TM9-2815-202-34 4-10.  AIR   BOX   HEATER   REPLACEMENT This  task  covers: a.  Removal b.  Disassembly c d.  Assembly e.  Test/Adjustment f. Cleaning/Inspection Installation INITIAL    SETUP MODELS 7083-7395 7083-7396 TOOLS  AND  SPECIAL  TOOLS General mechanics tool kit (App B, Item 96) Torque wrench (App B, Item 101) Test lead (App D, Item 1) MANDATORY   REPLACEMENT   PARTS 2 Lockwashers (App F, Item 90) 4 Lockwashers (App F, Item 89) 1 LockWasher (App F, Item 91 ) 2 LockWashers (App F, Item 92) 6 Lockwashers (App F, Item 93) EXPENDABLE/DURABLE   SUPPLIES MANDATORY   REPLACEMENT   PARTS Cleaning solvent (App C, Item 10) 1 Vane set (App F, Item 159) EQUIPMENT   CONDITION 1 Gasket (App F, Item 68) Para  Description 4-8 Left  lifting  bracket  removed 4-9 Crossover  tubes  removed AIR   PUMP a.   Removal (1)  Disconnect  hose  (1)  from  check  valve  (2). (2) Disconnect hose (3) from elbow (4) on air pump (5). NOTE Only model 7083-7396 has clamp (6) on hose (3) and uses an elbow (7) instead of an adapter (7). (3) (4) (5) (6) (7) Remove screw assembly (8) and clamp (6) from governor cover. If necessary, remove adapter (7) and clamp from hose (3). Remove hose and reinstall screw assembly on cover. Remove  nuts  (9  and  10)  securing  wiring  harness  leads(11  and  12)  to  terminals  (13  and  14) on air pump (5). Disconnect leads from pump. Remove bolt (15), Iockwasher (16), flat washer (17), air pump clamp (18), cushion (19), and air pump (5) from bracket (20). Discard Iockwasher. Remove hose (21 ) and check valve (2) from adapter (22). Remove hose from check valve. Remove adapter (22) from elbow (23). 4-22