4-9.4.2 Assembly.
a.
Install the pillowblock assembly (35) on shaft (36). Press on bearings (34) and install spacers (33).
b.
Press bearing (32) in auxiliary drum (23) and bearing (31) in hoisting drum (22). Install drums (22 and 23) on
shaft (36), pushing the drums on until bearings (31 and 32) contact spacers (33).
c.
Lubricate o-rings (30) with petroleum jelly and install them in spacers (29). Install spacers on shaft.
d.
Press seals (28) into plates (27). Install plates and screws (26).
e.
Assemble drive rings (21) to drums (22 and 23) and install screws (20).
f.
Install keys (25) and refer to paragraph 4-9.5.2 to install clutch assemblies (24).
g.
Connect a hoist to drum assembly and lift it into position on the drawworks frame. Position pillowblock to its
mount and install screws (19), lockwashers (18), and nuts (17).
h.
If bearings (15) were removed, press bearings into retainers (14). Install spacers (161, retainers (14), screws
(13), lockwashers (12) and nuts (11).
i.
Place key (10) in shaft and install sprocket (9). Tighten setscrew (8).
j.
Lubricate o-ring (7) with petroleum jelly and install in groove of adapter (6). Install adapter on shaft and install
screws (5).
k.
Install bayonet (4) into shaft bore and install rotor seal (2) and screws (3). Connect air lines to rotor seal.
I.
Remove hoist from drum assembly. Install cable ends in drums and tighten setscrews (1). Spool cable on
drums as necessary. Install covers.
4-9.5 Hoisting and Auxiliary Drum Clutch. (Figure 4-27).
4-9.5.1 Removal.
a.
Disconnect the air hose (1) from the drum shaft.
b.
Remove screws (2), holding plate (3), air tube (4) and pressure plate (5).
c.
Loosen setscrew (6) in clutch hub and remove the clutch assembly from the drum shaft.
4-9.5.2 Installation.
a.
Slide the clutch assembly (hub with assembled plates and discs) into correct position on the shaft, ensuring that
the teeth of the friction discs (7) are registered in the teeth of the driving ring installed on drum.
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