TM9-2815-202-34 4-31.   OIL   PRESSURE   REGULATOR   AND   RELIEF   VALVE   REPLACEMENT l This  task  covers: a.  Removal b.  Repair c.  -Installation l INITIAL    SETUP MODELS n All TOOLS  AND  SPECIAL  TOOLS General mechanics tool kit  (App B, Item 96) Torque wrench  (App B, Item  101) MANDATORY   REPLACEMENT   PARTS 1 Gasket  (App F,ltem47) 2 Gaskets (App F,ltem  33) 6 LockWashers (App F, Item 93) EXPENDABLE/DURABLE    SUPPLIES Engine oil (App C, Item 16) Fuel oii(App  C,ltem 21) Crocus cloth  (App C, Item 12) EQUIPMENT  CONDITION Para   Description 4-20  Oil  pan  removed l a.   Removal (1) Oilpressure   regulator  valve (a) Remove Wobolts  (l), Wolockwashers  (2), and Woflatwashers  (3)secuting  oil pressure  regulator  valve  (4)  to  cylinder  block  (5). (b) TapreguIator valve body lightly  toloosen  it from gasket (6). Remove regulator and discard  gasket. $?!-, ,—, (2) Oilpressure  relief valve (a) Remove four bolts  (7)and four Iockwashers  (8) securing oil pressure relief valve (9) to cylinder block(5) and oil pump (lo). (b) Taprelief valve bodylightlyto Ioosenit  from gaskets(ll  and 12). Remove relief valve and discard  gaskets. Change 1 4-121