g.
Remove shaft (24) with bearing (25) from drum (30). It may be necessary to tap on the end of shaft.
h.
Remove screws (26), lockwashers (27) and plate (28). Use a bearing puller to remove bearing (29) from drum.
i.
Discard all seals and replace any worn or damaged parts. Use new seals at assembly.
4-9.2.2 Assembly.
a.
Press bearing (29) into bore of drum (30) so that bearing is flush with drum. Position plate (28) and start screws
(26) with lockwashers (27).
b.
Tighten the screws (26) evenly until plate is seated.
c.
Press bearing (25) on shaft (24). Install o-ring (23) in spacer (22) and install spacer on shaft against bearing.
d.
Install shaft (24) in drum (30) with bearing (25) square in drum bore.
e.
Install seal (21) in plate (20) and position plate over end of shaft. Install screws (18) and lockwashers (19),
tightening evenly.
f.
Install drive ring (17), screws (15) and lockwashers (16) on drum (30).
g.
Install spacer (14), then key (13) in shaft (24). Refer to paragraph 4-9.3.2 and install the clutch assembly (12).
h.
Using a hoist, lift the third drum assembly into position on the drawworks frame.
i.
Press bearings (10) into plates (9) and install spacers (11). Position plates on shaft ends and install screws (8),
lockwashers (7) and nuts (6). Tighten evenly. Remove hoist.
j.
Install key (5) in shaft and install sprocket (4) and tighten setscrew (3). Install and connect chains (2).
k.
Insert end of cable in drum and tighten setscrew (1). Spool cable onto drum. Install covers.
4-9.3 Third Drum Clutch. (Figure 4-25)
4-9.3.1 Removal and Disassembly
a.
Place cone assembly (1) in the fully disengaged position with the clutch control lever. Remove the lever linkage
and lube hose from the collar assembly (2). Remove cone assembly (1).
b.
Remove the screws (3) that secure the clutch cover (4) to the adjusting yoke (5) and remove cover.
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