TM 55-4920-328-13 Section X.  T55 TURBOSHAFT POWER ABSORPTION SYSTEM MAINTENANCE 6-40.  Scope. Maintenance  of  the  T55  power  absorption  system consists   of   cleaning,   inspection,   and   replacement   of component   parts   of   the   water   brake   assembly   and torque element after 500 hours of operation. Note At  1,000  hours  of  operation,  the water   brake   assembly   must   be overhauled by depot level personnel. 6-41.        T55    Turboshaft    Water    Brake    Assembly Maintenance. Proceed as follows: a. Remove  all  external  components  called  out  in Figure 6-11. b. Inspect thermocouple assemblies (3, 16 and 43) for  broken  connectors,  corroded  electrical  pins,  frayed cables, damaged mounting connectors and damaged or corroded  probes.    Replace  thermocouple  assembly  if found to be defective. c. Inspect tube assemblies (20, 23, 33 and 38) for dents,    cracks,    sharp    bends,    corrosion    and    thread damage.        Replace    tube    assembly    if    found    to    be defective. d. Inspect valves (11 and 39) for dents, corrosion, leakage and damaged threads.  Replace valve if found to be defective. e. Inspect all remaining components; tees, unions, nipples, plugs, etc., for cracks, dents, leakage, corrosion and thread damage. Replace any defective components. f. Re-install all components removed in step "a" 6-42.  T55 Turboshaft Torque Element Maintenance. Proceed as follows: a. Remove the compound from the potentiometers and clean with freon (Specification BBF-1421). b. Check  the  continuity  through  the  signal  cable assembly and the potentiometers, using figure 6-9 as a guide. c. If  the  torque  element  signal  cable  assembly  is defective, replace as follows: (1) Disconnect    the    cable    from    the    torque element body. (2) Remove the connector from the cable. (3) Procure   a   20-foot   length   of   WH67896 cable (Schaevitz Bytex, Inc, Waltham, Massachusetts). (4) Solder  the  leads  to  the  connector  using Specification QQ-S-571, 60/40 resin core solder.  Use a new MS3106B-14S-5P connector if damage is noted at removal. (5) Connect  the  lead  shield  to  the  connector clamp. (6) Connect   the   opposite   end   of   the   cable assembly  to  the  torque  element  terminals.    (See  figure 6-9). (7) Apply    DC-4    compound    (Dow    Corning Corp,     Midland,     Michigan)     to     the     torque     element terminals. 6-30