f.Install bearing cup (66), gasket (65), plate (63) and screws (62). Install bearing cup (61), shims (60), plate (58)and screws (57).g.To adjust the bearings (68, 71), remove shims (60) until the bearings bind when plates (58 and 63) are tighteneddown; then loosen the plate (58) and bump the eccentric sprocket. Add shims (60) until the bearings are tight butnot binding.h.Install bushings (104) on jackshaft (103). Install seal (102), inner bearing cone (100) and bearing cup (101) inhousing (98).i.Install jackshaft (103) in housing (98), then install outer bearing cone (100), lockwasher (97) and locknut (96).Tighten locknut so that bearings are tight, but not binding. Install gasket (99) on housing.j.Install the housing (98) and jackshaft (103) assembly in mud pump frame.k.Install gasket (93) and housing (92). Install seal (95) in housing (92) over jackshaft.I.Install gasket (85), plate (84) and screws (83). Install seal (90) in retainer (88). Place bearing (94) on jackshaft(103) and squarely in housing (92).m.Place retainer (88),with gasket (89), against bearing (94) and install screws.(87). Tighten screws alternately topush bearing (94) into housing (92) and on jackshaft (103).n.Install chain (56). Screw rod (20) into crosshead (78) and tighten locknut (19).NOTEWhen screwing rod into crosshead, always leave 2 to 3 threads exposed on the rod behind thelocknut when it is locked down.o.Install gasket (18), plate (16), lockwashers (15) and screws (14). Install gasket (55), cover (53) and screws (52).Install plug (51).p.Refer to lubrication instructions and service the mud pump.4-6 MAINTENANCE OF THE SUBDRIVE ASSEMBLY4-6.1 SubdriveAssembly.4-6.1.1 Removal (Figure 4-9)a.Disconnect drive shaft from flange (1). Loosen setscrews (2) and remove flange (1) from PTO shaft. Secure key(3) to shaft with masking tape.b.Disconnect air lines from cylinder (4). Remove cotter pins (5) and pins (6). Remove cylinder (4).c.Engage lever (7) to hold clutch facings in place, when PTO assembly (8) is removed. Loosen screw (9) andremove lever (7).4-46
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