TM 10-3930-659-34 4-56.  STEERING CYLINDER REPAIR (Con’t). NOTE Piston must be installed with wear ring closest to threaded end of piston rod. 12. Install piston (8) on piston rod (4) with nut (13).  Torque nut to 70 lb.-ft.  (95 N.m). 13. Mark piston (8) at 12 o’clock position over nut (13) and at 1 o’clock position.  Torque nut from 12 o’clock position to 1 o’clock position. 14. petrolatum to two backup rings (10), cap seal (11), and raised areas of steering cylinder barrel (2). CAUTION Ensure  that  alinement  of  steering  cylinder  barrel,  piston,  and  piston  rod  is  maintained  during installation.  Failure to follow this caution could cause seals to be damaged and steering cylinder to malfunction. 15. position    piston    rod    (4)    into    steering    cylinder barrel (2). 16. guide   (3)   into   steering   cylinder   barrel   (2)   and install retaining ring (5). 17. Apply sealing compound to nut (1) and guide (3). 18. Install   nut   (1)   on   steering   cylinder   barrel   (2). Tighten nut until marks made during disassembly are alined and nut is tight. FOLLOW-ON TASKS: • Install steering cylinder (see TM 10-3930-659-20). 4-213