HA Series Suspensions (1987-1995)
- **Past Production**: These suspensions were produced until 1995 and were then replaced by the HAS Series.
- **Models**: Included Mack AL-360, AL-400, and AL-460 suspensions.
Single Axle Applications:
- **Models**: HA-180, HA-200, and HA-230.
Tandem Axle Applications:
- **Models**: HA-360, HA-400, and HA-460.
Spring Details:
- **Old Style Springs**: Used a pad on top of the spring.
- **New Style Springs**: Recommended for replacement. When replacing old style springs, use new style springs along with 338-1139 (49337-000) U-bolt plate.
Spring Specifications:
- **Spring Holes**: Each of these 6 springs has 2 end holes.
- **End Hole Spacing**: The spacing between the end holes is 8 inches.
Replacement Note:
- When replacing old style springs, ensure to use new style springs and the specified U-bolt plate for compatibility and proper fitment.
This information outlines the specifications and replacement recommendations for HA Series Suspensions from the specified time frame.