SUBSECTION 7B
DRUMSHAFTS
3. Center the shaft in the chain case bore, and block the
ASSEMBLY. To assemble the hoist drumshaft, proceed as
shaft to prevent movement in any direction until bearings
follows (see Figure 7B-1):
(19 and 23) and bearing retainers (16 and 27) have been
installed.
1. Lubricate all the O-rings and seals prior to assembly.
4. Pack seals (18 and 24) with grease and install the seals
2. Place the drum with ratchet end down and pack the cav-
into retainers (16 and 27). The spring side of each seal face
ity between bearings (26 and 31) with multipurpose grease.
the center of the chain case.
NOTE
5. Install bearings (19 and 23) on the shaft, tight against
All ball bearings, new or used, should be packed with
sprockets (21).
multipurpose grease before assembly.
6. Install the shims located beneath retainer (16), and in-
stall both retainers. Apply a coat of No. 2 Permatex to the
3. Tap bearings (26 and 31) into the bore of the drum until it
stud threads before installing nuts (14 and 30) and lock-
is firmly seated against the drum shoulders.
washers (15 and 29).
4. Install grease seal (38) on the upturned face of the drum,
if the seal was removed. Pack the seal with multipurpose
NOTE
grease and be sure the sealing lips face inward.
Before proceeding with installation of the drums,
5. Place pinions (36) on drum (39). Install pins (35) in
check the shaft end play. End play should be between
pinions (36) with the pins turned so flats on the outer end
0.003 to 0.005 inches. If end play is not within these
allow retainer (41) to be installed. Secure with capscrews
limits, add or remove shims beneath retainer (27) as
and lockwasher (42).
necessary.
6. Install bearing (47) and spacer (48) on the elongated hub
of gear (34). Install the other bearing (49) and grease seal
(46) on the opposite end of the drum.
7. Using a suitable hoist, install the assembled drum(s) on
the end of shaft (22).
7. Install the gear, with bearing, spacer, and seal assem-
8. Insert O-rings in the clutch assemblies. Then install
bled, into the bore of the drum. Check bearing (49) for proper
spacer (06) against bearing (10).
seating against the flange of drum (39).
9. Secure drum and clutch assemblies to the shaft wit
8. Generously apply a multipurpose grease to all fittings
washers (04 and 50). lockwashers (03 and 51) and lock-
(40 and 45). Wipe off any excess grease from seal (46).
nuts (02 and 52).
9. If the machine is equipped with planetary lowering, re-
10. Connect hydraulic swivels (01 and 53) to the ends of
peat steps 1 through 8.
the shaft. Remove the caps and plugs from all hydraulic
10. If the machine does not have planetary lowering, then
lines.
proceed to steps 11 through 13.
11. Install and adjust all brake bands on the drumshaft as-
11. Pack cavity between bearings (10 and 12) with grease,
sembly (see Subsection 7C). Also adjust the clutch as de-
then press bearing (12) into the drum. Be sure shielded side
scribed in Subsection 7D.
of the bearing is towards the ratchet side of the drum.
12. Install or connect any other items removed during dis-
12. Slide bearing (10) onto spacer (11), then press the bear-
ing and spacer onto the drum.
assembly.
13. Carefully press seal (07) into the drum.
13. Bleed the hydraulic cylinders to remove any air trap-
ped in the hydraulic lines (see Subection 5A).
INSTALLATION. To install the hoist drumshaft, proceed as
follows (see Figure 7B-1):
1. Place either end of drumshaft (22) into the chain case
THIRD DRUMSHAFT (2100J1132-9)
bore. Let the shaft extend only part way through the chain
REMOVAL. To remove the third drumshaft, proceed as fol-
case, while sprockets (20) are placed on the shaft.Be sure
lows (see Figure 7B-2):
the larger inner diameters of the sprockets, which fit over
split spacers (21), face each other.
1. Disconnect and cap all hydraulic lines to the drumshaft
assembly. Plug all connections where hydraulic lines were
2. Install spacers (21) and slide the sprockets tightly over
removed.
the ends of the spacers.
2. Disconnect and remove the third drum brake (15). See
NOTE
Subsection 7C.
Sprockets (21) are match marked during manufac-
3. Remove hydraulic swivel (01).
ture, and must be installed in matched pairs. Be sure
that both sprockets have the same number stamped
4. Remove nut (02), lockwasher (03) and spacer (04).
at the outer edge. The marked spline on each sprocket
5. Support the drumshaft and remove bearing retainer,
will line up with the match marks on the shaft when
bearing support (16), bearing (05) and sleeve (06).
the sprockets are installed properly.
