As mentioned earlier, the older M88A1 configuration has a vehicle recovery limit of 56 Tons, M88A1
which requires two vehicles to work together to recover the M1 Main Battle Tank at 70+ Tons. Also, many parts are becoming obsolete or can only be procured as a refurbished part, so life cycle support and sustainment of the older M88A1 can be an issue.
To further show the differences of the upgraded M88A2 HERCULES to the older M88A1, figures 2 through 4 provide the detailed specs and major differences.