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TD09232E
1. Remove snap ring (PS056011P) from shaft (019555P).
2. Push "Release Key" (P3090346P) in the indented area of the handle in the direction marked "Release" to
disengage the working dog from the un- loader plate and lift handle (P3090816P) off the shaft. This will
expose the mechanism.
3. The working dog in the Handle Assembly may be removed by first removing screw (056013P) and washer
(056014P) from the post supporting the dog. Torsion spring (056010P) can be removed, after the dog has
been removed, for re-placement, if needed.
4. When reassembling working dog and spring (056010P), place the short leg of the spring to the pin on the dog
on the side facing handle (P3090816P), and the long leg of the spring against the handle housing (P3090816P).
5. If it is necessary to replace the release key (P3090346P), press the dog assembly (E3090354P) out of handle
(P3090816P) with a careful and steady force. In replacing the dog assembly, be certain it is pressed in straight,
using an even pressure, and that release key (P3090346P) is in position before pressing post into handle.
6. The holding dog in the housing can be removed by unhooking the two extension springs from the unloader plate
and from screw (056163P) in the housing. Remove snap ring (PS056011P) and slide unloader plate off
shaft (019555P), after which dog can be lifted off post (056016P).
7. After unloader plate has been removed, ratchet (019556P) may be slipped off the shaft. Then woodruff key
(056507P) may be removed. Shaft (019555P) with pinion (019557P) intact may be slipped out of bearing bore.
8. In replacing the holding dog, make sure the pin which is permanently secured to the dog is faced to the
outside, so that it projects through the unloader plate when it is replaced on the shaft.
9. To remove the ratchet gear and chain socket, remove the ring (056871P) and free the end of the chain, this will
allow the chain to be "pulled" through the housing (on reassembly, ensure the welded side of chain is away from
chain socket). Then by removing interlocking snap ring (PS056011P), the chain socket with gear (019549P) will
slide out in one piece.
10. Hook (P3090866P) may be removed from the housing after pressing groove pin (P0011465P) from the nut
(P0010757P) and unscrewing hook from nut.
11. The shift key (P3090043P) can be removed by backing out the Driv-Lok pin (059036P) holding the shift
key finger (019296P) to the shift key.
12. The oilite bearing (058613P, 058614P) can be removed and replaced in the accepted manner of pressing
them out and pressing the new ones in.
Disassembly Instructions for Model 4012
To best visualize these instructions, study and refer to the exploded view of the hoist and parts list.
