SECTION III. Transfer Assemblies
7-5. TRANSFER ASSEMBLY INTERCHANGEABILITY
The transfer cases within the M113 FOV are physically interchangeable. Some
differences will affect operational capabilities of certain vehicles.
a. M548, M730 and M667:
The transfer cases have no hydraulic oil pumps. If used in the vehicles with a ramp, the
ramps system will not function resulting in a free-fall ramp condition. The fan drive
pulley is driven by ther first intermediate gear rather than the second intermediate
gear. The fan and generator (alternator) drive pullies are single belt drives.