W01-M58-8683 Firestone Truck Air Suspension Kits 887MBK6 Contitech Air Spring

Brand: GUOMAT

GUOMAT No.: 1T8683

Material: Rubber and Steel

Warranty: 12 Months

Application: For Truck,For Trailer

 

Firestone Part Number: W01-M58-8683 / W01 M58 8683 / W01M588683

Airtech Part Number: 134902 / 3887K

Granning Part Number: 16045

Meritor Part Number: MLF7172

VDL/DAF Part Number: 1141525 / 1 141 525

DAF Part Number: 114525 / 1 141 525

 

 

The diameter of the top cover is 239mm, there are three studs and 1 air hole on the top, the specification of the stud is M10, the center distance between the studs is 134mm and 100mm, the specification of the air hole is M16X1.5, and the center distance between the studs and the air hole is 27mm.

 

The base piston is steel, with a diameter of 192mm and a height of 137mm. The base has a threaded hole with a specification of M16X2.0.

 

The outer diameter of the air spring assembly is 231mm, the maximum height is 427mm, the minimum height is 167mm, and there is a buffer block

 

For DAF(VDL) Suspension Air Spring

0067306	0067504	0377498	0388165
0388167	0392022	1513985	0513983
0529651	0627584	0638148	0659561
0689677	0696229	1141525	1153935
1154761	1276846	1384273	1697678

 

 

1. Air supply: Compressed air from the towing vehicle fills the trailer's air system through a hand-pull hitch.

 

2. Initial inflation: When the trailer is loaded or connected to the towing vehicle, air flows through the height control valve into the air spring, inflating it to a base pressure.

 

3. Sensing height: The height control valve continuously monitors the distance between the trailer frame and the axle through its linkage.

 

4. Maintaining height:
a, Load increase: If the trailer load increases, the frame will sag downward, closer to the axle. The linkage moves the height control valve to the inflate position. This opens a port, allowing more air to flow from the air supply tank into the air spring. The increased air pressure inflates the airbag further, pushing the frame back up to its designated "ride height".
b, Load reduction: If the load is removed, the frame will rise upward, away from the axle. The linkage moves the height control valve to the deflate position. This opens a port, allowing the air in the air spring to exhaust (usually to atmosphere). The reduced air pressure deflates the airbag slightly, stabilizing the frame downward to the specified ride height.

 

5. Stable Ride Height: Once the trailer frame returns to the preset ride height, the linkage centers the height control valve, closing the inflation and deflation ports. At this point, the air springs are maintained at the precise pressure needed to support the current load and keep it at the *correct* height.

 

6. Ride Quality: The compressed air in the airbag acts as a cushion, absorbing road shocks more effectively than a hard leaf spring. This allows the cargo to ride more smoothly and reduces stress on the trailer structure.