KTI LX1B Manuel utilisateur
LX1-1.1.2 1 / 14
KTI
KITO Technical Information
LX1 Maintenance Manual for Model LX1B Edition: D 03.06
Table of Contents
1. GENERAL............................................................................................................................................2
2. DISASSEMBLY, ASSEMBLY AND ADJUSTMENT.............................................................................2
3. COMPONENTS....................................................................................................................................3
4. HOIST DISASSEMBLY........................................................................................................................4
5. HOIST ASSEMBLY..............................................................................................................................4
6. PREOPERATIONAL CHECKS..........................................................................................................14
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1. General
Improper maintenance may result in death or serious injuries. Ensure to have only trained or
competent people maintain the hoist, or contact your dealer.
CAUTION
Do NOT lubricate the friction plate of the mechanical brake.
Always ensure that the load chain, the chain pin, the top pin, the hook necks, the hook latches
and the select lever are well oiled. Refer to Figure 1-1.
Figure 1-1 Schematics
Do NOT store the hoist under a load.
Remove any dirt or water on the hoist.
Store the hoist in a dry and clean area.
If any irregularity of the hoist is found after operation, perform all inspections given in the
Owner’s Manual and the KTI inspection manual.
2. Disassembly, Assembly and Adjustment
Perform proper maintenance in accordance with this manual.
The friction plates are dry ones. Do NOT lubricate them.
Do NOT extend the load chain, i.e. add extra links.
Remove old grease from the disassembled components.
Replace components with KITO authorized parts.
For reassembly, apply new grease and replace a split pin.
Note: The following symbols in this manual indicate the recommended lubricants.
G1: Moly Speed Grease No. 2 (SUMICO LUBRICANT)
G2: JIS K2246 general class 2, No. 1 rust preventive oil (Antirust P-210, NIPPON OIL)
G3: JIS K2220 general class 1, No.2 grease (Cup Grease 1-2, NIPPON OIL)
2.1. Tools
The size (mm) of hex keys to disassemble or reassemble the hoist as follows:
Product Code Chain Knob Bottom Yoke Hook Latch Brake Cover
LX003 3 3 3 4
LX005 3 N/A 3 4
CAUTION
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3. Components
1 1001 Top Hook Set 1114 Load Gear 1
2 1071 Latch Assembly 1116 Load Sheave 1
3 1011 Bottom Hook Set for 1 m lift 1 151 Friction Plate 2
1012 Bottom Hook Set for 2 m lift 1 152 Ratchet Disc 1
1013 Bottom Hook Set for 3 m lift 1 153 Friction Disc 1
1014 Bottom Hook Set for 4 m lift 1 155 Pawl 1
1021 Bottom Hook Set 1 158 Pawl Spring Assembly 1
4 1071 Latch Assembly 1161 Guide Roller 1
4A 81 Socket Head Cap Screw 2162 Stripper 1
4B 83 Spring Lock Washer 2163 Top Pin 1
4C 82 Hex Nut 2172 Brake Cover 1
4D 31 Bottom Yoke 2173 Button Head Socket Screw for LX003 2
841 Load Chain 1174 Button Head Socket Screw for LX005 2
45 Chain Stopper Link 1174 Button Head Socket Screw 1
41 Chain Pin 1175 Internal Tooth Lock Washer 3
49 Slotted Nut 1201 Chain Knob 1
42 Split Pin 1202 Lever Clamping Plate 1
101 Frame A 1206 Socket Head Cap Screw 2
102 Frame B 1204 Conical Lock Washer 2
103 Gear Case 1205 Free Chain Spring 1
105 Stud B 136 4211 Lever Assembly 1
104 Stud A 237 160 Female Thread 1
111 Pinion 1209 Free Chain Plate 1
15
16
5
6
7
8
9
10
11
14
12
Parts
per
Hoist
Part NamePart No.
Figure
No. Figure
No. Part No. Part Name Parts
per
Hoist
17
18
19
20
21
24
22
23
25
26
27
28
29
30
35
38
31
32
33
34
Note:
Although the bottom hook set for LX003 can be disassembled, the set is supplied with the load
chain in assembly.
After replacing the nameplate, copy the original LOT and SERIAL NO. onto it.
The detachable female thread is supplied with the lever.
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4. Hoist Disassembly
Proceed as follows:
4.1. Free chain knob & Lever
1) After removal of (33) Socket Head Cap Screw, (34) Conical Lock Washer and (31) Chain
Knob, turn (32) Lever Clamping Plate counterclockwise to detach the plate from the slot of
(37) Female Thread, and remove the plate and (35) Free Chain Spring.
2) Remove (38) Free Chain Plate and (39) Cam Guide from (16) Pinion.
3) Set the select lever (refer to Figure 1-1) on (36) Lever Assembly to “DN.”
4) By turning (36) Lever Assembly counterclockwise approximately two times with the no-load
side of (5) Load Chain pulled lightly, the assembly is removed from the hoist’s body.
4.2. Brake
1) Remove (28) and (29) Button Head Socket Screw fixing (27) Brake Cover, and remove the
cover.
2) With (22) Pawl and (20) Ratchet Disc disengaged, remove first (19) Friction Plate (outer)
from (16) Pinion, and then (20) Ratchet Disc followed by (19) Friction Plate (inner) and finally
(21) Friction Disc.
3) Remove (22) Pawl and (23) Pawl Spring from (14) Stud B.
4.3. Load Sheave & Gear case
1) Remove (10) Frame A, two of (15) Stud A, (14) Stud B, (26) Top Pin, (1) Top Hook Set, (24)
Guide Roller, (16) Pinion, (25) Stripper, (5) Load Chain and (18) Load Sheave in this order.
2) Remove (11) Frame B and (17) Load Gear.
5. Hoist Assembly
WARNING
Inspect and replace any worn or damaged parts according to the inspection manual.
Secure all nuts and bolts firmly with the specific torque.
Also secure all new split pins.
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5.1. Gear Case & Load Sheave
Refer to Figure 5-1 and proceed as follows:
1) Apply (G3) grease to the cogs of (17) Load Gear.
2) Place (12) Gear Case on a flat surface and set (17) Load Gear to the center of the circular
risen part inside the gear case as shown in Figure 5-1.
3) Align the holes and rims of (12) Gear Case and (11) Frame B.
Figure 5-1 Load Gear and Frame B Attachment to Gear Case
4) Apply (G1) grease to the parts of (18) Load Sheave contacting the holes of (11) Frame B as
shown in Figure 5-2
Figure 5-2 Applying Grease to Load Sheave
5) Align (18) Load Sheave with (17) Load gear as viewed from the hole of (11) Frame B, and
insert the end of the sheave as shown in Figure 5-3.
Figure 5-3 Load Sheave Attachment to Frame B
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5.2. Studs & Load Chain
1) Insert (15, 14) Studs A and B into their respective bases of (12) Gear Case as shown in
Figure 5-4.
Figure 5-4 Stud Attachment
2) Fasten (5) Load Chain to the bottom hook assembly as shown in “5.8 Hook & Load Chain.”
3) With (6) Chain Stopper Link in correct direction, no twisted links on (5) Load Chain, and the
chain welded part directed outward, set the chain onto (18) Load Sheave correctly as shown
in Figure 5-5.
Figure 5-5 Load Chain Reeving Direction
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4) Apply (G1) grease to the shaft of (24) Guide Roller contacting the hole of (11) Frame B as
shown in Figure 5-6.
Figure 5-6 Applying Grease to Guide Roller
5) Align a seated link with the slot of (24) Guide Roller and insert the roller into the hole of (11)
Frame B as shown in Figure 5-7.
Figure 5-7 Guide Roller Attachment to Frame A
5.3. Pinion & Stripper
1) Apply (G3) grease to the cogs of (16) Pinion and (G1) grease to the part of the pinion
contacting the hole of (11) Frame B as shown in Figure 5-8.
Figure 5-8 Applying Grease to Pinion
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2) Align the pinion with (17) Load Gear as viewed from the hole of Frame B and insert the
pinion into the hole as shown in Figure 5-9.
Note: For proper assembly of (16) Pinion and (5) Load Chain, place the pinion with a seated
link of the chain facing the slot of it.
Figure 5-9 Pinion Attachment to Frame B
3) Align the boss with the center of (25) Stripper with a pocket of (18) Load Sheave and insert
the end of the stripper into the square hole in (11) Frame B. Refer to Figure 5-10.
Note: For proper assembly of (25) Stripper and (5) Load Chain, place the stripper with a
seated link of the chain facing the stripper.
Figure 5-10 StripperAttachment to Frame B
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5.4. Frame A& Hook
1) Apply (G1) grease to the following parts:
Refer to Figure 5-11.
The hole rim for (16) Pinion in (10) Frame Aor the equivalent section on the pinion
The hole rim for (18) Load Sheave in (10) Frame A or the equivalent section on the
sheave
The hole rim for (24) Guide Roller in (10) Frame Aor the equivalent section on the roller
2) Align Frame A with (16) Pinion, (18) Load Sheave, (24) Guide Roller, (15) Stud A, (14) Stud B
and (25) Stripper, and attach them as shown in Figure 5-11.
Figure 5-11 Frame AAttachment
3) Attach (1) Top Hook Set between (10, 11) Frame A and B and insert (26) Top Pin into the
hole for the hook in Frame A. Refer to Figure 5-13.
End of Pawl Spring (23) Pawl Spring Assembly
Figure 5-12 Pawl Spring Assembly
4) Put the end of one pawl spring through the coiled part of the other pawl spring and fit each
other into (23) Pawl Spring Assembly as shown in Figure 5-12.
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5.5. Pawl & Brake
Refer to Figure 5-13 and proceed as follows:
1) Apply (G2) grease to (14) Stud B and (23) Pawl Spring Assembly.
2) Put the end of (23) Pawl Spring Assembly into the small hole in (10) Frame A and place the
spring assembly around the bottom of (14) Stud B.
3) Place (22) Pawl around (14) Stud B and hook the opposite end of (23) Pawl Spring Assembly
around the Pawl.
4) While directing the tip of the pawl outward by turning (22) Pawl counterclockwise, attach (21)
Friction Disc (as shown in Figure 5-14) and (19) Friction Plate (inner) to (16) Pinion.
Figure 5-13 Pawl and Pawl Spring Attachments
Figure 5-14 Friction Disc
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