TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 cover (41) and new gasket (30) to water pump    body    (15).        Check    clearance between   impeller   vanes   and   cover;   it should be 0.020 to 0.040 inch (0.051 to 1.01 mm). b. Water Pump With Idler Assembly. (1)   Disassembly.  Prior to disassembly, remove the    water    pump    and    idler    assembly    in accordance    with    the    Operator/Crew    and Organizational  manual.    Refer  to  figure  13- 30. (a)   Remove screws (3) and washers (4) and separate cover (21) from the body (52). Remove and discard gasket (17). (b)   With  a  suitable  puller,  remove  impeller (11) and pulley (6).  Remove front water pump oil seal (7). (c)   Support    water    pump    body    (52)    on impeller   end.      Press   the   water   pump shaft   (16)   and   bearing   assembly   (8) from  the  body  by  applying  pressure  to the pulley end of the shaft. (d)   Remove  bushing  (14),  gasket  (15)  and water   pump   seal   (13)   from   the   shaft (16). (e)   Remove    the    inner    race    (cone    and bearing)  of  the  roller  bearing  assembly (8) with a suitable puller. (f) Remove  the  two  bearing  races  of  the roller   bearing   assembly   (8)   from   the water  pump  body  (52)  with  a  suitable puller. CAUTION Exercise care when removing the retaining   ring.     Do   not   damage   pump body. (g)   Remove  large  retaining  ring  of  bearing assembly    (8)    from    the    water    pump body. (h)   Remove   screw   (22)   and   washer   (23) and take off idler pulley cover (24) and gasket (25). (i) Remove locknut (26). (j) Remove   idler   pulley   (29)   and   bearing assembly (28) from idler shaft (31). (k)   Remove rear oil seal (30) from the idler pulley (29). (l) Remove   inner   bearing   races   (cones) from the pulley. (m) With a suitable puller or punch, remove the    bearing    races    (cups)    from    the pulley. CAUTION Exercise care when removing the retaining   ring.       Do   not   damage   idler pulley. (n)   Remove     the     bearing     retaining     ring inside the idler pulley. (o)   Remove    the    retaining    ring    (37)    and washer (38) from the pivot shaft (35). (p)   Remove the pivot arm bushing (40) and O-rings (36) from the shaft. (2)   Repair.  Proceed as follows: (a)   Inspect  pump  body  and  idler  bearings for   rough   or   worn   races,   or   damaged shield.  Replace if necessary. (b)   Inspect impeller and cover for cracks or corrosion.  Replace if necessary. (c)   Measure  internal  clearances  and  press fits in accordance with tabulated 13-59