TM 55-1680-358-12 & P roller   assembly   (13);   right-hand   inboard   ramp   roller assembly (14); and ramp extension roller assembly (15) for cracks or breaks.  No cracks or breaks are allowed. 3-5.  Special Tools and Equipment.   No special tools are  required  to  maintain  the  Helicopter  Internal  Cargo Handling  System.    All  common  tools  required  can  be found   in   tool   kits   available   to   aircraft   maintenance personnel. 3-6.    Disassembly.    Disassembly  of  the  system  is  not required,    except    as    necessary    for    replacement    of specific components (refer to para 3-7). 3-7.  Repair and Replacement.  The components listed in  Table  3-1  may  be  replaced  as  required,  without  the necessity of removal of any other components.  Refer to Section III for specific part numbers and locations. Table 3-1.  Replaceable Parts Description Location Outboard teeter roller shafts See Section 3 of Chapter 3 Inboard teeter roller shafts See Section 3 of Chapter 3 Transition roller shafts See Section 3 of Chapter 3 Inboard roller shafts See Section 3 of Chapter 3 Ramp extension shafts See Section 3 of Chapter 3 Shafts See Section 3 of Chapter 3 Inboard rollers See Section 3 of Chapter 3 Outboard rollers See Section 3 of Chapter 3 Cotter pins See Section 3 of Chapter 3 Split cotter pins See Section 3 of Chapter 3 3-8.    Tolerances.    There  are  no  wear  tolerances  that apply to the Helicopter Internal Cargo Handling System. Replace parts only if damaged.  (Refer to paragraphs 3- 7 and 3-10.) 3-9.   Torque  Values.    Table  3-2  lists  torque  values  to be applied to fasteners of the Helicopter Internal Cargo Handling System. Table 3-2.  Torque Values Torque in Part Number Description Inch-Lbs 18049 D 555 Special Bolt 100 to 140 AN3-10A Hex Head Bolt 20 to 25 AN3-11A Hex Head Bolt 20 to 25 AN4-5A Hex Head Bolt 50 to 70 AN4-11A Hex Head Bolt 50 to 70 AN4-12A Hex Head Bolt 50 to 70 AN6-13A Hex Head Bolt 160 to 190 AN8-17A Bolt 480 to 690 MS21250-05028 Point Bolt 100 to 140 NAS517-4-11 Countersunk Bolt 50 to 70 NAS517-4-12 Countersunk Bolt 50 to 70 NAS6608-14 Hex Head Bolt 480 to 690 NAS6608-15 Hex Head Bolt 480 to 690 3-10.      Assembly.      Assembly   of   the   system   is   not normally required, except when necessary for replacement     of     specific     components.          (Refer     to paragraph     3-7.)     Reassemble     in     reverse     order     of disassembly. 3-11.  Preservation.  Refer to Section V. 3-2