Let Us Handle All of Your Truck Repair and Maintenance Needs

W.W. Friedline provides air brake service for all air brake vehicles. Expert repair and troubleshooting. Air brake, air leak repair, brake valve replacement, air dryer repair, air brake troubleshooting.

W.W. Friedline provides truck and trailer repair services. Give us a call for more information.

W.W. Friedline provides walking beam/support member bushing replacement.

Steering axle repair and rebuild, tie rod end, and drag link end replacement are a specialty at W.W. Friedline.

Leaf spring repair, leaf spring rebuild, leaf spring replacement, spring pin, spring pin bushing, and replacement with fast service.

Camelback Mack suspension repair or rebuild is commonly rebuilt at W.W. Friedline.

Pennsylvania enhanced inspection station for all reconstructed or modified cars, light trucks and trailers up to 10,000 GVWR.

Air suspension rebushed, air suspension repair, air spring replacement, shock replacement.

Truck alignment is a specialty of W.W. Friedline. All front-end alignments and tire alignments are completed with our laser alignment system.

  • We do Pennsylvania state inspections for both light and heavy duty vehicles.

Additional information:

How To Measure A U-Bolt

U-bolt diagrams, regardless of the bend type, are measured in the same manner as shown here. The U-bolt size is given as Diameter(A) x Distance(B) x Leg Length(C).

Additionally, the bend type must also be given to avoid problems in the specifications of semi-round bend shapes.

Forged top U-bolts are best ordered by application and leg length since the type of forging is usually unique to the particular application and must be maintained to provide proper fit and clearance.



Three basic types of bends are used on U-bolts depending on the suspension design and the shape of the mating parts:

  • 1 Round Bend
  • 2 Semi-Round Bend
  • 3 Square Bend

Additionally, each of these bend types may use forged material. This is used primarily where additional clearance is required between the U-bolts and, for example, the frame.