TM10-3930-660-20 17-8.    CAB HEATER -  REPLACE  (Cont’d) 2. 3. 4. 5. REMOVE NUT (5) , LOCKWASHER (6) , THREE GROUND LEADS (7), AND FLATWASHER (8) FROM LEFT-FRONT MOUNTING STUD OF HEATER (4) . DISCARD LOCKWASHER (6). REMOVE NUTS (9) AND LOCKWASHERS (6) AT THREE REMAINING MOUNTING STUDS OF HEATER (4) . DISCARD LOCKWASHERS (6). TAG AND DISCONNECT TWO ELECTRICAL LEADS (10) OF HEATER (4) AT SPADE CONNECTORS (11) INSIDE CAB. LIFT AND REMOVE HEATER (4) FROM CAB FLOOR. INSTALLATION Apply Loctite 59241 to male threads of connectors (1), elbows (3), and heater (4)  during  installation. 1. 2. 3. 4. 5. 6. POSITION HEATER (4) SO THAT MOUNTING STUDS FIT THROUGH HOLES IN CAB FLOOR. CONNECT TWO ELECTRICAL LEADS (10 ) OF HEATER (4) AT SPADE CONNECTORS (11) INSIDE  CAB,  AS  TAGGED. POSITION NEW FLATWASHER (8), THREE GROUND LEADS (7) , AND NEW LOCKWASHER (6) ON LEFT-FRONT MOUNTING STUD OF HEATER (4) UNDER CAB. SECURE WITH NUT (5) . INSTALL NUTS (9) AND NEW LOCKWASHERS (6) ON THREE REMAINING MOUNTING STUDS OF HEATER (4). INSTALL TWO CONNECTORS (1), CONNECTOR BUSHINGS (2) AND ELBOWS (3) TO PORTS OF  HEATER  (4). FILL ENGINE COOLING SYSTEM WITH COOLANT, PARA. 7-3. 7. CONNECT BATTERIES, PARA. 8-44. 8. INSTALL SEAT, PARA. 16-13. 17-22

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