TM 10-4610-241-24
TO 40W4-13-42
4-2.
R.O. PUMP ASSEMBLY POWER END REPAIR (MODELS WPES-10, WPES20, and WPES-30) -
continued.
a.
Disassembly.
(1)
(2)
(3)
Remove crosshead stub deflectors (1).
Remove bolts (2), stub seal caps (3), seals (4) (two per cap) and gasket (5).
Remove crankcase cover screws (6), crankcase cover (7) and gasket (8).
NOTE
Caps are pre-marked 1,2 and 3 to correspond with like marks on connecting rod.
(4)
Disconnect connecting rods (26) from crankshaft (24) by removing the connecting rod bolts (9), caps (10)
and bearings (11). Push rods and crossheads (27) as far as possible into the frame (30) for clearance.
NOTE
Keep shims, if used, together with respective end cap for reassembly. If original
crankshaft and/or bearings are to be reinstalled, shims should provide correct end play.
If these components were replaced, end play adjustment may be required during
assembly.
(5)
Remove bolts (12), end cap ( 13) and shims (14).
(4)
Remove bolt (15), end cap (16) and shims (17).
(7)
Remove seals (18 and 19).
NOTE
(8)
Mark case in relation to crankshaft to ensure proper installation
Remove bearing cup (21), crankshaft (24) and bearings (22 and 23) from pulley end of frame (30) as a
unit.
(9)
(10)
(11)
(12)
Remove bearing cups (20 and 21).
NOTE
To remove bearing cones, use an arbor press or heat cones to 300° F at inner race.
Remove bearing cones (22 and 23).
Remove crossheads (27) and separate from connecting rods (26) by removing crosshead pins (25).
Remove plugs (28) and crankshaft breather (29).
4-2 Change 1
