3-37 Nylon bearing brackets Winch shaft stub Winch shaft sleeve Winch  sprocket 18 Capscrews 11 Nuts and lockwashers 12 Left end winch shaft Shaft sleeve with drums Winch  drums 15 Right end winch shaft 16 Stud end of toggle pin 17 Toggle pin assembly Figure 3-31—Continued. Cable Drum socket Machine screws and lockwashers Cable clamp Winch drum hole 3-20.   Doorpost   Assembly a. General.  The repair of the doorpost as- sembly  is  limited  to  the  replacement  of  the  door control  arm,  diagonal  door  control  arm,  toggle pin  assemblies,  switchbox  bracket,  door  control arm  lock,  chain  bolt  control  rod,  rod  retainer, doorpost  top  assembly,  and  post  assembly. b.  Door  Control  Arm  Removal  and  Installa- tion. (1) Close the vehicle door (para 2-4). (2)  Untie  and  remove  the  door  control arm  line  (7,  fig.  3-30)  from  the  door  control arm plug (1). (3)  Remove  the  toggle  pin  (8)  that  se- cures  the  diagonal  door  control  arm  (9)  to  the door control arm. (4)  Pull  the  door  control  arm  from  the doorpost gusset (2). (5)   Tie   the   door   control   arm   line   to   the plug  in  replacement  door  control  arm, (6) Insert the door control arm into the doorpost  gusset. (7) Attach the diagonal door control arm to the door control arm with the toggle pin and chain  assembly. c. Diagonal  Door  Control  Arm  Removal  and Installation. (1)  Remove  the  toggle  pin  (8)  that  se- cures  the  diagonal  door  control  arm  (9)  to  the door  control  arm  (1). (2)  Remove  the  toggle  pin  that  secures the  diagonal  door  control  arm  to  the  doorpost top assembly bracket (5) and remove the di- agonal  door  control  arm. (3) Secure either end of the replacement diagonal  door  control  arm  to  the  doorpost bracket with the toggle pin and chain assembly. (4) Secure the other end of the diagonal door  control  arm  to  the  door  control  arm  with the  toggle  pin  and  chain  assembly. d.  Toggle  Pin  and  Chain  Assembly  Removal and  Installation. (1) Remove the toggle pin (8, fig. 3-30) that secures the diagonal door control arm (9) to  the  doorpost  top  assembly  bracket  (5)  or door  control  arm  (1). (2) Cut the link attaching the assembly. Remove the toggle pin, chain, and link. (3)  Insert  the  S-hook  in  the  link  of  the replacement  assembly  and  in  the  door  control arm or doorpost top assembly bracket. Close the  S-hook  ends. (4) Insert the toggle pin in the appropri- ate  bracket  and  diagonal  door  control  arm connector  and  lock  the  toggle. e. Switchbox  Bracket  Removal  and  Installa- tion. (1)  Lift   the   circuit   breaker   from   the bracket  (12,  fig.  3-30). (2)  Remove  the  screws  (14)  from  the door  control  arm  lock  (13  )  and  remove  the switchbox   bracket. (3)  Install  the  switchbox  bracket  in  re- verse order of removal. f. Door Control Arm Lock Removal and In- stallation. (1)  Raise  the  vehicle  door  (para  2-4). (2)  Remove  the  nut  (18,  fig.  3-30)  and capscrew (17) that secure the door control arm lock  (13)  to  the  doorpost  (6).  Remove  the  door control arm lock. (3)  Install  the  door  control  arm  lock  in reverse  order  of  removal. g. Chain  Bolt  Control  Rod  Removal  and  In- stallation. (1)  Remove  the  screws  (16,  fig.  3-30) that secure the rod retainer (15) to the door- post (6) and remove the rod retainer. (2) Open the loop of the rod (11) that is connected to the chain bolt (10) and remove the  rod  from  the  chain  bolt. (3) Install the chain bolt rod in reverse order  of  removal.