Door Gas Operated Pneumatic Cylinder | Part Number | AT340155 |
| Product Type | Gas Spring/Door Spring | Weight | 1.22 lb |
| Height | 1.1 in | Length | 17.2 in |
| Origin | China | Quality | OEM Standard |
| Compatible Equipment | Backhoe Loaders | Operating Temperature | -20°C to 80°C |
| Compatible Model | 310G, 310P, 310J, 310K, 310K EP, 310L, 310L EP, 310SG, 310SJ, 310SK, 310SL, 310SL HL, 310TJ, 310TK TMC, 315 P, 315J, 315SG, 315SK, 315SL, 320 P, 325J, 325SK, 325SL, 410 P, 410G, 410J, 410K, 410L, 410TK TMC, 710 P, 710G, 710J, 710K, 710L | ||
| Application |
AT340155 is specifically designed for the diverse operational demands of John Deere backhoe loaders, with core applications including:
|
||
100% identical dimensions to OEM parts. Pin hole diameter (φ12mm) and mounting spacing (220mm) perfectly match door hinges—no modifications required. The entire replacement takes less than 15 minutes, allowing quick and tool-friendly field setup.
Features a 15μm thick anodized cylinder body coating, a zinc-plated piston rod resistant to 480 hours of salt spray, and labyrinth-type dust seals blocking 98% of mud and dust. Extends service life by over 60% in harsh operations.
Uniform support force locks the door securely at any angle, preventing accidental closure on rough terrains. The integrated damping mechanism reduces impact speed by 50%, extending the life of door hinges and locks.
The optimized single-acting mechanism reduces the manual force required to open the door by 70%, while spring-assisted closing prevents fatigue during operations involving frequent entry and exit.
It is compatible with mainstream sub-models (310G, 310L, 410K, 710L, etc.), excluding custom-modified door units. To verify compatibility: (1) Check your equipment manual or official parts system against part number AT340155. (2) Measure your current cylinder's body diameter (φ30mm) and mounting hole spacing (220mm) to ensure matching specifications.
It is a single-acting pneumatic cylinder with built-in gas spring features. Unlike standard gas springs, it integrates a heavy-duty return spring within a nitrogen gas chamber, requiring no external air supply. It offers high protection sealing (IP65) and supports up to 50,000 compression cycles with a consistent 350N support force.
You only need a standard socket wrench, a torque wrench, and rust-preventative lubricant spray. The pivot pin bolts should be tightened to 15±2 N·m. Incorrect torque may cause door instability (too loose) or thread stripping (too tight) under heavy operating vibrations.
Check two areas first: (1) The door hinges—if the clearance gap exceeds 2mm, the hinges are worn and should be replaced. (2) The old cylinder—if it compresses easily without resistance, it has leaked and failed. Replacing a failed cylinder resolves sagging only if the hinges themselves are structural and aligned.
Common issues include: (1) Minor installation misalignment—slightly loosen the mounting bolts, adjust the path, and retighten. (2) Lack of lubrication on the pivot pins—apply lithium-based grease. (3) A bent piston rod from installation stress—always handle the rod carefully to avoid structural damage.
No, this is a normal physical property of gas-charged components. Nitrogen pressure decreases slightly in sub-zero temperatures. The support performance will recover as the ambient temperature rises, or you can gently warm the cylinder body with a warm cloth to stabilize initial pressure.
