Allison-AT-MT-HT-Transmission-Operators-用户操作说明书手册.pdf,Operator’s Manual AT, MT, HT Series On-Highway Transmission OM1334EN MT4108EN OM1334E Operator’s Manual Allison Transmission AT 540 AT 542(N)(R)(NFE) AT 543 AT 545(N)(R) AT 1542P AT 1545P(