Natural Rubber Air Bag Contitech Air Ride Suspension System Spare Parts Goodyear 3B12-329
| Part Number | 3B12-329 |
OEM Number | Fire stone W01-358-7995/38 |
| Contitech FT 330-29 547/64573 | |
| Goodyear 3B12-329 | |
| Triangle 4757/4703 | |
| Watson&Chalin AS-0048-1F | |
| Euclid/Meritor After market E-FS7995 | |
| Working temperature | -40°C bis +70°C |
| Failure testing | ≥3 millions |
| Top Cover Plate Diameter | 231mm |
| Bottom Cover Plate Diameter | 231mm |
| Gas Hole / Air inlet | 1/4NPTF |
| Rubber Bellows MAX Diameter | 330mm |
| The Working Stroke | MAX 460 mm to MIN 130 mm |
Note:Cross references are not a guarantee that the part will fit any specific application.Check all information available before relying on a cross reference to make a purchase.
Goodyear Air Springs
Manufacturer:Goodyear
Manufacturer P/N:3B12-329
This is a bellows style Goodyear air spring. The bellows air springs have one, two, or three convolutions in the flexible member. This triple convoluted air bag is typically found on lift springs or axles for trucks and trailers, as an air ride spring, and also as an actuator or insulator on industrial and commercial applications. The specifications will vary on your 3B12-329, but triple convoluted Goodyear bags are found in crimped design as well as sleeve type bellows. They will offer similar characteristics and functionality but the sleeve type has the end retainers permanently attached by pinching the flexmember between the end retainers and external crimp rings.
SUPER-CUSHION AIR SPRINGS FOR TRUCKS, TRAILERS, AND BUSES
Super-Cushion air springs for trucks, trailers buses, and cab & seat springs protect cargo, provide constant-level hauling, and deliver long, trouble-free service. Super-Cushion air springs give your trucks, trailers and buses a new high in productivity and long life. They offer a quiet, cushioned ride. Truck, trailer and bus bodies last longer than with steel springs because there is less vibration. The driver rides in greater comfort, becomes less fatigued and stays more alert. Plus cargo has better protection from shock and vibration. Whenever you want to add an axle, Super-Cushion air springs fit right in. Super-Cushion air springs, when used with leveling valves, also maintain consistent trim regardless of the load. That means clearance heights remain constant,and that trailer floors are flush with loading dock floors for ease of loading and unloading. For driver comfort, load cushioning, and long life for your trucks, trailers, bus, and cab and seat springs specify Goodyear Engineered Products Super-Cushion air springs.
Warning and Tips
Maintenance of the air springs, Vehicle Check-List
1.Check the air lines and devices of leakage and that they turns freely.
2.Check the bellows bearing for damage, correct fastening, deformation, sharp edges.
3.Check the shock absorbers for operation and impermeability as well as tightness and bearing.
4. Periodically, check nuts and bolts for proper torque. For specific recommendations see manufacturer's manual.
5. Check axle suspension, trailing arms and rods for wear.
6. Check height control valve to see that it is functioning properly. A properly maintained valve will save unneeded maintenance expense.
7.Routine inspection of all of the above according to manufacturer's instructions, will extend the life of your vehicle and reduce your overall maintenance expense.
Air Spring Installation
Before you start installing air springs, make sure you have all the necessary tools and equipment to perform the repair safely.
Familiarize yourself with the suspension on which you are performing the repair by reviewing the manufacturers service guide.
If you are in doubt about something, ask for assistance from a qualified suspension specialist, the suspension manufacturer or the air spring manufacturer; This can save you a lot of time and aggravation later in the job.
Important tips to remember when installing a new unit
1.Check levelling valve, linkage and transmission parts for wear and damage and if necessary replace the damaged parts.
2.Check that the shock absorber for leakages and take a shock absorber test. A defective shock absorber must be replaced.
3.Once the air lines are disconnected, check their entire length for cracks or other damage. Replace worn parts.
4.With the air spring removed, other parts of the air suspension become more accessible. Check for wear or damage of the frame hangers, trailing arm bushings, torque rods, the trailing arms and the air spring mounts. When it is necessary, also replace parts.
5.Check bearing for air spring bellow for external damage, deformation, sharp edges and correct fastening.
6.Before installing the new unit, clean the air spring mounting plates to ensure proper attachment to the suspension.
7.Always use new attaching bolts for the installation and observe the tightening torques. Never use old bolts, because these can fall out.
8.Check the linkage of the levelling valve to see that it is functioning properly. Under load, the linkage should move from the neutral position up to the intake position. This lets air into the springs, which brings the arm back to the neutral position. This lets air into the springs, which brings the arm back to the neutral position. That opens the exhaust valve, allowing air to escape until the arm returns to the neutral position. Then check the driving level.
