TM 55-4920-328-13 Section XIV.  T73 POWER ABSORPTION SYSTEM MAINTENANCE 6-54.  Scope. Maintenance  of  the  T73  power  absorption  system consists   of   cleaning,   inspection,   and   replacement   of certain parts of the water brake assembly and the torque element assembly at 250 hours of operation. NOTE At  1,000  hours  of  operation,  the water   brake   assembly   must   be overhauled by depot level personnel. 6-56.  T73 Water Brake Assembly Maintenance. Use figure 6-15 as a guide.  Proceed as follows: a. Place  the  water  brake  assembly  on  a  suitable fixture  and  allow  the  residual  water  to  drain  from  the unit. b. Remove     thermocouple     assemblies     (6)     and adapters.      Inspect   for   broken   connectors,   corroded electrical  pins  and  probe,  frayed  cable  and  cracked  or corroded adapter.  Replace thermocouple assembly and adapter if found defective. c. Inspect  check  valve  (3)  and  valved  nipples  (5, 8,  11,  21)  for  dents,  cracks,  sharp  bends,  evidence  of leakage    and    thread    damage.        Replace    if    found defective. d. Inspect   all   remaining   components,   bushings, reducers,   nipples,   couplings   and   adapters   for   dents, cracks,, and corrosion.  Replace if found to be defective. e. Re-install   all   components   in   accordance   with Figure 6-15. 6-56.  T73 Torque Element Maintenance. If   the   torque   element   assembly   malfunctions   or cannot be brought into calibration, proceed as follows: a. Remove the compound from the potentiometers and clean with Specification BB-F-1421 freon. b. Check  the  continuity  through  the  signal  cable assembly   and   potentiometers,   using   figure   6-9   as   a guide. c. If  the  torque  element  signal  cable  is  defective, replace the cable or connector, as required.  Proceed as follows: (1) Disconnect    the    cable    from    the    torque element body. (2) Remove the connector from the v cable. (3) Procure   a   20-foot   length   of   WH67896 cable (Schaevitz Bytrex, 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    replacement    is required. (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. KEY TO FIGURE 6-15. 1.  Adapter Assembly 2.  Reducer 3.  Check Valve 4.  Nipple 5.  Valved Nipple 6.  Thermocouple Assembly 7.  Thermocouple Adapter 8.  Valved Nipple 9.  Bushing 10.  Nipple 11.  Valved Nipple 12.  Bushing 13.  Nipple 14.  Cap 15.  Nipple 16.  Coupling Half 17.  Coupling Half 18.  Coupling Half 19.  Nipple 20.  Bushing 21.  Valved Nipple 22.  Coupling Half 23.  Bushing 24.  Manifold Adapter 25.  Washer 26.  Bolt 27.  Packing 28.  Bearing Assembly 29.  Washer 30.  Bolt 31.  Packing 32.  Rear Housing 33.  Washer 34.  Bolt 6-40