b.
Install gasket (66), retainer (65), lockwashers (64) and screws (63) on case (35). Place the chain (25) in the case
(35) such that it will be behind the sprocket (59) when it is installed.
c.
Install the shaft (50), with assembled bearings and sprocket, in the case (35). See that bearing (62) seats evenly
in retainer (65).
d.
Install the spacer (56) on shaft (50). Install seal (57) in retainer (54). Install gasket (55), retainer (54),
lockwashers (53) and screws (52). Rotate shaft (50) to see that bearings have properly seated and are not
binding.
e.
Install key (51), flange (29), washer (49) and screw (48).
f.
If bushings (47) were removed, install new bushings in clutch bowl (26). Press in one bushing from each end of
clutch bowl shaft, so that the bushings are flush at each end.
g.
Attach hub (43) to sprocket (27) with screws (41), nuts (40) and lockwire (39). Install seal (46) in retainer (45).
h.
Install retainer (45) on shaft of clutch bowl (26). Install key (44) and sprocket (27), with assembled hub, on clutch
bowl. Tighten setscrews (42).
i.
Install spacer (28) and clutch bowl (26) assembly on the mud pump jackshaft.
j.
Place a new gasket (37) on adapter (38). Place case (35) with previously assembled parts on bracket (36) and
against adapter (38). Install screw (34), lockwasher (33), nut (32), lockwashers (31) and screws (30).
k.
Engage chain (25) on sprockets (59,27) and fasten connecting link.
I.
Install gaskets (23), case cover (19), screws (22), lockwashers (21) and nuts (20). Install lockwashers (18) and
screws (17).
m.
Install gaskets (15,16), adapter (14), lockwashers (13), screws (12), lockwashers (11) and screws (10).
n.
Install the clutch assembly (8) on mud pump jackshaft and engage in clutch bowl (26). Connect the clutch air
lines (7) to mud pump jackshaft.
o.
Install fitting (6) and rotor seal (5) in jackshaft and connect air line (4). Connect drive shaft to flange (29).
4-4.2 Mud Pump Drive Clutch.
4-4.2.1 Disassembly.
NOTE
Wear on the clutch driving plates is determined by measuring the travel of the insulator plate
with the clutch engaged (see figure 4-6). This is measured before disassembly. If wear
exceeds allowable limits, replace the driving plates.
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