(4). Screw gauge (42) into head (43).
e.
Installation.
(1). Install the assembled regulator (34) on bracket (35) and secure with nut (41).
(2). Position knob (39) on stem (46) and install roll pin (36).
(3). Install lock (38) and screw (37).
(4). Position the regulator (34) and bracket (35) in the cabinet and install screws (33), lockwashers (32) and
nuts (31).
(5). Install and tighten connection blocks (9 and 13).
4-4 MAINTENANCE OF THE MUD PUMP DRIVE
4-4.1 Mud Pump Drive Assembly. (Figure 4-5)
4-4.1.1 Removal and Disassembly.
a.
Remove screws (1), lockwashers (2) and clutch guard (3).
b.
Disconnect air line (4) from rotor seal (5). Remove rotor seal from mud pump jackshaft. Remove grease fitting
(6).
c. Disconnect clutch air lines (7) from mud pump jackshaft. Pull clutch assembly (8) from jackshaft. Refer to
paragraph 4-4.2 for maintenance of clutch assembly.
d.
Remove plug (9) and drain lubricant.
e.
Remove screws (10), lockwashers (11),screws (12), lockwashers (13), adapter (14) and gaskets (15, 16).
f. Remove screws (17) and lockwashers (18) that fasten to case cover (19). Remove nuts (20), lockwashers (21)
and screws (22). Separate case cover (19) from case and remove gaskets (23). Leave filler cap (24) installed.
g.
Disconnect drive chain (25) at the cotter pin type connector link.
h.
Remove clutch bowl (26), with sprocket (27) and associated parts assembled, from the mud pump jackshaft.
Remove spacer (28).
i. Disconnect drive shaft from u-joint flange (29). Remove screws (30), lockwashers (31), nut (32), lockwasher
(33), and screw (34). Lift the case (35), with assembled parts, from mounting bracket (36).
j. Remove gasket (37) from adapter (38). The adapter (38) shall remain installed on the mud pump.
k. To disassemble parts assembled to clutch bowl (26), remove lockwire (39), nuts (40), screws (41), and sprocket
(27).
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