TM 10-3930-669-20 16-8.    CAB HEATER REPLACEMENT/REPAIR (CONT). (14)  Install fan motor assembly (24) on fan housing (20) with clamp (22), rubber liner (23), and four screws (21). (15)  Install  two  outer  air  rams  (19)  and  fan  covers (18) on fan housing (20) with eight screws (17). (16)  Connect connector (16). (17)  Connect wire (15) on heater assembly (12). e. Installation. (1) Install heater assembly (12) and two wires (14) in heater housing (3) with three screws (13). (2) Connect    two    wires    (10    and    11)    to    heater assembly (12). (3) Connect  oil  line  (8)  to  heater  oil  inlet  (9)  and tighten fitting (7). (4) Connect oil line (5) to heater oil outlet (6) and tighten fitting (4). 16-26