Harrington Hoists and Cranes CB Hand Chain Hoist - Manual (Page 28)

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9) For 8 ton capacity and under:
Pull the split pin [24] out from the stopper pin [23] and remove the load chain [47] and the stopper
pin from the stopper [22].
10) For 10 ton capacity and above:
Pull the split pin [52] out from the end pin [51] and remove the load chain [47] and the end pin.
Unscrew two socket bolts (with the spring washers) fixing the stoppers [114] and remove the
stoppers.
11) Remove the load chain [47] from the load sheave [14] by pulling the load chain toward the bottom
hook.
12) Remove the split pin [5] from the top pin [4], then remove the top pin and the top hook [1] from the
side Plate A [11] and B [13].
13) Place hoist with gear case side (or nameplate side) up.
14) Unscrew three nuts [31] (with the spring washers [32]) fixing the gear case [29], remove the gear
case from the side plate B [13], and remove the ball bearing [28] from the gear case.
15) Remove two pairs of the gear #2 [27] (1/2T has one pair) from the side plate B [13].
16) Remove the snap ring [26] from the load sheave [14], then the load gear [25] from the load
sheave.
17) Remove the side plate B [13] from the side plate A [11] and then take the ball bearing [16] out
from the side plate B.
18) Remove the guide rollers [20], load sheave (attached to the pinion [17]), stripper [21] and the
anchorage (stopper) [22] (for 10 Ton capacity and above: cross guide [53]) from the side plate A
[11], then remove the ball bearing [15] from the side plate A.
19) Remove the snap ring [19] in the load sheave [14].
20) Remove the pinion [17] and the roller bearing [18] from the load sheave [14].
*NOTE: Hold the load sheave by hand and remove the bearing by tapping the pinion with a rubber
mallet.
21) Pull the split pin [10] out from the slotted nut [9] and remove the slotted nut and chain pin from the
bottom hook [6].
6.4 Hoist Assembly
6.4.1

 Inspect and replace any worn or damaged parts per Table 5-3.
 Secure all nuts, bolts and split pins firmly.
 Replace all split pins and retaining rings.
6.4.2 Assembly
1) Apply grease to the rollers of the roller bearing [18] and insert the pinion [17] (from the side of the
brake screw) into the roller bearing and insert them together into the load sheave [14]. Fix them
with a snap ring [19].
*NOTE: The arrow* on the outer side of the roller bearing should face the gear side. When
inserting, use a screwdriver on the bearing and tap it with a rubber mallet. See Fig. 6-1.

: Always make sure that the snap ring is correctly seated.