KITO CB Series Original instruction manual

OM-M3ZZZZ-MGE-01
OWNER’S (OPERATOR’S) MANUAL
AND SAFETY INSTRUCTIONS
FOR CB SERIES CHAIN HOIST (MODEL M3)
BEFORE USING THIS PRODUCT:
ALWAYS SAVE THIS BOOK FOR FUTURE REFERENCE
ALWAYS READ OWNER’S (OPERATOR’S) MANUAL AND SAFETY INSTRUCTIONS
: IMPROPER chain hoist use could result in death or serious
injury. To avoid these hazards:
: NEVER hoist loads over or near people.
: NEVER work under or near hoisted loads.
: ALWAYS operate, inspect, and maintain this hoist in
accordance with applicable safety codes and regulations.
These safety instructions contain important information to
help you use the chain hoist in a safe manner. Pleases refer to
this Owner’s (Operator’s) Manual for
additional safety
information.
WARNING

CONTENS
DEFINITION·································································································1
1. BEFORE USE································································································1
1.1 Safety Summary······················································································1
1.2 Safety Instructions···················································································2
2. MAIN SPECIFICATIONS ·················································································5
3. OPERATION ·································································································7
3.1 Safety Consideration ················································································7
3.2 Operation······························································································7
3.3 Hoist Storage ·························································································7
3.4 Principle and Operations of the Overload Limiter ··············································7
4. INSPECTION ································································································8
4.1 Outline·································································································8
4.2 Daily Inspection······················································································8
4.3 Periodic Inspection ··················································································9
5. MAINTENANCE·························································································· 14
5.1 Lubrication·························································································· 14
5.2 Overhaul, Assembly and Adjustment ··························································· 15
6. WARRANTY······························································································· 24
7. PARTS LIST································································································ 25

- 1 -
WARNING
DEFINITION
: indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
1. BEFORE USE
1.1 Safety Summary
Danger exists when heavy loads are transported, particularly when the equipment is
not being used properly or is poorly maintained. Because accidents and serious injury
could result, special safety precautions apply to the operation, maintenance and
inspection of the Manual Chain Hoist.
Following these simple rules can help to avoid hoisting accidents;
: IMPROPER chain host use could result in death or
serious injury. To avoid these hazards.
NEVER use a hoist for lifting, supporting or transporting people.
NEVER lift or transport loads over or near people.
NEVER work near or under hoisted loads.
NEVER lift more than rated load.
ALWAYS let people around you know when a lift is about to begin.
ALWAYS make sure that the supporting structures and load-attaching
device are strong enough to hold the weight of the load and
hoist.
ALWAYS read Owner’s (Operator’s) manual and safety instructions.
Remember, proper rigging and lifting techniques are the responsibility of the
operator. Be sure to read and understand the instructions contained in this manual
before using your hoist. Check all applicable safety codes, regulations and other
applicable laws for further information about the safe use of your hoist.
More detailed safety information is conta
ined in the following pages. For
additional information, please contactKito Corporation or yourauthorized Kito
dealer.
WARNING

- 2 -
1.2 Safety Instructions
Serious injury could result if the following safety instructions are not followed.
: IMPROPER chain hoist use could result in death or serious
injury. To avoid these hazards:
“ALWAYSs”
ALWAYS make sure that you and others are clear of the load before lifting begins.
ALWAYS allow only qualified (trained in safety and operation) people to operate the hoist.
ALWAYS operate a hoist only if you are physically fit.
ALWAYS check the hoist before daily use according to the Recommended Daily Inspection
(Refer to Sec. 4.2).
ALWAYS let the authorized personnel inspect the hoist periodically (Refer to Sec. 4.3).
ALWAYS make sure that the chain length is long enough for the intended job.
ALWAYS check that the hook latches are in proper working order before use (Refer to Sec.
4.3).
ALWAYS replace all missing or broken hook lathes.
ALWAYS be sure that the hoist’s rated capacity, which is found on the hoist’s label, is well in
excess of the weight of the load.
ALWAYS be sure that the load is properly seated in the saddle of the hook.
ALWAYS keep the load from hitting the chain.
ALWAYS use two hoistswhich have rated capacities equalto or more than the load to be lifted
whenever you must use two hoists to lift a load. This will provide adequate
protection in the event that a sudden load shift or failure of one hoist occurs.
ALWAYS check the brake before use (Refer to Sec. 4.3).
ALWAYS check for loose or missing parts before use.
ALWAYS lubricate the hoist regularly (Refer to Sec. 5.1).
ALWAYS pay attention to the load at all times when operation the hoist.
ALWAYS ease the slack out of the chain and sling when starting a lift to prevent a sudden
loading.
WARNING

- 3 -
ALWAYS secure a hoist and loads properly after use.
ALWAYS consult the manufacturer or your dealer if you plan to use a hoist in a
dusty, moist or greasy environment.
ALWAYS consult the manufacturer or your dealer if you plan to use a hoist in an
excessively corrosive environment.
ALWAYS operate the hoist with manual power.
: IMPROPER chain hoist use could result in death
or serious injury. To avoid these hazards:
“NEVERs”
NEVER use the hoist to transport people.
NEVER lift a load over people.
NEVER work near or under hoisted loads.
NEVER operate a hoist if damaged or malfunctioning.
NEVER use a hoist which has been taken out of service until the hoist has been
properly repaired or replaced.
NEVER use a hoist if the hook latch is missing or broken.
NEVER lift a load unless it is directly under the hook.
NEVER splice a hoist chain.
NEVER use non-authentic KITO chains on the hoist.
NEVER use the hoist chain a sling.
NEVER force a chain or hook into place by hammering.
NEVER jerk a load to prevent a sudden loading.
NEVER use a twisted, kinked, damaged or stretched load chain.
NEVER swing a suspended load.
NEVER support a load on the tip of the hook.
WARNING

- 4 -
NEVER suspend a load for an extended period of time.
NEVER leave a suspended load unattended.
NEVER run the load chain over a sharp edge.
NEVER weld or cut a load suspended by a hoist.
NEVER use the hoist chain as a welding electrode.
NEVER use the hoist with rusty chain.
NEVER wind so far that the hook touches the block.
NEVER unwind so far that no unloaded chain is left.
NEVER operate a hoist if chain jumping, excessive noise, jamming,
overloading or binding occurs.
NEVER use a hoist without chain stopper (or tail pin) at the end of no
load side chain.
NEVER throw a hoist.
NEVER use ahost without a name plate orwarning tag and label orwith
illegible name plate, warning tag and label.
NEVER remove or obscure the warning tag.
NEVER use modified or deformed hooks.
NEVER use a motor to operate a manual hoist.
NEVER use a hoist near fire or where hot objects may touch it.
NEVER use the hoist in temperatures below -40 C (-40 F) or above
+60 C (+ 140 F).
NEVER lift the bottom hook closer to the top hook than minimum
distance. (Refer to Sec. 2: Dimensions table)
WARMOMG TAG is installed on a hand chain.

- 5 -
2. MAIN SPECIFICATIONS
Unit system is the metric one (SI unit system) in the following table.
Specifications
Model Code Nominal
Capacity Std. Lift Chain Pull
to Lift Full
Load
Chain
O'hauled to
Lift Load
One Meter
Test Load Net
Weight
Shipping
Weight
(Approx)
Load Chain
Dia. (mm)x
Fall (lines)
Weight in kg
for Additional
One Meter of
Lift
(t) (m) (kg) (m) (t) (kg) (kg) (kg)
M3 CB005 0.5 2.5 24 25 0.75 10 10.5 5.0

1 1.5
M3 CB
010
1 2.5 29 43 1.5 11.5 12 6.3

l 1.8
M3 CB015 1.5 2.5 35 57 2.36 14.5 15 7.l

l 2.1
M3 CB020 2 3.0 36 70 3 20 21 8.0

l 2.3
M3 CB025 2.5 3.0 33 99 3.75 27 28 9.0

1 2.7
M3 CB030 3 3.0 36 114 4.75 24 26 7.1

2 3.2
M3 CB050 5 3.0 34 198 6.3 41 43 9.0

2 4.4
M3 CB075 7.5 3.5 35 297 9.5 63 66 9.0

3 6.2
Any lift of chain is available on request. Because KITO chains are specially heat-treated, only authentic KITO chains should be
used on your hoist. Never attempt to lengthen your chain by attaching additional chain links with any other means.
KITO can supply almost any length of chain desired. Simply specify the length of chain desired when ordering.
Dimensions
Model Nominal
Capacity
Min. Distance
between Hooks
:C
a b d e f g s p u v w x
(t) (mm) (mm) (mm) (m) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
M3 0.5 285 158 161 2.5 69 99 27 35.5 12.1 17 77 35 89
M3 1 295 162 161 2.5 71 99 29 42.5 16 21.8 93 41 101
M3 1.5 350 171 182 2.5 78 112 34 47.5 19.5 26.5 106 47 119
M3 2 375 182 202 3 87 125 36 50 21.8 30 116 49 124
M3 2.5 420 192 233 3 91 143 40 53 24.3 33.5 127 53 136
M3 3 510 171 235 3.1 78 162 42.5 56 27.2 37.5 138 57 148
M3 5 600 192 282 3.6 91 194 46.5 63 34.5 47.5 161 67.5 172
M3 7.5 770 192 373 4.2 91 253 72.5 85 47.5 63 231 97.5 275
0.5
to
2.5
t
3
to
5
t
7.
5
t

- 6 -
Specifications
Model Code Nominal
Capacity Std. Lift Chain Pull
to Lift Full
Load
Chain
O'hauled to
Lift Load
One Meter
Test Load Net
Weight
Shipping
Weight
(Approx)
Load Chain
Dia. (mm)x
Fall (lines)
Weight in kg
for Additional
One Meter of
Lift
(t) (m) (kg) (m) (t) (kg) (kg) (kg)
M3 CBl00 10 3.5 36 396 12.5 83 91 9.0

4 7.9
M3 CB150 15 3.5 37 594 20 155 165 9.0

6 11.4
M3 CB200 20 3.5 36

2 396

2 25 235 305 9.0

8 15.8
Any lift of chain is available on request. Because KITO chains are specially heat-treated, only authentic KITO chains should be
used on your hoist. Never attempt to lengthen your chain by attaching additional chain links with any other means.
KITO can supply almost any length of chain desired. Simply specify the length of chain desired when ordering.
Dimensions
Model Nominal
Capacity
Min. Distance
between Hooks
:C
a b d e f g s p u V W X
(t) (mm) (mm) (mm) (m) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
M3 10 760 192 438 4.2 111 308 72.5 85 47.5 63 231 97.5 295
M3 15 1020 268 492 4.7 119 337 80 100 60 80 275 110 320
M3 20 1180 374 746 4.8 187 373 81 110 67 90 301 125 351
10
t
20
t

- 7 -
WARNING
WARNING
3. OPERATION
3.1 Safety Consideration
: Improper operation could result in death or serious injury. To
avoid these hazards, only operate the chain hoist by hand.
Power operation may result in structural damage or premature
wear. This damage or wear may cause a part to break and cause
the load to fall.
3.2 Operation
1. Face the hand chain wheel side of the hoist.
2. To raise the load, pull hand chain clockwise.
3. To lower the load, pull hand chain counterclockwise.
NOTE: The clicking sound of the pawl when a load is being raised indicates normal operation.
3.3 Hoist Storage
: IMPROPER chain hoist use could result in death or serious
injury. To avoid these hazards:
ALWAYS store the hoist in no load condition.
ALWAYS wipe off all dirt and water.
ALWAYS oil the chain, top pin, chain pin and hook latches.
ALWAYS hang in a dry place.
ALWAYS check the hoist for abnormalities when using the hoist after a period of non-use
according to the regular inspection procedures (Refer to Sec. 4.3).
3.4 Principle and Operation of the Overload Limiter (OPTIONAL)
: IMPROPER chain hoist use could result in death or serious
injury. To avoid these hazards:
: NEVER disassemble or attempt to adjust the overload limiter
assembly. Any attempt to do so will void the warranty. Contact
your closest KITO Dealer, if service is required.
The overload limiter device has been developed to avoid overloading. When an applied load exceeds
the preset value, the hand chain wheel rotates idly. The device is friction clutch mechanism which is
concentrically equipped on pinion shaft between hand chain wheel and mechanical brake.
WARNING

- 8 -
4. INSPECTION
4.1 Outline
There are two types of inspection, the daily inspection performed by the operator while using the
hoist, and the more thorough periodic inspections performed by qualified personnel who have
the authority to remove the unit from service.
4.2 Daily Inspection
Before each work shift, check the following points:
(1) Check that the name plate showing the hoist capacity is attached and clearly legible.
(2) Check that the warning tag and label are attached and clearly legible.
(3) Check for visual defects or abnormal noises which could indicate a defect.
(4) Check that the top and bottom hook latches are in place and in proper condition.
(5) Make sure the openings of the top and bottom hooks are not too wide, that the swivel rotates
freely and that the hook latch is in position and works normally.
(6) Check for wear or damage, increased throat width, bent shank or bending of hook.
(7) Check that the chain does not have excessive rust or corrosion and that it is not dry due to
lack of lubricant.
(8) When facing the hand chain side of the hoist with no load:
The brake is operating normally if the pawl "clicks" when the hand chain is wound in a
clockwise direction and does not "click" when operated in the counter- clockwise direction.
(9) Check lubrication and lubricate if necessary. (Refer to Sec. 5.1)
Clutch plate
Hand wheel
Spring disc seat
Wheel
roller
Slotted nut
Female thread
Adjust nut
Washer
Spring disc
Pawl
Friction disc
Pinion
Friction plate
Ratchet disc

- 9 -
(10) Check that the chain is assembled normally and that there is no twisting.
(11) Check for loose or missing nuts and for missing split pins.
4.3 Periodic Inspection
Periodic inspections should be made at the interval shown below and should follow the given
procedures.
NORMAL (Normal use): Semiannual inspection
HEAVY (Frequent use): Quarterly inspection
SEVERE (Excessively frequent use): Monthly inspection
<Periodic Inspection Procedure>
Figures in parentheses are Figure NOS. in Parts List.
Item Inspection Method Discard Limit/Criteria Measures
Indications
HOOK [1, 6, 55, 78]
(Top and Bottom)
1. Deformation/
twist of hook
opening
Check visually.
Measure dimension
“e” between two
embossed marks at
time of purchase
with calipers.
Check visually.
Capacity indication is clear.
No deformation from original
shape (at time of purchase).
Twist shall not be large
enough to detect visually.
Attach the
name plate.
Replace the
hook.
Replace the
hook.
2. Wear Measure "c" and
"d" with slide
calipers.
Never use the hook if
dimension “c” or “d” becomes
less than 90% of normal
Replace the
hook.
Table 1 (Reference dimensions)
Type
(t)
a(mm) b(mm) c (mm) d(mm)
Normal Normal Normal Discard Normal Discard
½
31.0 27.0 17.0 15.3 12.1 10.9
1 34.0 29.0 21.8 19.6 16.0 14.4
1½ 37.5 34.0 26.5 23.9 19.5 17.6
2
40.0 36.0 30.0 27.0
21.8
19.6
2½ 42.5 40.0 33.5
30.2
24.3
21.9
3 46.0 42.5 37.5 33.8 27.2 24.5
5 50.0 46.5 47.5 42.8 34.5 31.1
7½ 79.5 72.5 63.0 56.7 47.5 42.8
10 79.5 72.5 63.0 56.7 47.5 42.8
15 95.0 80.0 80.0 72.0 50.0 45.0
20
95.0 81.0 90.0 81.0 56.0
50.4

- 10 -
Item Inspection Method Discard Limit/Criteria Measures
3. Hook flaws
4. Hook movement
5. Top/bottom
fixture damage
[Fittings of 1, 6,
55, 78]
6. Idle sheave
rotation [57, 81]
7. Hook latch
[2, 7, 56, 80]
Check visually.
Tum hook.
Check visually.
Hold the load chain
with both hands
and turn the idle
sheave by moving
the chain up and
down.
Check visually.
No great damage permitted.
Shall turn smoothly.
No slack or missing rivets,
nuts or bolts.
Smooth rotation.
Proper positioning and smooth
working.
Replace the
hook.
Replace the
hook.
Replace the
hook.
Overhaul.
Replace the
latch or hook.
LOAD CHAIN
[47, 110]
1. Wear
2. Rust, flaws,
deformation
Measure with slide
calipers.
Check visually.
Measure the sum of pitches of
five chain links and check that
the maximum length does not
exceed value shown in table 2.
No obvious rust (Apply oil as
necessary.)
No twists or harmful flaws.
Replace the
chain.
Remove rust.
Replace the
load chain.
HOOK YOKE
Top set [l, 54]
Bottom set [6, 77]
Joint of Top/bottom
fixtures with top pin
[4] and chain pin [8,
106]
Measure hole
diameter of joint
area in two
directions at right
angle.
Deformation not permitted
(if each measured value differs
more than 0.5mm, it is not a
circle).
Replace the
part.
One pitch
Sum of pitches of five
links
Table 2
Type
(t) Sum of pitches of five links ( mm) Discard limit (mm)
½ 75.5 77.7
1 95.5 98.3
1½, 3 106.0 109.1
2 121.0 124.6
2½, 5, 7½
10, 15, 20 136.0 140.0

- 11 -
Item Inspection Method Discard Limit/Criteria Measures
FUNCTION
1. Lifting and
lowering
2. Brake
Lift and lower a
light load.
No abnormal difficult in lifting
or lowering.
Confirm that none of the
problems listed below occur
during lifting and lowering:
Lifting impossible.
Load falls when the operator
removes his hands.
Load fall during unwinding.
Load slips down slowly.
Overhaul and
service.
Overhaul and
service.
BRAKE
(Inside mechanism)
1. Flaws and wear
on the brake
surface [36,37,
38, 39]
2. Wear on friction
plate [37]
Overhaul and
check.
Check visually.
Measure with slide
calipers.
Should free of scars or gouged
flaws on the braking surface.
The braking surface should
not be excessively worn with
the tool marks erased and
surface lustered.
Retain uniform thickness and
friction plate shall not be worn
more than 0.5 mm.
For all types;
Normal thickness: 3 mm
Discard limit: 2.5mm
Replace the
part.
Replace the
part.
Side plate A
Pawl spring
Pawl
Snap ring
Hand wheel
Wheel stopper pin
Wheel stopper (41)
Split pin (43)
Friction disc
Friction plate
Ratchet disc
Bushing (37

- 12 -
Item Inspection Method Discard Limit/Criteria Measures
3. Flatness of
friction plate [37]
4. Bushing [39];
wear and oil
5. Ratchet disc
[38]; wear and
rust
Check clearance
with straight
gauge.
Check radial
thickness (t) with
calipers and oil
existence.
Check visually.
Clearance shall be uniform.
Internal part shall not be
thicker than external part.
Radial thickness (t) shall be
uniform. Oil shall be
contained.
Refer to table 3.
The tooth wear shall not be
more than 1.5 mm.
No rust
Replace the
part.
Replace the
part.
Replace the
part.
LIFTING SYSTEM
1. Load sheave
[14]; wear and
deformation
2. Gears [25,27];
wear and flaw
Check visually.
Check visually.
No large wear or no
deformation or no burr due to
load chain contact is permitted
on the surface of load chain
pocket.
Teeth shall be free from large
wear or flaws.
Replace the
part.
Replace the
part.
Friction plate (37)
(Discard condition)
Internal
External
Bushing (39)
t: Radial thickness
Table 3
Type
( t )
Normal
thickness: t (mm)
Discard limit
(mm)
½, 1, l ½, 3 3 2
2, 2½, 5, 7½
10, 15, 20 4 3
Bushing (39)
Load chain pocket
Load sheave (14)

- 13 -
Item Inspection Method Discard Limit/Criteria Measures
3. Hand wheel [40];
wear and
deformation
Check visually. No large wear or no
deformation on the surface of
hand chain pocket.
Turn and check if it touches
the cover.
Replace the
part.
Replace the
part.
SIDE PLATES
[11, 13]
1. Deformation of
top pin hole
2. Slack stay bolt
restraint
Check visually.
Tap.
Hole shall not be oval.
No slack is permitted.
Replace the
part.
Replace the
frame.
MISCELLANEOUS
1. Deformation of
stripper [21]
2. Flaw on guide
roller [20]
Check visually
Check visually
No large crush or damage on
stripper tip is permitted.
Shall turn lightly.
No large deformation.
Replace the
part.
Replace the
part.
Top hook (1)
Stay bolt
Side plate A (11)
Side plate A (13)
Top pin hole

- 14 -
WARNING
5. MAINTENANCE
: IMPROPER chain hoist use could result in death or serious
injury. To avoid these hazards:
: NEVER perform maintenance on the hoist while it is supporting
a load.
: Before performing maintenance, attach the tag:
["DANGER": DO NOT OPERATE EQUIPMENT BEING
REPAIRED.]
: Only allow qualified service personnel to perform maintenance.
: After performing any maintenance on the hoist, always test to its
rated capacity before returning to service.
5.1 Lubrication
5.1.1Applying Grease to Gears
Unscrew nuts (31), on the opposite side of hand chain wheel, and remove spring washers (32)
and gear case (29). Remove old grease and replace with new grease (standard grease*), at annual
inspection.
Temperature range of standard grease is -40°C (-40°F) to +60°C (140°F).
If the hoist is used at temperature below -40°C (-40°F) or above +60°C (140°F), consult the
manufacturer or dealer since some parts shall be changed.
*Recommended brand: Shell Albania #3 or calcium soap grease equivalent of NLGI (National Lubricating Grease
Institute)/#3
5.1.2Load Chain
: IMPROPER chain hoist use could result in death or serious
injury. To avoid these hazards:
: Failure to maintain clean and well lubricated load chain will void
the manufacturer's warranty.
ALWAYS lubricate load chain weekly, or more frequently, depending on severity of service.
ALWAYS lubricate more frequently than normal in a corrosive environment. *
ALWAYS use rust preventive oil equivalent to ISO VG32.
ALWAYS clean chain with an acid free solvent only to remove rust or abrasive dust build-up.
After cleaning, lubricate the chain.
ALWAYS lubricate each link of the chain and apply new lubricant over existing layer.
* A corrosion-resistant chain is available as option. For information on the capabilities and
limitations of KITO's regular and corrosion-resistant chain, please ask your dealer.
WARNING

- 15 -
5.2 Overhaul, Assembly and Adjustment
5.2.1Overhaul Figures in parentheses are Figure Nos. in Parts List.
Overhaul Procedures Remarks
1. Put a hoist with wheel cover side up.
2. Unscrew three nuts [45] (with the spring washers [46]) fixing the
wheel cover [44] and remove the wheel cover from the side plate
A [11].
3. Remove the hand chain [48] from the hand wheel [40].
4. Pull out the split pin [43] from the wheel stopper pin [42] and
remove the wheel stopper pin and the wheel stopper [41] from the
pinion [17].
5. Remove the hand wheel [40] from the pinion [17] by turning the
hand wheel counterclockwise.
If the hand wheel is too
tight to turn by hand, put
the hand chain on the hand
wheel back again and pull it
down hard. It will release
the brake.
6. Remove two friction plates [37], the ratchet disc [38] and the
bushing [39] from the friction disc [36].
7. Unscrew the friction disc [36] from the pinion [17] by turning
counterclockwise holding the end of the pinion with fingers.
8. Remove the snap ring [35] from the pawl pin (on the side plate A)
and then remove the pawl [34] and pawl spring A and B [33].
9. <For 7½ t and smaller types>
Pull the split pin [24] out from the stopper pin [23] and remove
the load chain [47] and the stopper pin from the anchorage [22].
<For 10 t and larger types>
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.
10.Remove the load chain [47] from the load sheave [14] by pulling
the load chain toward the bottom hook.
11.Remove the split pin [5] from the top pin [4], then remove the top
pin and the top hook [l] from the side plate A [11] and B [13].
12.Put a hoist with gear case side (or name plate side) up.

- 16 -
Overhaul Procedures Remarks
13.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 take the ball bearings [28] out from the gear case.
14.Remove two pairs of the gear #2 [27] (½ t has one pair) from the
side plate B [13].
15.Remove the snap ring [26] from the load sheave [14], then the
load gear [25] from the load sheave.
16.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.
17.Remove the guide rollers [20], load sheave (attached to the pinion
[17]), stripper [21] and anchorage [22] (For 10 t larger types :
cross guide [53]) from the side plate A [11], then remove the ball
bearing [15] from the side plate A.
18.Remove the snap ring [19] in the load sheave [14].
19.Remove the pinion [17] and the roller bearing [18] from the load
sheave [14].
Hold the load sheave with a
hand and remove the
bearing by tapping the
pinion with a wooden
hammer.
20.Pull the split pin [10] out from the slotted nut [9] and remove the
slotted nut and chain pin from the bottom hook [6].

- 17 -
5.2.2Assembly and Adjustment
Assembly Procedures Remarks
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].
2. Put the side plate A [11] with a brake cover side down and insert
the ball bearing [15] (with a snap ring side up) into the side plate
A. Grease the balls of ball bearing shown in the side plate A.
3. Insert the load sheave [14] with a part of involute serration side
(pinion gear side) up into the ball bearing [15]. The stripper [21]
must be put as well.
4. <For 7½ t and smaller types>
Put the guide rollers [20] and the anchorage [22] in the side plate
A [1l].
<For 10 t and larger types>
Put the guide rollers [20] and the cross guide [53] in the side plate
A [11].
The arrow* direction on the
outer side of the roller
bearing shall be faced to
pinion gear side. When
inserting, use a screwdriver
on the bearing and tap it
with a wooden hammer.
Always make sure that the
snap ring is correctly
seated.
Put the cross guide so that
the longer arm fits to the
side plate A.
WARNING
Load sheave [14]
Pinion [17]
Arrow*
Roller bearing [18]
Snap ring [19]
Side plate A [11]
Pinion [17]
Stripper [21]

- 18 -
Assembly Procedures Remarks
5. Grease the balls of the ball bearing [16].
Insert it with the snap ring side down to the shaft of the load
sheave [14].
6. Join the side plate B [13] to the side plate A [11].
7. Mesh the load gear [25] with the involute serration of the load
sheave [14] and fix it with a snap ring [26].
8. Grease the two pairs of the gear #2 [27], the load gear [25] and
the gear of the pinion [17]. Put them in the gear plain bearing
(bearing A) of the side plate B [13]. Letters O and V on the gears
must face to each other as shown in the below picture. Do not
forget to apply grease to the boss on the both sides of the gear #2.
As for the ball bearing of
the load sheave, make sure
that the snap ring is placed
on the side of the load
sheave where the load chain
reeves.
In case it is difficult to join
the two, tap it with a
wooden hammer. Be careful
not to let the stripper, guide
roller, and anchorage fall
down.
Always make sure the snap
ring is completely set at the
bottom of the ditch.
It is not necessary to adjust
the letters in case of the ½ t
model, for it has only one
pair of the gear #2.
WARNING
Side plate A [11]
Guide roller [20]
Pinion [17]
Ball bearing [16]
Stripper [21]
Load sheave [14]
Guide roller
[20]
(For 7½ t and
smaller types)
Anchorage [22]
Cross guide
[53] (For 10 t
and larger
types)
Side plate B [13]
Gear #2 [27]
Pinion [17]
Gear #2 [27]