Harrington-hoists-and-cranes CB Hand Chain Hoist User Manual download pdf (Page 28)

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.

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Harrington-hoists-and-cranes CB Hand Chain Hoist User Manual Page 28