Front Suspensions Flashcards
1
Q
Name the 3 front suspensions offered
A
- Taper Leaf
- Split Progressive leaf
- Front air leaf
2
Q
how many leaves do PB trucks use on taper leaf? Why?
A
- 2 or 3 leaves
- additional leaves would significantly tighten suspension
3
Q
Why are the leaves tapered?
A
Absorb stress uniformly for smoother ride with light loads
4
Q
What ratings are availble with taper leaves?
A
-10k (MD), 12k, 14.6k, 16k, 18k, 20k, 23k pounds. All include shock adsorbers
5
Q
What rating for split progressing springs
A
-only offered in 23k. Lower leaves are only helper springs at light loads - become active under heavier loads
6
Q
What rating is available for air leaf springs
A
12k or 13.2k pounds
7
Q
Benefits of air leaf springs?
A
- smooth ride while maintaining roll stiffness and handling similar to taper leaf-spring
- Reduced vibration to cab/chassis/powertrain
8
Q
what % of load is supported by the 2 air leaf springs per side?
A
75%
