list the nomenclature, model and manufacturer's serial number (not the USA number) for the vehicle concerned. Remember, once installed the filter unit stays with the vehicle all the way back to rebuild. THE MASKS On your requests for masks to go with the filter units installed in your CV's, you must provide exception data as to the vehicle's model number and the type of radio it uses (FM or AM). The M25 and M25AI tank masks are for The M14A1 or M14A2 tank masks work use with FM radio sets. with the AM sets. The M14A2 mask, however, can be used with the FM radios when its mike is changed like it says in Ch 2, TM 3-4240-223-15, para 38.1. After the mike swap it becomes an M25 mask. TANK WHEEL TORQUE Without wheels your track vehicle won't roll. So why is that news? Because roadwheels and compensat- ing idler wheels for some tracks are in real short supply. So what can you do about it? You can get the longest possible life our of your roadwheels and compensat- ing idlers by making sure all wheel re- taining nuts are torqued as tight as the TM's say. TORQUE M48 M48I ad 48,I aks- 80t 420 poun fee toqeo he e ini nuts.. RIGHT Besides keeping your wheel retaining nuts right you can help the supply prob- lem by being a wheeler dealer and turn- ing in to supply all unserviceable- repairable wheels on the shortage list for depot rebuild. 19