From Halopedia, the Halo wiki
A Banished repair bay is a piece of machinery used by the Banished to repair vehicles and other equipment.
During the Installation 07 conflict, the Banished had two repair bays in operation at Ransom Keep and another four at the Forge of Teash. In addition to using these machines to repair vehicles, the Banished also used the repair bays to maintain the excavation equipment utilized at Site Novem and other dig sites. When John-117 attacked these two outposts, The Weapon directed him to target the repair bays in order to cripple the Banished's excavation efforts on Zeta Halo.
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