FIG.  4.  CYLINDERS AND VALVES - 15 HP SINGLE STAGE - 25 HP TWO STAGE Key Part number Foot Qty Description Key Part number Foot Qty Description Key Part number Foot Qty Description No. note Req’d No. note Req’d No. note Req’d 1    0147 1326 03 ........ 4 ........ Bolt 19    1503 0233 00 ........ 2 ........ Washer 33 0101 4260 00 1) ..... 1 ........ Pin 2    1503 0187 00 ........ 2 ........ Washer 20    1503 1229 00 ........ 1 ........ Cover 34 1503 0160 00 1) ..... 1 ........ Delivery disc 3    1503 0198 00 ........ 4 ........ Joint 21    0653 9038 00 ........ 2 ........ Gasket 1503 0158 00 2) ..... 1 ........ Delivery disc 4    1503 0210 00 ........ 4 ........ Washer 22    0686 4201 03 ........ 2 ........ Plug 35 1503 1231 00 1) ..... 1 ........ Valve guard 5    0291 1110 00 ........ 4 ........ Locknut 23    0147 1388 03 ........ 16 ...... Bolt 1503 0075 00 2) ..... 1 ........ Valve guard -    1503 0376 80 ........ 1 ........ Cylinder, compl. 24    0301 2344 00 ........ 40 ...... Washer 36 0663 9812 00 1) ..... 1 ........ O-ring 6    * * * ............. ........ 1 ........ Cylinder 25    0266 2111 00 ........ 24 ...... Nut 37 1503 1237 00 2) ..... 1 ........ Radial seal --    - - -............ 3) ..... 1 ........ Piston, compl. 26    1503 0178 00 ........ 2 ........ Gasket 38 1503 1226 00 1) ..... 1 ........ Suction cap 7    0101 1366 00 ........ 4 ........ Pin 27    0246 1246 02 ........ 8 ........ Stud 39 1503 0329 00 2) ..... 1 ........ Suction cap 8    1503 0249 00 ........ 3 ........ Cord -    1503 0376 80 1) ..... 1 ........ Cylinder compl. 40 1503 1323 00 1) ..... 1 ........ Radial seal 9    1503 0159 00 ........ 1 ........ Suction disc 1503 0377 80 2) ..... 1 ........ Cylinder, compl. 41 1503 1236 00 2) ..... 1 ........ Axial seal 10    1503 0017 00 ........ 1 ........ Valve seat 28    * * * ............. ........ 1 ........ Cylinder 42 1503 1228 00 1) ..... 1 ........ Outlet cap 11    0101 4260 00 ........ 1 ........ Pin -    - - -............ 3) ..... 1 ........ Piston 43 1503 0330 00 2) ..... 1 ........ Outlet cap 12    1503 0160 00 ........ 1 ........ Delivery disc 29    0101 1366 00 1) ..... 4 ........ Pin 44 1503 1229 00 1) ..... 1 ........ Cover 13    1503 1231 00 ........ 1 ........ Valve guard 0101 1364 00 2) ..... 4 ........ Pin 45 1503 0331 00 2) ..... 1 ........ Cover 14    1503 0166 00 ........ 2 ........ Spring 30    1503 0249 00 1) ..... 3 ........ Cord 15    0663 9812 00 ........ 1 ........ O-ring 1503 0248 00 2) ..... 3 ........ Cord 16    1503 1226 00 ........ 1 ........ Suction cap 31    1503 0159 00 1) ..... 1 ........ Suction disc 17    1503 1323 00 2) ..... 1 ........ Radial seat 1503 0157 00 2) ..... 1 ........ Suction disc 1) 15 HP single stage 0663 7140 00 1) ..... 1 ........ O-ring 32    1503 0017 00 1) ..... 1 ........ Valve seat 2) 25 HP two stage 18    1503 1227 00 ........ 1 ........ Outlet cap 1503 0028 00 2) ..... 1 ........ Valve seat 3) See 'Crank assembly' .../... .../... 16