Allison Transmission 4000 Series Vocational Models 4000EVS, 4000HS, 4000MH, 4000RDS, 4000SP, 4000TRV, 4500EVS, 4500HS, 4500RDS, 4500SP, 4700EVS, 4700RDS, 4700SP, 4800EVS, 4800SP, B500, T425, T450, T525 complete Service Repair Manual contains assembly, disassembly, electrical troubleshooting manual, diagnostic, hydraulic schematic, periodic maintenance, capacities and specifications. Manual consists of 174 pages.