Front Suspensions

Question 1

Name the 3 front suspensions offered

Answer 1

• Taper Leaf
• Split Progressive leaf
• Front air leaf

Question 2

how many leaves do PB trucks use on taper leaf? Why?

Answer 2

• 2 or 3 leaves

- additional leaves would significantly tighten suspension

Question 3

Why are the leaves tapered?

Answer 3

Absorb stress uniformly for smoother ride with light loads

Question 4

What ratings are availble with taper leaves?

Answer 4

-10k (MD), 12k, 14.6k, 16k, 18k, 20k, 23k pounds. All include shock adsorbers

Question 5

What rating for split progressing springs

Answer 5

-only offered in 23k. Lower leaves are only helper springs at light loads - become active under heavier loads

Question 6

What rating is available for air leaf springs

Answer 6

12k or 13.2k pounds

Question 7

Benefits of air leaf springs?

Answer 7

• smooth ride while maintaining roll stiffness and handling similar to taper leaf-spring
• Reduced vibration to cab/chassis/powertrain

Question 8

what % of load is supported by the 2 air leaf springs per side?

Answer 8

75%