Page 1
Code, Lot and Serial Number
EFFECTIVE: March 17, 2008
This equipment should not be installed, operated or
maintained by any person who has not read and understood
all the contents of this manual. Failure to read and comply
with the contents of this manual can result in serious bodily
injury or death, and/or property damage.
NAVY
TROLLEY
HOIST
MODEL NTH
1 Ton through 5 Ton Capacity
Page 2
Table of Contents
Section Page Number
1.0 Important Information and Warnings ……………………………………………………………………… 4
1.1 Terms and Summary
1.2 Warning Tags and Labels
2.0 Technical Information…………………………………………………………………………….…………. 8
2.1 Specifications
2.2 Dimensions
2.3 Optional Equipment
3.0 Preoperational Procedures ………………………………………………………………………………..12
3.1 Chain
3.2 Attachment Points
3.3 Mounting the Hoist
3.4 Preoperational Checks and Trial Operation
4.0 Operation …………………………………………………………………………………………………... 17
4.1 Introduction
4.2 Shall’s and Shall Not’s for Operation
4.3 Safety Consideration
4.4 Operation
5.0 Inspection ………………………………………………………………………………………………….. 20
5.1 General
5.2 Inspection Classification
5.3 Frequent Inspection
5.4 Periodic Inspection
5.5 Occasionally Used Hoists
5.6 Inspection Records
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Section Page Number
5.7 Inspection Methods and Criteria
6.0 Maintenance & Handling …………………………………………………………………………………. 30
6.1 Lubrication
6.2 Disassembly, Assembly and Adjustment
6.3 Hoist Disassembly
6.4 Hoist Assembly
6.5 Storage
6.6 Outdoor Installation
7.0 Troubleshooting …………………………………………………………………………………………… 38
8.0 Warranty …………………………………………………………………………………………………… 41
9.0 Parts List …………………………………………………………………………………………………… 43
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Page 4
These general instructions deal with the normal installation, operation, and maintenance situations encountered with
the equipment described herein. The instructions should not be interpreted to anticipate every possible contingency
or to anticipate the final system, crane, or configuration that uses this equipment. For systems using the equipment
covered by this manual, the supplier and owner of the system are responsible for the system’s compliance with all
applicable industry standards, and with all applicable federal, state, and local regulations/codes.
This manual includes instructions and parts information for a variety of hoist types. Therefore, all instructions and
parts information may not apply to any one type or size of specific hoist. Disregard those portions of the instructions
that do not apply.
Record your hoist’s Code, Lot and Serial Number (see Section 9) on the front cover of this manual for identification
and future reference to avoid referring to the wrong manual for information or instructions on installation, operation,
inspection, maintenance, or parts.
Use only Harrington authorized replacement parts in the service and maintenance of this hoist.
1.0 Important Information and Warnings
1.1 Terms and Summary
This manual provides important information for personnel involved with the installation, operation and
maintenance of this product. Although you may be familiar with this or similar equipment, it is strongly
recommended that you read this manual before installing, operating, or maintaining the product.
Danger, Warning, Caution, and Notice
Throughout this manual there are steps and procedures that can present hazardous situations. The following
signal words are used to identify the degree or level of hazard seriousness.
Danger indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury, and property damage.
Warning indicates an imminently hazardous situation which, if not avoided, could result in
death or serious injury, and property damage.
Caution indicates a potentially hazardous situation which, if not avoided, may result minor
or moderate injury or property damage.
Notice is used to notify people of installation, operation, or maintenance information which
is important but not directly hazard-related.
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Page 5
Equipment described herein is not designed for and MUST NOT be used for lifting, supporting, or transporting
people, or for lifting or supporting loads over people.
Equipment described herein should not be used in conjunction with other equipment unless necessary and/or
required safety devices applicable to the system, crane, or application are installed by the system designer, system
manufacturer, crane manufacturer, installer, or user.
Modifications to upgrade, rerate, or otherwise alter this equipment shall be authorized only by the original equipment
manufacturer.
Equipment described herein may be used in the design and manufacture of cranes or monorails. Additional
equipment or devices may be required for the crane and monorail to comply with applicable crane design and
safety standards. The crane designer, crane manufacturer, or user is responsible to furnish these additional items
for compliance. Refer to ANSI/ASME B30.17, “Safety Standard for Top-Running Single Girder Cranes”;
ANSI/ASME B30.2 “Safety Standard for Top-Running Double-Girder Cranes”; and ANSI/ASME B30.11 “Safety
Standard for Underhung Cranes and Monorails”.
If a below-the-hook lifting device or sling is used with a hoist, refer to ANSI/ASME B30.9, “Safety Standard for
Slings” or ANSI/ASME B30.20, “Safety Standard for Below-the-Hook Lifting Devices”.
Hoists used to handle hot molten material may require additional equipment or devices. Refer to ANSI Z241.2,
“Safety Requirements for Melting and Pouring of Metals in the Metalcasting Industry”.
Failure to read and comply with any one of the limitations noted herein can result in serious bodily injury or death,
and/or property damage.
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Page 6
It is the responsibility of the owner/user to install, inspect, test, maintain, and operate a trolley or hoist in accordance
with ANSI/ASME B30.16, “Safety Standard for Overhead Hoists”, OSHA Regulations and ANSI/NFPA 70, "National
Electric Code". If the trolley is installed as part of a total lifting system, such as an overhead crane or monorail, it is
also the responsibility of the owner/user to comply with the applicable ANSI/ASME B30 volume that addresses that
type of equipment.
It is the responsibility of the owner/user to have all personnel that will install, inspect, test, maintain, and operate a
hoist read the contents of this manual and applicable portions of ANSI/ASME B30.16, “Overhead Hoists
(Underhung)” and OSHA Regulations. If the trolley is installed as part of a total lifting system, such as an overhead
crane, the applicable ANSI/ASME B30 volume that addresses that type of equipment must also be read by all
personnel.
If the hoist owner/user requires additional information, or if any information in the manual is not clear, contact
Harrington or the distributor of the hoist. Do not install, inspect, test, maintain, or operate this hoist unless this
information is fully understood.
A regular schedule of inspection of the hoist in accordance with the requirements of ANSI/ASME B30.16 should be
established and records maintained.
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Page 7
1.2 Warning Tags and Labels
English Version
Bilingual Version (shown larger for legibility)
Figure 1-1 Warning Tag Attached to Hoist
The warning tag illustrated below in Figure 1-1 is supplied with each hoist shipped from the factory. If the tag is
not attached to your hoist’s no-load side of the load chain, order a tag from your dealer and install it. Read and
obey all warnings attached to this hoist. Tag is not shown actual size.
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Page 8
2.0 Technical Information
Temperature range:
-4° to +140°F (-20° to +60°C)
Humidity:
100% or less (Not an Underwater Device)
2.1 Specifications
2.1.1 Product Code
2.1.2 Operating Conditions and Environment
.
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Page 9
Table 2-1 NTH Trolley Hoist Specifications
Cap.
(Tons)
Product Code
Headroom
C (in)
Std.
Lift
(ft)
Pull
to Lift
Load
(lbs)
Overhaul
Ratio
Min.
Radius
for
Curve
(in)
*Flange
Range B
(in)
Load
Chain Dia.
(mm) x
Chain Fall
Lines
Push
Geared
Push
Trolley
Geared
Trolley
Net
Wt.
(lbs)
Shipping
Weight
Approx.
(lbs)
Wt. for
Addn’l
One ft
of Lift
(lbs)
Net
Wt.
(lbs)
Shipping
Weight
Approx.
(lbs)
Weight
for
Addn’l
One ft
of Lift
(lbs)
1
NTH010
G-NTH010
12.5
10
72
31
39
2.28-4.92
6.3x1
62
65
1.2
73
78
1.8 2 NTH020
G-NTH020
16.5
10
80
63
47
3.94-5.91
6.3x2
92
97
1.8
103
110
2.4
3
NTH030
G-NTH030
19.0
10
92
81
59
3.94-5.91
7.1x2
125
133
2.1
136
177
2.8 5 NTH050
G-NTH050
20.3
10
92
134
79
4.92-6.89
7.1x3
188
200
2.9
199
240
3.5
* Other beam widths available. Consult factory.
Table 2-2 NTH Trolley Hoist Dimensions
Figure 2-1 NTH (Push Trolley Model)
Figure 2-2 G-NTH (Geared Trolley Model)
Cap.
(Tons)
a
(in)
a’
(in) b (in) d (ft) e (in)
e’
(in) f (ft) g (in) h (in)
i
(in)
j
(in) k (in)
k’
(in) m (in) n (in) r (in)
t
(in)
1
8.1
12.9
10.9
10.0
1.0
5.9
10.4
1.1
4.2
2.80
0.8
3.5
4.4
1.9
4.6
1.9
0.75
2
9.3
14.0
13.8
10.0
1.2
6.0
10.4
1.4
5.0
3.35
0.9
4.2
4.7
2.3
5.4
2.3
1.00
3
9.9
14.5
15.6
10.0
1.3
5.9
10.8
1.7
5.8
3.94
0.9
4.9
5.0
2.4
6.2
2.4
1.13
5
11.2
15.8
18.3
10.6
1.5
6.2
11.3
1.8
6.7
4.65
1.0
5.6
5.1
3.0
7.0
2.9
1.63
*NOTE: Any lift of chain is available on request. Simply specify the length of chain desired when ordering. Because
Harrington chains are specially heat treated, only authentic Harrington chains should be used on your hoist. NEVER
attempt to lengthen the chain by attaching additional chain links to it or by any other means.
2.2 Dimensions
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Page 10
Table 2-3 Bottom Hook Dimension*
Figure 2-3
Cap.
(Tons)
Product
Code
a
(in) b (in) c (in) d (in) e (in) g (in)
1
NTH010
1.0
0.6
0.9
0.6
1.7
1.1 2 NTH020
1.4
0.9
1.2
0.9
2.0
1.4 3 NTH030
1.8
1.1
1.5
1.1
2.2
1.7 5 NTH050
2.2
1.4
1.9
1.4
2.5
1.8
*Refer to Section 5.7 for inspection dimensions and limits.
Figure 2-4 Latch Lock Hooks
2.3 Optional Equipment
2.3.1 Optional Latch Lock Hooks
The Bullard hook has a conventional hook shape with a special, heavy-duty, rotating, spring-
loaded, locking latch. The latch remains locked until it is released by the operator.
The Shur-Loc hook is a special design hook where the latch remains fixed and the hook swings
to unlock. The hook cannot be opened while a load is applied.
Installation of these hooks may change the headroom.
See Section 9.2, Parts List for a complete Latch Lock Hook part listing.
2.3.2 Optional Inspection Hook
The Inspection Hook is designed to facilitate the inspection of the internal surfaces of the hook
Disassembly and re-assembly involves removal and reinstallation of the yoke fasteners of the
The Inspection Hook is available only for the NTH010 hoist.
See Section 9.2, Parts List for a complete Inspection Hook part listing.
yoke and shank portion of the hook itself. The Inspection Hook is suitable for applications where
inspection of the internal parts of the hook set is required. The inspection hook uses the standard
Harrington hook set and is assembled with high-strength locking fasteners instead of rivets.
Inspection hooks are available in top and bottom versions. Refer to Figure 2-5.
Inspection Hook Set Assembly followed by testing of the hoist prior to returning it to service.
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Figure 2-5 Inspection Hooks
Figure 2-6 CF Chain Container
2.3.3 Optional Chain Containers
Chain containers are sized based on the capacity and lift of the hoist. The containers are
constructed from vinyl coated canvas with a steel frame on top. The containers are prepared
differently depending on the hoist model. See Harrington document EDOC0154 using the
appropriate CF hoist for sizing information.
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3.0 Preoperational Procedures
Figure 3-1 Trolley Side Plate Assembly
Figure 3-2 Spacer Assembly
3.1 Trolley Adjustment
3.1.1
inserting or removing adjusting spacers to fit a variety of beam flanges. To adjust the trolley, reference
Figures 3-1 and 3-2. Proceed with the following instructions:
1. Remove the stop pins and slide off side plate B and spacers from the suspension shafts.
2. Reinsert the appropriate number of inner spacers for the desired flange width (Table 3-1).
3. Insert side plate “B” and external spacers and lock into place with the stop pins.
Note: Referencing Figure 3-2, the trolley wheel flange to wheel flange dimension (A) will be
approximatly 1/8” wider than the beam width (B). This will leave 1/16” clearence per side.
There will also be a clearence between the inner spacers and the sideplate (C). This
dimension will equal up to approximatly 3/8”.
Before use, the manual trolley can be adjusted in increments of 1/8” by simply
Note: Pages 13 and 14 give spacer arrangement information. Take note the number on spacers of inner side as
follows:
Example: 1 + 2
Number on Side Plate A
Number on Side Plate B
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Page 13
Table 3-1 Number of Adjusting Spacers
I-Beam
Width
(in)
16
5
2
2 ½
2 ⅞
3
3 ¼
16
9
3
3 ⅞
16
15
3
4
16
3
4
16
5
4
16
7
4
16
11
4
16
15
4
5
16
3
5
16
5
5
5 ⅜
5 ⅝
5 ⅞
6
6 ⅛
16
5
6
16
7
6
2 ⅝
16
15
2
4 ¾
16
15
5
Cap.
(mm)
58
64
73
75
82
90
98
100
102
106
110
113
119
125
127
131
135
137
143
149
153
155
160
163
66
74
76
91
120
150
NTH010
Inner
0
1+1
3+3
3+3
4+4
5+6
7+7
7+7
7+8
8+8
8+9
9+9
10+11
11+12
11+12
4+4
4+4
4+5
6+6
7+7
7+8
8+8
8+9
9+9
Outer
24
22
18
18
16
13
10
10 9 8 7 6 3 1 1 16
16
15
12
10 9 8 7 6
NTH020
Inner
1+1
1+1
1+2
2+2
2+3
3+3
4+5
5+5
5+6
6+6
6+7
7+7
8+8
9+9
1+2
2+2
2+3
3+3
Outer
16
16
15
14
13
12 9 8 7 6 5 4 2 0
15
14
13
12
NTH030
Inner
1+2
1+2
2+2
2+3
3+3
3+4
5+5
5+6
6+6
6+7
7+8
7+8
8+9
10+10
10+10
10+11
3+3
3+4
Outer
19
19
18
17
16
15
12
11
10 9 7 7 5 2 2 1 16
15
NTH050
Inner (F)
0+1
1+1
1+2
2+3
3+4
4+4
4+5
5+5
5+6
Inner (R)
1+2
2+2
2+3
3+4
4+5
5+5
5+6
6+6
6+7
Outer 15
14
13
11 9 8 7 6
5
I-Beam
Width
(in)
16
11
6
6 ⅞
7
16
1
7
7 ¼
7 ⅞
8
16
7
8
16
11
8
9
9 ⅛
9 ⅞
10
10 ⅛
10 ¼
10 ⅜
10 ½
11
11 ⅛
11 ¼
11 ⅜
11 ⅝
11 ¾
16
13
11
7 ⅛
16
5
7
Cap.
(mm)
170
175
178
180
184
200
203
215
220
229
232
250
254
257
260
264
267
279
283
286
289
295
298
300
181
185
NTH010
Inner
10+10
11+11
11+12
12+12
4+5
7+7
7+8
9+9
10+10
11+12
12+12
7+7
7+8
8+8
8+9
9+9
9+10
11+12
12+12
4+4
4+5
5+6
6+7
6+7
Outer 4 2 1 0
15
10 9 6 4 1 0 10 9 8 7 6 5 1 0 16
15
13
11
11
NTH020
Inner
4+4
5+5
5+6
6+6
6+7
9+9
1+2
3+3
4+4
5+6
6+6
9+9
1+2
2+2
2+3
3+3
3+4
5+6
6+6
6+7
7+7
8+8
8+9
8+9
Outer
10 8 7 6 5 0 15
12
10 7 6 0 15
14
13
12
11 7 6 5 4 2 1
1
NTH030
Inner
4+5
5+6
6+6
6+7
7+8
9+10
10+10
3+4
4+5
6+6
6+7
9+10
10+10
10+11
11+11
3+4
4+4
6+6
6+7
7+7
7+8
8+9
9+9
9+10
Outer
13
11
10 9 7 3 2
15
13
10 9 3 2 1 0 15
14
10 9 8 7 5 4 3
NTH050
Inner (F)
6+7
7+8
8+8
0+0
1+1
3+4
4+4
5+6
6+7
8+8
0+0
3+4
4+4
4+5
5+5
5+6
6+6
8+8
0+0
0+1
1+2
2+3
3+3
3+3
Inner (R)
7+8
8+9
9+9
1+1
2+2
4+5
5+5
6+7
7+8
9+9
1+1
4+5
5+5
5+6
6+6
6+7
7+7
9+9
1+1
1+2
2+3
3+4
4+4
4+4
Outer 3 1 0 16
14 9 8 5 3 0 16 9 8 7 6 5 4 0 16
15
13
11
10
10
I-Beam
Width
(in)
11 ⅞
12
12 ¼
12 ½
12 ¾
13
13 ¼
13 ½
13 ¾
14
14 ¼
14 ½
14 ¾
15
15 ¼
15 ½
15 ¾
16
16 ¼
16 ½
16 ¾
17
Cap.
(mm)
302
305
311
318
324
330
337
343
350
356
362
368
375
381
387
394
400
406
413
419
426
432
NTH010
Inner
7+7
7+8
8+9
9+10
10+11
11+12
4+4
5+5
6+7
7+8
8+9
9+10
10+11
11+12
Outer
10 9 7 5 3 1 16
14
11 9 7 5 3 1
NTH020
Inner
9+9
1+2
2+3
3+4
4+5
5+6
6+7
7+8
8+9
1+2
2+3
3+4
4+5
5+6
6+7
7+8
8+9 Outer 0 15
13
11 9 7 5 3 1 15
13
11 9 7 5 3 1
NTH030
Inner
9+10
10+10
11+11
4+4
5+5
6+6
7+7
8+8
9+9
10+10
11+11
4+4
5+5
6+6
7+7
8+8
9+9
10+10
11+11
Outer 3 2 0 14
12
10 8 6 4 2 0 14
12
10 8 6 4 2 0
NTH050
Inner (F)
3+4
4+4
5+5
6+6
7+7
8+8
0+1
1+2
3+3
4+4
5+5
6+6
7+7
8+8
0+1
1+2
3+3
4+4
5+5
6+6
7+7
8+8
Inner (R)
4+5
5+5
6+6
7+7
8+8
9+9
1+2
2+3
4+4
5+5
6+6
7+7
8+8
9+9
1+2
2+3
4+4
5+5
6+6
7+7
8+8
9+9
Outer 9 8 6 4 2 0
15
13
10 8 6 4 2 0 15
13
10 8 6 4 2 0
13
Page 14
Figure 3-1 Twist in Load Chain – Double Fall Model
Figure 3-2 Capsized Hook and Chain – Double Fall Model
3.2 Chain
3.2.1
Verify that the load chain is not twisted or tangled prior to operating the hoist.
Make sure the bottom hook on the 2 (NTH020) through the 5 (NTH050) Ton multiple fall hoists is not
capsized. See Figures 3-1 and 3-2. Correct all chain irregularities before conducting the first hoist
operation.
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Page 15
3.3 Attachment Points & Mounting Location
3.3.1
components and supporting structure are adequate to support the hoist and its load. Prior to mounting
the trolley (and hoist) ensure that the trolley beam and its supporting structure are adequate to support
the trolley, hoist and its loads. If necessary consult a professional that is qualified to evaluate the
adequacy of the suspension location and its supporting structure.
3.3.2
Prior to attaching the hoist ensure that all attachment points, suspension
See Section 6.6 for outdoor installation considerations.
3.4 Installation of Trolley onto Beam
3.4.1 Assemble and adjust the trolley before attempting to install the trolley on the beam.
3.4.2 Preferred Method – Sliding the trolley connected with an electric chain hoist onto the traversing beam
from the beam end is the most convenient and recommended method. If the trolley can be mounted
from the end of the beam then: Remove the trolley end-stop from the beam and set the trolley on the
beam from the end. Securely re-install the trolley end stop on the beam.
3.4.3 Optional Method for Trolleys – If the trolley cannot be mounted from the end of the beam, complete the
installation as follows:
1) Remove the Shaft Stopper Pin from Suspension Shaft (See Figure 3-1).
2) If possible remove the outside Adjusting spacers and Reinsert the Shaft Stopper Pin. Spread the
trolley side plates apart.
3) Lift the trolley onto the beam so that Side Plate A rests on the beam's flange.
4) Hold Side Plate A securely so that it does not come off the beam then push the side plates
together so that all four wheels rest on the beam's flange.
5) Replace the Outside Adjusting Spacers and the Shaft Stopper Pin. Insert Split Pin, Bend the Split
Pin securely.
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Page 16
3.5 Preoperational Checks and Trial Operation
3.5.1
Confirm the adequacy of the rated capacity for all slings, chains, wire ropes and all
other lifting attachments before use. Inspect all load suspension members for damage prior to use and
replace or repair all damaged parts.
3.5.2
Verify and correct all chain irregularities prior to operating the hoist. Refer to
Section 3.1.
3.5.3 Measure and record the “k” dimension of all hooks on hoist. See Table 5-4 under Section 5,
“Inspection”.
3.5.4 Record the trolley-hoist's Code, Lot and Serial Number (from the name plate on the hoist; see Section
9) in the space provided on the cover of this manual.
3.5.5 Ensure that the hoist is properly installed to the trolley, the trolley is properly installed on the beam, and
stops for the trolley are correctly positioned and securely installed on the beam.
3.5.6 Ensure that all nuts, bolts and split pins (cotter pins) are sufficiently fastened.
3.5.7 Confirm proper operation.
Before operating read and become familiar with Section 4 - Operation.
Before operating ensure that the hoist meets the Inspection, Testing and Maintenance
requirements of ANSI/ASME B30.16.
Before operating ensure that nothing will interfere with the full range of the trolley’s and the hoist’s
operation.
3.5.8 Proceed with trial operation to confirm proper operation.
Operate the trolley though it's full range of motion. Make sure the trolley runs smoothly and does
not bind.
Perform inspections per Section 5.3, “Frequent Inspections”.
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Page 17
4.0 Operation
DO NOT WALK UNDER A SUSPENDED LOAD
HOIST OPERATORS SHALL BE REQUIRED TO READ THE OPERATION SECTION OF THIS MANUAL, THE
WARNINGS CONTAINED IN THIS MANUAL, INSTRUCTION AND WARNING LABELS ON THE HOIST OR
LIFTING SYSTEM, AND THE OPERATION SECTIONS OF ANSI/ASME B30.16 and ANSI/ASME B30.10. THE
OPERATOR SHALL ALSO BE REQUIRED TO BE FAMILIAR WITH THE HOIST AND HOIST CONTROLS
BEFORE BEING AUTHORIZED TO OPERATE THE HOIST OR LIFTING SYSTEM.
HOIST OPERATORS SHOULD BE TRAINED IN PROPER RIGGING PROCEDURES FOR THE ATTACHMENT
OF LOADS TO THE HOIST HOOK.
HOIST OPERATORS SHOULD BE TRAINED TO BE AWARE OF POTENTIAL MALFUNCTIONS OF THE
EQUIPMENT THAT REQUIRE ADJUSTMENT OR REPAIR, AND TO BE INSTRUCTED TO STOP OPERATION
IF SUCH MALFUNCTIONS OCCUR, AND TO IMMEDIATELY ADVISE THEIR SUPERVISOR SO CORRECTIVE
ACTION CAN BE TAKEN.
HOIST OPERATORS SHOULD HAVE NORMAL DEPTH PERCEPTION, FIELD OF VISION, REACTION TIME,
MANUAL DEXTERITY, AND COORDINATION.
HOIST OPERATORS SHOULD NOT HAVE A HISTORY OF OR BE PRONE TO SEIZURES, LOSS OF
PHYSICAL CONTROL, PHYSICAL DEFECTS, OR EMOTIONAL INSTABILITY THAT COULD RESULT IN
ACTIONS OF THE OPERATOR BEING A HAZARD TO THE OPERATOR OR TO OTHERS.
HOIST OPERATORS SHOULD NOT OPERATE A HOIST OR LIFTING SYSTEM WHEN UNDER THE
INFLUENCE OF ALCOHOL, DRUGS, OR MEDICATION.
• Read ANSI/ASME B30.16 and ANSI/ASME B30.10.
• Read the hoist manufacturer’s Operating and Maintenance Instructions.
• Read all labels attached to equipment.
4.1 Introduction
The operation of a hoist involves more than activating the hoist’s controls. Per the ANSI/ASME B30 standards, the use
of a hoist is subject to certain hazards that cannot be mitigated by engineered features, but only by the exercise of
intelligence, care, common sense, and experience in anticipating the effects and results of activating the hoist’s controls.
Use this guidance in conjunction with other warnings, cautions, and notices in this manual to govern the operation and
use of your hoist.
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Improper operation of a hoist can create a potentially hazardous
situation which, if not avoided, could result in death or serious injury,
and substantial property damage. To avoid such a potentially
hazardous situation THE OPERATOR SHALL:
4.2 Shall’s and Shall Not’s for Operation
• NOT lift more than rated load for the hoist.
• NOT use damaged hoist or hoist that is not working
properly.
• NOT use hoist with twisted, kinked, damaged, or
worn chain.
• NOT use hoist if the bottom hook is capsized
(multiple fall hoists - see Section 3.1).
• NOT leave load supported by the hoist unattended
unless specific precautions have been taken.
• NOT allow the chain, or hook to be used as an
electrical or welding ground.
• NOT allow the chain, or hook to be touched by a
live welding electrode.
• NOT remove or obscure the warnings on the hoist.
• NOT use the hoist to lift, support, or transport
people.
• NOT lift loads over people.
• NOT apply load unless load chain is properly
seated in the load sheave (and idle sheave for hoist
with multiple chain falls).
• NOT use the hoist in such a way that could result in
shock or impact loads being applied to the hoist.
• NOT attempt to lengthen the load chain or repair
damaged load chain.
• NOT operate hoist when it is restricted from forming
a straight line from hook to hook in the direction of
loading.
• NOT use load chain as a sling or wrap load chain
around load.
• NOT apply load if binding prevents equal loading
on all load-supporting chains.
• NOT operate beyond the limits of the load chain
travel.
• NOT support load on hook tip unless hook is
designed for tip loading.
• NOT use in a way that causes either hook to be
side-loaded.
• NOT operate a hoist on which the safety placards
or decals are missing or illegible.
• Be familiar with operating controls, procedures, and
warnings.
• Make sure the unit is securely attached to a
suitable support before applying load.
• Make sure load slings or other approved single
attachments are properly sized, rigged, and seated
in the hook saddle.
• Take up slack carefully - make sure load is
balanced and load-holding action is secure before
continuing.
• Make sure all persons stay clear of the supported
load.
• Protect the hoist’s load chain from weld splatter or
other damaging contaminants.
• Report Malfunctions or unusual performances
(including unusual noises) of the hoist and remove
the hoist from service until the malfunction or
unusual performance is resolved.
• Warn personnel before lifting or moving a load.
• Warn personnel of an approaching load.
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Improper operation of a hoist can create a potentially hazardous
situation which, if not avoided, could result in minor or moderate
injury, or property damage. To avoid such a potentially hazardous
situation THE OPERATOR SHALL:
• Maintain a firm footing or be otherwise secured
when operating the hoist.
• Check brake function by tensioning the hoist prior
to each lift operation.
• Use hook latches. Latches are to retain slings,
chains, etc. under slack conditions only.
• Make sure the hook latches are closed and not
supporting any parts of the load.
• Make sure the load is free to move and will clear all
obstructions.
• Avoid swinging the load or hook.
• Make sure hook travel is in the same direction as
shown on controls.
• Inspect the hoist regularly, replace damaged or
4.3 Hoist 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.
worn parts, and keep appropriate records of
maintenance.
• Use the hoist manufacturer’s recommended parts
when repairing the unit.
• Lubricate load chain per hoist manufacturer’s
recommendations.
• NOT use the hoist load limiting or warning device to
measure load.
• NOT allow your attention to be diverted from
operating the hoist.
• NOT allow the hoist to be subjected to sharp
contact with other hoists, structures, or objects
through misuse.
• NOT adjust or repair the hoist unless qualified to
perform such adjustments or repair.
NOTE: The clicking sound of the pawl when a load is being raised indicates normal operation.
4.4 Trolley Operation
1) For Plain Trolley, movement is controlled by pushing/pulling on the load or the hook of the attached hoist.
2) For Geared Trolley, when facing Trolley Hand Wheel:
Pull down on the right side of Hand Chain (Clockwise Rotation) to move the Trolley left.
Pull down on the left side of Hand Chain (Counterclockwise Rotation) to move the Trolley right.
3)
Avoid collisions with the end stops or other Trolleys. Damage may result.
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5.0 Inspection
5.1 General
5.1.1 The inspection procedure herein is based on ANSI/ASME B30.16. The following definitions are from
ANSI/ASME B30.16 and pertain to the inspection procedure below.
Designated Person – a person selected or assigned as being competent to perform the specific
duties to which he/she is assigned.
Qualified Person – a person who, by possession of a recognized degree or certificate of
professional standing, or who, by extensive knowledge, training, and experience, has successfully
demonstrated the ability to solve or resolve problems relating to the subject matter and work.
Normal Service – that distributed service which involves operation with randomly distributed loads
within the rated load limit, or uniform loads less than 65% of rated load for not more than 15% of
the time.
Heavy Service – that service which involves operation within the rated load limit which exceeds
normal service.
Severe Service – that service which involves normal or heavy service with abnormal operating
conditions.
5.2 Inspection Classification
5.2.1 Initial Inspection – prior to initial use, all new, altered, or modified hoists shall be inspected by a
designated person to ensure compliance with the applicable provisions of this manual.
5.2.2 Inspection Classification – the inspection procedure for hoists in regular service is divided into two
general classifications based upon the intervals at which inspection should be performed. The intervals
in turn are dependent upon the nature of the critical components of the hoist and the degree of their
exposure to wear, deterioration, or malfunction. The two general classifications are herein designated
as FREQUENT and PERIODIC, with respective intervals between inspections as defined below.
5.2.3 FREQUENT Inspection – visual examinations by the operator or other designated personnel with
intervals per the following criteria:
Normal service – monthly
Heavy service – weekly to monthly
Severe service – daily to weekly
Special or infrequent service – as recommended by a qualified person before and after each
occurrence.
5.2.4 PERIODIC Inspection – visual inspection by a designated person with intervals per the following
criteria:
Normal service – yearly
Heavy service – semiannually
Severe service – quarterly
Special or infrequent service – as recommended by a qualified person before the first such
occurrence and as directed by the qualified person for any subsequent occurrences.
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Table 5-1 Frequent Inspection
All functional operating mechanisms for proper operation and adjustment, maladjustment and
unusual sounds.
Hoist braking system for proper operation
Hooks and latches in accordance with ANSI/ASME B30.10
Hook latch operation
Load chain in accordance with Section 5.7
Load chain reeving for compliance with Section 3.1 and 6.4
Hoist support for damage
Connection points between Hoist and Trolley in accordance with ANSI/ASME B30.16
Table 5-2 Periodic Inspection
Requirements of frequent inspection.
Evidence of loose bolts, nuts, pins, or rivets.
Evidence of worn, corroded, cracked, or distorted parts such as load blocks, suspension housing,
chain attachments, clevises, yokes, suspension bolts, shafts, gears, bearings, pins, rollers, locking
and clamping devices, wheels, and bumpers.
Evidence of damage to hook retaining nuts or collars and pins, and welds or rivets used to secure
the retaining members.
Evidence of damage or excessive wear of load and idler sheaves.
Evidence of worn, glazed or oil contaminated friction disks; worn pawls, cams or ratchet; corroded,
stretched, or broken pawl springs in brake mechanism.
Evidence of damage to supporting structure.
Function label on hoist for legibility.
Warning label properly attached to the hoist and legible (see Section 1.2).
End connection of load chain.
5.3 Frequent Inspection
5.3.1 Inspections should be made on a FREQUENT basis in accordance with Table 5-1, “Frequent
Inspection.” Included in these FREQUENT Inspections are observations made during operation for
any defects or damage that might appear between Periodic Inspections. Evaluation and resolution of
the results of FREQUENT Inspections shall be made by a designated person such that the hoist is
maintained in safe working condition.
5.4 Periodic Inspection
5.4.1 Inspections should be made on a PERIODIC basis in accordance with Table 5-2, “Periodic Inspection.”
Evaluation and resolution of the results of PERIODIC Inspections shall be made by a designated
person such that the hoist is maintained in safe working condition.
5.4.2 For inspections where load suspension parts of the hoist are disassembled, a load test per ANSI/ASME
B30.16 must be performed on the hoist after it is re-assembled and prior to its return to service.
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Table 5-3 Hoist Inspection Methods and Criteria
Item
Method
Discard Limit/Criteria
Action
Functional
operating
mechanisms.
Visual, Auditory
Mechanisms should be properly adjusted and
should not produce unusual sounds when
operated. Components should not be deformed,
scarred, or show significant wear. Refer to
Figures 5-2, 5-3 and 5-4.
Repair or replace
as required.
Hook – Stretch
Measure
The "k" dimension should not be greater than 1.05
times that measured and recorded at the time of
purchase (See Section 3.4). If recorded "k" values
are not available for hooks when new, use nominal
"k" values from Table 5-4.
Replace.
Hook – Fretting
wear
Measure
The "u" and "t" dimensions should not be less than
discard value listed in Table 5-4.
Replace.
Hook – Surface
Condition
Visual
Should be free of gouges, deep nicks, dents, weld
splatter, and significant corrosion.
Replace.
Hook –
Deformation
Visual
Should be free of twists and deformations. See
Figure 5-1.
Replace.
Hook – Bent Shank
or Neck
Visual
Shank and neck portions of hook should be free of
deformations.
Replace.
5.5 Occasionally Used Hoists
5.5.1 Trolley-hoists that are used infrequently shall be inspected as follows prior to placing in service:
Trolley-hoist Idle More Than 1 Month, Less Than 1 Year: Inspect per FREQUENT Inspection
criteria in Section 5.3.
Trolley-hoist Idle More Than 1 Year: Inspect per PERIODIC Inspection criteria in Section 5.4.
5.6 Inspection Records
5.6.1 Dated inspection reports and records should be maintained at time intervals corresponding to those
that apply for the trolley-hoist’s PERIODIC interval per Section 5.2.4. These records should be stored
where they are available to personnel involved with the inspection, maintenance, or operation of the
hoist.
5.6.2 A long range chain inspection program should be established and should include records of
examination of chains removed from service so a relationship can be established between visual
observation and actual condition of the chain.
5.7 Inspection Methods and Criteria
5.7.1 This section covers the inspection of specific items. The list of items in this section is based on those
listed in ANSI/ASME B30.16 for the Frequent and Periodic Inspection.
5.7.2 Frequent Inspection - Not intended to involve disassembly of the hoist. Disassembly for further
inspection would be required if only if frequent inspection results so indicate. Disassembly and further
inspection should only be performed by a qualified person trained in the disassembly and re-assembly
of the hoist.
5.7.3 Periodic Inspection - Disassembly of the hoist is required. Disassembly should only be performed by a
qualified person trained in the disassembly and re-assembly of the hoist.
5.7.4 In accordance with ANSI/ASME B30.16, these inspections are not intended to involve disassembly of
the trolley. Rather, disassembly for further inspection would be required if frequent or periodic
inspection results so indicate. Such disassembly and further inspection should only be performed by a
qualified person trained in the disassembly and re-assembly of the trolley.
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Table 5-3 Hoist Inspection Methods and Criteria
Item
Method
Discard Limit/Criteria
Action
Hook – Swivel
Visual, Function
Bearing parts and surfaces should not show
significant wear, and should be free of dirt, grime,
and deformations. Hook should rotate freely with
no roughness. See Figure 5-1.
Clean/lubricate, or
replace as required.
Hook – Yoke
Assembly
Visual
Should be free of significant rust, weld splatter,
nicks, and gouges. Holes should not be
elongated, fasteners should not be loose, and
there should be no gap between mating parts.
Tighten or replace
as required.
Hook – Idle Sheave
and Shaft (Multiple
Fall Hoist)
Visual, Function
Pockets of Idle Sheave should be free of
significant wear. Idle Sheave surfaces should be
free of nicks, gouges, dirt, and grime. Bearing
parts and surfaces of Idle Sheave and Axle should
not show significant wear. Idle Sheave should
rotate freely with no roughness or significant free
play.
Clean/lubricate, or
replace as required.
Hook – Hook
Latches
Visual, Function
Latch should not be deformed. Attachment of
latch to hook should not be loose. Latch spring
should not be missing and should not be weak.
Latch movement should not be stiff - when
depressed and released latch should snap smartly
to its closed position.
Replace.
Yoke – Top Pin
Hole Deformation
Visual, Measure
The "d" dimension of the top pin hole should not
be greater than the discard value listed in Table 5-
5.
Replace Hook Set
Top Pin –
Deformation
Visual, Measure
The pin should be free of scars or significant
deformation. The “d" dimension should not be
less than discard value listed in Table 5-6.
Replace
Yoke – Chain Pin
Hole Deformation
Measure
The "d" dimension of the chain pin hole should not
be greater than the discard value listed in Table 5-
5.
Replace Hook Set
or yoke.
Chain Pin –
Deformation
Visual, Measure
The pin should be free of scars or significant
deformation. The “d" dimension should not be
less than discard value listed in Table 5-7.
Replace
Load Chain – Pitch
and Wire Diameter
Measure
The "P" dimension should not be greater than
discard value listed in Table 5-5. The "d"
dimension should not be less than discard value
listed in Table 5-8.
Replace. Inspect
Load Sheave (and
Idle Sheave for
multiple fall hoists).
Load Chain –
Surface Condition
Visual
Should be free of gouges, nicks, dents, weld
splatter, and corrosion. Links should not be
deformed, and should not show signs of abrasion.
Surfaces where links bear on one another should
be free of significant wear.
Replace.
Load Chain –
Lubrication
Visual, Auditory
Entire surface of each chain link should be coated
with lubricant and should be free of dirt and grime.
Chain should not emit cracking noise when
hoisting a load.
Clean/lubricate
(see Section 6.0).
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Table 5-3 Hoist Inspection Methods and Criteria
Item
Method
Discard Limit/Criteria
Action
Load Chain –
Reeving
Visual
Chain should be reeved properly through Load
Sheave. On multiple fall hoists chain should be
installed properly and free of twists. Refer to
Section 3.2.
Reeve/Install chain
properly.
Lifting System –
Components
Visual, Function
Components should not be deformed, scarred, or
show significant wear.
Replace.
Braking System –
Components
Visual
Brake Pawl, Pawl Pin, and Pawl Spring should not
be deformed, scarred, or show significant wear.
Refer to Figure 5-2 (27, 24, & 26).
Replace.
Brake – Damage to
Brake Surface
Visual
Damage due to scratching or gouging by foreign
matter. Refer to Figure 5-2 (32, 30, & 33).
Replace.
Braking System –
Friction Disc
Visual
The surface of the friction plate should be free of
scars, gouges, and wear. Refer to Figure 5-2 (29).
Replace.
Braking System –
Friction Plate
Visual, Measure
The surface of the friction plate should be free of
grease, oil, scars, gouges and wear and have
uniform thickness. The outer thickness should not
be thinner than the inner thickness. The thickness
should not be less than the discard value listed in
Table 5-9.
Replace.
Braking System –
Bushing
Measure
The bushing should have uniform thickness. The
“t” dimension should not be less than the discard
value listed in Table 5-10.
Replace.
Braking System –
Bushing
Visual
When slightly heated, the bushing should be so
lubricated that lubricant oozes off the surface.
Refer to Figure 5-2 (31). Type of oil to be used:
ISO VG68 or equivalent.
Soak bushing in
machine oil for one
day.
Braking System –
Ratchet Disc
Measure
The “D” dimension should not be less than the
discard value listed in Table 5-11.
Refer to Figure 5-2 (30).
Replace.
Load Sheave
Visual
Pockets of Load Sheave should be clean and free
of significant wear. Refer to Figure 5-3 (18).
Replace.
Load Gear
Visual
Teeth have excessive wear or damage. Refer to
Figure 5-4 (19).
Replace.
Hand Wheel
Visual
Large wear or deformation on the surface of hand
wheel. The hand wheel touches the cover.
Replace.
Housing and
Mechanical
Components
Visual, Auditory,
Function
Trolley-hoist components including suspension
shafts, track wheels, track wheel axles, load
blocks, suspension housing, chain attachments,
clevises, yokes, suspension bolts, shafts, gears,
bearings, stripper, pins, rollers, and bumpers
should be free of cracks, distortion, significant
wear, and corrosion. Evidence of same can be
detected visually or via detection of unusual
sounds during operation.
Replace.
Chain Guide
Visual
Excessive wear or press mark.
Replace.
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Table 5-3 Hoist Inspection Methods and Criteria
Item
Method
Discard Limit/Criteria
Action
Bolts, Nuts and
Rivets
Visual, Check with
Proper Tool
Bolts, nuts, snap rings, split pins, and rivets should
not be loose, deformed, or corroded.
Tighten or replace
as required.
Side Plates
Visual
Must be free of significant deformation
Replace.
Track Wheel Tread
Visual, Measure
Diameter of the inside and outside tread surface
should not be less than the discard value shown in
Table 5-12.
Replace.
Track Wheel - Gear
Visual
Teeth should not be cracked, damaged, or
excessively worn.
Replace.
Suspension Shaft
Visual, Measure
Suspension shaft should not be bent. Diameter
should not be worn by 10% or more.
Replace.
Warning Labels
Visual
Warning Labels should be affixed to the hoist (see
Section 1.2) and they should be legible.
Replace.
Trolley-Hoist
Capacity Label
Visual
The label that indicates the capacity of the hoist
should be legible and securely attached to the
hoist.
Replace.
Twisted Hook
Hook Swivel
Figure 5-1 Bottom Hook Checks
Table 5-4 Top Hook & Bottom Hook Dimensions
“k” Measured When New:
Bottom: ______________________
Product Code
Nominal "k"
Dimension*
inch (mm)
"u" Dimension
inch (mm)
"t" Dimension
inch (mm)
Standard
Discard
Standard
Discard
NTH010
1.92 (48.8)
0.86 (21.8)
0.79 (20.0)
0.63 (16.0)
0.57 (14.4)
NTH020
2.36 (59.9)
1.18 (30.0)
1.06 (27.0)
0.87 (22.0)
0.78 (19.8)
NTH030
2.72 (69.1)
1.48 (37.5)
1.34 (34.0)
1.06 (27.0)
0.96 (24.3)
NTH050
3.06 (77.8)
1.87 (47.5)
1.69 (43.0)
1.38 (35.0)
1.24 (31.5)
* These values are nominal since the dimension is not controlled to a tolerance. The "k"
dimension should be measured when the hook is new - this becomes a reference measurement.
Subsequent measurements are compared to this reference to make determinations about hook
deformation/stretch. See Section 5.7, “Hooks - Stretch”.
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Page 26
Table 5-5 Chain Pin Hole and Top Pin Hole Wear Dimensions
Product Code
Hole Diameter (d)
Chain Pin Hole
inch (mm)
Top Pin Hole
inch (mm)
Standard
Discard
Standard
Discard
NTH010, NTH020
0.319 (8.1)
0.339 (8.6)
0.480 (12.2)
0.500 (12.7)
NTH030, NTH050
0.350 (8.9)
0.370 (9.4)
0.638 (16.2)
0.658 (16.7)
Table 5-6 Body Top Pin Wear Dimensions
Product Code
“d” Dimension
inch (mm)
Standard
Discard
NTH010, NTH020
0.472 (12)
0.433 (11)
CF030, CF050
0.630 (16)
0.591 (15)
Table 5-7 Chain Pin Wear Dimensions
Product Code
“d” Dimension
inch (mm)
Standard
Discard
NTH010, NTH020
0.311 (7.9)
0.295 (7.5)
NTH030, NTH050
0.343 (8.7)
0.327 (8.3)
Table 5-8 Chain Wear Dimensions
Product Code
“P” Dimension
inch (mm)
“d” Dimension
inch (mm)
Standard
Discard
Standard
Discard
NTH010, NTH020
3.76 (95.5)
3.85 (97.9)
0.25 (6.3)
0.22 (5.7)
NTH030, NTH050
4.18 (106.2)
4.29 (108.9)
0.28 (7.1)
0.26 (6.5)
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Figure 5-2 Brake Assembly
Table 5-9 Friction Plate Wear Dimensions
Product Code
Thickness
inch (mm)
Standard
Discard
All
0.118 (3.0)
0.098 (2.5)
Table 5-10 Brake Bushing Wear Dimensions
Product Code
A Dimension
inch (mm)
Standard
Discard
CF010, CF020,
CF030, CF050
0.157 (4.0)
0.118 (3.0)
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Table 5-11 Brake Ratchet Disc Wear Dimensions
Product Code
D Dimension
inch (mm)
Standard
Discard
CF010, CF020,
CF030, CF050
3.858 (98)
3.740 (95)
Figure 5-3 Pocket Wheel
Figure 5-4 Load Gear Assembly
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Page 29
Table 5-12 Track Wheel Wear Dimensions
Note: Track wheels are for flat and tapered flanges.
Capacity
(Ton)
“D” Dimension
inch (mm)
“t” Dimension
inch (mm)
“r” Dimension
inch (mm)
Standard
Discard
Standard
Discard
Standard
Discard
1
2.80 (71)
2.74 (69.5)
0.374 (9.5)
0.264 (6.7)
0.224 (5.7)
0.158 (4.0)
2
3.35 (85)
3.29 (83.5)
0.413 (10.5)
0.291 (7.4)
0.232 (5.9)
0.161 (4.1)
3
3.94 (100)
3.88 (98.5)
0.453 (11.5)
0.319 (8.1)
0.260 (6.6)
0.181 (4.6)
5
4.65 (118)
4.41 (112)
0.591 (15.0)
0.413 (10.5)
0.370 (9.4)
0.260 (6.6)
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Figure 6-1 Chain Grease Application
Table 6-1 General Lubrication
Parts to be Lubricated
Name of Oil
Amount of Lubrication
and Lubricating Method
Frequency of
Lubrication
Mechanical Brake Parts:
Ratchet Disc, Pawl Pin,
Screw parts of Pinion
Machine or
Gear Oil
Wipe off oil with waste
cloth after applying
proper amount of oil.
When the hand pull
becomes extremely heavy
in lowering operations.
6.0 Maintenance and Handling
6.1 Lubrication
6.1.1 Load Chain
For longer life, the load chain should be lubricated.
The load chain lubrication should be accomplished after cleaning the load chain with an acid free
cleaning solution.
Apply Harrington lubricating grease (Part No. ER1BS1951) or an equivalent to industrial general
lithium grease, NLGI No. 0, to the bearing surfaces of the load chain links as indicated by the
shaded areas in Figure 6-1. Also apply the grease to the areas of the load chain (shaded areas in
Figure 6-1) that contact the load sheave. Insure that the grease is applied to the contact areas in
the load sheave pockets.
Machine or gear oil (grade ISO VG 46 or 68 oil or equivalent) may be used as an alternative
lubricant but must be applied more frequently.
The chain should be lubricated every 3 months (more frequently for heavier usage or severe
conditions).
For dusty environments, it is acceptable to substitute a dry lubricant.
6.1.2 Hooks and Suspension Components:
Hooks – Bearings should be cleaned and lubricated at least once per year for normal usage.
Clean and lubricate more frequently for heavier usage or severe conditions.
Suspension Pins - Lubricate the chain pin and the top pin at least twice per year for normal usage;
more frequently for heavier usage or severe conditions.
6.1.3 Applying Grease to Hoist Gears:
Remove body B as instructed in Section 6.3.
Remove old grease and replace the new grease (NLGI No. 2), at annual inspection.
Temperature range of standard grease is -20˚C (-4˚F) to + 60˚C (140˚F). If the hoist is used at
temperatures below -20˚C (-4˚F) or above 60˚C (140˚F), consult the manufacturer or dealer since
some parts should be changed.
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Table 6-2 Tools Required for Hoist Disassembly
No.
Tool
Operation
1
Snap ring pliers
Opening a snap ring
2
Metric socket wrenches
Slotted nuts
3
Metric hex keys (Allen wrenches)
Socket head cap screws
4
Metric wrenches
Bolts and nuts
5
Phillips screwdriver
Machine screws
6
Pliers (Needle Nose)
Split pins
7
Soft-face (Dead blow) hammer
8
Wooden Blocks
Elevate hoist
6.1.4 Trolley:
Lubricate the following trolley components with NLGI (National Lubricating Grease Institute) #2 or
equivalent grease.
Track Wheel Gear – Clean and re-grease the Track Wheel gears and Hand Wheel output pinion
every three months (more frequently for heavier usage or severe conditions). Do not use an
excessive amount of grease and avoid getting any grease on the running surfaces of the Track
Wheels or the beam.
Trolley Wheel Bearings do not need to be lubricated and must be replaced if worn or damaged.
Suspension Pins, Bolts and Shafts – Grease at least twice per year for normal usage (more
frequently for heavier usage or severe conditions).
6.2 Disassembly, Assembly and Adjustment
6.2.1
1) Perform proper disassembly or assembly in accordance with this manual.
2) The hoist utilizes dry friction plates; they are not to be lubricated.
3) Do not extend the load chain.
4) Remove old grease on the disassembled parts.
5) Replace components with Harrington Hoist approved parts.
6) To reassemble, apply new grease, and use a new split pin and snap ring.
6.2.2 Tools – The following tools are required to disassemble/reassemble the hoist.
6.3 Hoist Disassembly
Proceed as follows (Note: Figures in brackets are Figure Numbers in Parts List):
1) Orient a hoist with wheel cover side up.
2) Unscrew three screws [38] (with spring washers [39]) that attach the wheel cover [37].
3) Remove the wheel cover [37] from the body A [10].
4) Insert a vertical link of the hand chain [43] into the notch of the hand wheel [33] and remove the
hand chain by turning the hand wheel counterclockwise.
NOTE: Bring the notch of the hand wheel to the right hand side.
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5) Pull out split pin [36] from the wheel stopper pin [35] and remove the wheel stopper pin and wheel
stopper [34] from the pinion [14].
6) Remove the hand wheel [33] from the pinion [14] by turning the hand wheel counterclockwise.
NOTE: If the hand wheel is too tight to turn by hand, put hand chain on the hand wheel again and pull
it down hard. It will release the brake.
7) Remove two friction plates [32], ratchet disc [30] and bushing [31] from the friction disc [29].
8) Remove the friction disc [29] from the pinion [14] by turning counterclockwise holding the end of the
pinion with your fingers.
9) Remove snap ring [28] from the pawl pin [24] (on the body A [10]) and then remove pawl [27] and
pawl spring [26].
10) Unscrew the pawl pin [24].
NOTE: The pawl pin is fixed with the U nut [25].
11) Unscrew four socket bolts [22, 22-A] connecting body A [10] and B [11].
NOTE: Four socket bolts are fixed with U nuts [23] on the body B side.
12) Separate the body A [10] and B [11].
13) Take ball bearing A [15] and C [17-A] out of the body A [10] (only if bearing needs replaced).
14) Remove the suspender and top pin [3] from the body B [11].
15) Remove pinion [14], chain guide [20] (or guide rollers [20-A]), stripper [21], tail pin [40], and load
chain [42].
16) Remove the frame [13].
17) Take load sheave [18] out of the load gear [19].
18) Remove the load gear [19].
19) Unscrew tap socket bolt [41] from the body B [11].
20) Pull split pin [9] out of the slotted nut [8] and remove the slotted nut and chain pin [7] from the
bottom hook [4].
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) Wipe off old grease from the body B [11] and frame [13].
2) Apply new grease to the ball bearing B [16] and C [17] on the body B [11].
3) Insert load sheave [18] into the load gear [19] and put them together on the ball bearing C [17].
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Figure 6-3 Bottom Hook Assembly
Figure 6-2 Load Gear Assembly
4) Apply new grease to the load gear [19].
5) Put frame [13] on the body B [11] according to pattern.
6) Insert the end of the load chain [42] to the bottom hook [4] and fix them with the chain pin [7],
slotted nut [8] and split pin [9].
7) Place the load chain [42] on the load sheave [18] so that the bottom hook side comes to right hand
and the end link of the other side becomes vertical to the load sheave pocket.
: Always bend the split pin securely.
: Put the welded part of the vertical chain link outward.
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Figure 6-4 Load Chain Assembly
Figure 6-5 Chain Guide Assembly
8) Put chain guide [20] (or guide rollers for ½ ton [20-A]) on the frame [13].
9) Put stripper [21] on the frame [13].
10) Insert pinion [14] shaft from its gear side through the frame [13] and into ball bearing B [16].
11) Insert top pin [3] into the frame [13] and put suspender to the top pin.
12) Clean and grease ball bearing A [15] and D [17-A] and insert into body A [10] (if being replaced).
13) Put the body A [10] with the ball bearings [15, 17-A] side down on the body B [11].
: Fit the larger boss of chain guide [20] into holes on frame [13].
: Make sure each part is completely set between body A [10] and frame [13].
14) Insert four socket bolts [22, 22-A] into the body A [10] and turn the whole body sideways. Then fix
the bolts with the U nuts [23] holding the U nuts with fingers.
to the lower holes.
: Insert short socket bolts [22-A] to the upper holes and long socket bolts [22]
34
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Figure 6-6 Body “A” Assembly
Figure 6-7 Brake Assembly
15) Insert pawl pin [24] into the body A [10] and fix it with the U nut [25].
16) Apply machine oil to the pawl pin [24] and join pawl spring [26] and the pawl [27] respectively to it.
Fix the pawl with snap ring [28].
at the groove of the pawl pin.
17) Thread friction disc [29] on the pinion [14].
18) Wipe out any dirt on the friction disc [29], friction plates [32] and both sides of the ratchet disc [30]
and make sure that bushing [31] is properly soaked with oil. Then place the friction plate, bushing,
ratchet disc (while the pawl [27] is rotated counterclockwise), and friction plate respectively on the
friction disc. (Make sure that the pawl meshes with the ratchet disc properly.)
and dirt on the brake. The gear of the ratchet should point at the pawl. Otherwise, the hand wheel
cannot be assembled later.
In case the bushing does not have oil inside, soak it in turbine oil for a day. Install it without wiping the
oil. Make sure that the pawl meshes with the ratchet disc properly.
: Make sure the pawl spring is fixed to the pawl and the snap ring is securely set
: NEVER apply oil since the brake is a “dry system”. Thoroughly wipe out any oil
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Figure 6-8 Hand Wheel Assembly
Figure 6-9 Body “B” Assembly
19) Remove the dirt from the hand wheel [33] and apply machine oil to the threaded part. Assemble
onto the pinion shaft [14] by turning it clockwise as far as possible.
20) Place wheel stopper [34] on the head of the pinion [14], insert wheel stopper pin [35] and fix it with
a split pin [36].
: NEVER forget to bend the split pin after inserting into the wheel stopper pin.
21) Set the notch of the hand wheel to the left hand side. Insert the vertical link of the hand chain [43]
into the notch of the hand wheel [33] and reeve the hand chain by turning the hand wheel
clockwise.
NOTE: Make sure welds on hand chain are to the outside of the hand wheel.
22) Put wheel cover [37] on the body A [10] and fix them with the spring washers [39] and screws
[38].
23) Put a hoist with body B [11] side up. Place the slack end of the load chain between body A [10]
and body B [11]. Then insert tail pin [40], and screw tap socket bolt [41] into the body B.
: Make sure the load chain is not twisted. Be careful not to cross thread or over
torque tap socket bolt [41].
36
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6.5 Storage
6.5.1
: IMPROPER chain hoist use could result in death or serious injury. To avoid these
hazards:
ALWAYS store the hoist in a no load condition.
ALWAYS wipe off all dirt and water.
ALWAYS oil the chain, hook pins and hook latches.
ALWAYS hang in a dry place.
ALWAYS check the hoist for abnormalities (according to the regular inspection procedures) when
using the hoist after a period of non-use (Refer to section 5.5).
6.6 Outdoor Installation
6.6.1 For hoist installations that are outdoors, the hoist should be covered or brought inside when not in use.
6.6.2 Possibility of corrosion on components of the hoist increases for installations where salt air and high
humidity are present. Make frequent and regular inspections of the hoist’s condition and operation
37
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Read and comply with instructions in this manual and use the hoist properly.
Checking the sounds from the hoist in operation is a critical inspection. Note hoist sounds during operation.
If a defect is found in the hoist, stop using it immediately and check the cause of the defect.
Only Trained and competent personnel should inspect and repair the hoist.
Table 7-1 Troubleshooting Guide
Note on proper operation:
When lifting, the hoist should make clicking sounds when moving the hand wheel.
When lowering, the hoist should not make clicking sounds when moving the hand wheel.
Symptom
Cause
Remedy
Hoist will not lift –
Slight clicking
Improper assembly of ratchet disc, disc
installed backwards, and making incorrect
contact with the pawl.
Reassemble the pawl and ratchet disc
properly. Ensure that clicking sounds are
heard before reuse.
Hoist will not lift –
Not Clicking
Pawl not engaging ratchet disc:
Dirt or corrosion between pawl and pawl
shaft.
Clean and lubricate pawl and pawl shaft.
Pawl shaft
Pawl
Faulty pawl spring
Replace pawl spring
Loose selector pawl spring
Perform hoist maintenance.
Hoist will lift
intermittently –
Slight or irregular
clicking
Poor pawl movement caused by faulty pawl
spring. The spring is loose or damaged.
Perform maintenance and/or repair.
Mis-assembly of pawl spring
Reassemble it properly and ensure to check
click sound of the pawl before reuse.
7.0 Troubleshooting
38
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Table 7-1 Troubleshooting Guide
Symptom
Cause
Remedy
During operation, hoist
idles or load drifts
Poor load sheave and load chain contact
caused by improper chain-reeving.
Reassemble properly and ensure proper
lifting before reuse.
Hoist will not lift all the
way (multiple fall
hoists)
Capsized hook
Reset the capsized hook.
Twisted Chain
Capsized Hook and Chain
Double Fall Models
Hoist does not lift load
smoothly.
Improper assembly of gear OR bearing
broken.
Disassemble and reassemble gear train
and/or replace bearing.
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Table 7-1 Troubleshooting Guide
Improper braking may cause improper load lowering. The hoist utilizes dry friction discs; do not
apply oil to friction surfaces.
Symptom
Cause
Remedy
Load will not go down
Over tightened brake
The hoist left under load for a long period
Shock loaded during operation
Pull down hard (possibly with 2 people) on
the hand chain to loosen brake.
Brake rusted tight
Replace the rusty components and perform
hoist maintenance.
Load drifts or slips
when lowering
A foreign object between friction surfaces.
Remove the object and clean the surfaces.
Replace if the friction surface is scarred.
Brake slip caused by significant rust
Replace the rusty component and perform
hoist maintenance.
Mis-assembly of friction plates, i.e. friction
plates missing or at one side as shown.
Reassemble properly as shown and ensure
hoist functions properly before reuse.
Cracked friction plate caused by overload
Replace the friction plate and use the hoist
properly within rated capacity.
Friction plate wear caused by very frequent
and long term use.
Perform hoist maintenance.
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8.0 Warranty
All products sold by Harrington Hoists, Inc. are warranted to be free from defects in material and
workmanship from date of shipment by Harrington for the following periods:
Manual Hoists & Trolleys - 2 years
Air and Electric Powered Hoists, Trolleys, and Crane Components - 1 year
Spare / Replacement Parts - 1 year
The product must be used in accordance with manufacturer’s recommendations and must not have
been subject to abuse, lack of maintenance, misuse, negligence, or unauthorized repairs or
alterations.
Should any defect in material or workmanship occur during the above time period in any product,
as determined by Harrington Hoist’s inspection of the product, Harrington Hoists, Inc. agrees, at its
discretion, either to replace (not including installation) or repair the part or product free of charge
and deliver said item F.O.B. Harrington Hoists, Inc. place of business to customer.
Customer must obtain a Return Goods Authorization as directed by Harrington or Harrington’s
published repair center prior to shipping product for warranty evaluation. An explanation of the
complaint must accompany the product. Product must be returned freight prepaid. Upon repair,
the product will be covered for the remainder of the original warranty period. If it is determined
there is no defect, or that the defect resulted from causes not within the scope of Harrington’s
warranty, the customer will be responsible for the costs of returning the product.
Harrington Hoists, Inc. disclaims any and all other warranties of any kind expressed or implied as to
the product’s merchantability or fitness for a particular application. Harrington will not be liable for
death, injuries to persons or property or for incidental, contingent, special or consequential
damages, loss or expense arising in connection with the use or inability whatever, regardless of
whether damage, loss or expense results from any act or failure to act by Harrington, whether
negligent or willful, or from any other reason.
41
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This Page Intentionally Left Blank
42
Page 43
9.0 Parts List
Figure 9-1 NTH4 Nameplate
When ordering Parts, please provide the Hoist code number, lot number and serial number located on the Hoist
nameplate (see Figure 9-1 below).
Reminder: Per Sections 1.1 and 3.4.4 to aid in ordering parts and product support, record the hoist Code, Lot and Serial
Number in the space provided on the cover of this manual.
The parts list is arranged into the following sections:
Section Page
9.1 1 to 5 Ton Parts………………….…………………………………………………...……….……….... 44
9.2 Additional 2 through 5 Ton Parts…………………………………….………………………………… 46
9.3 Trolley Parts…………………………………….……………………………………………………… 47
9.4 Optional Hooks…………………………………….………………………………….….…….……… 49
9.5 Optional Chain Containers…………………………………………………………….….…….……… 50
43
Page 44
9.1 1 to 5 Ton Parts
Figure 9-2 1 to 5 Ton Parts
44
Page 45
9.1 1 to 5 Ton Parts
Fig.
No.
Name
Parts /
Hoist
1Ton
2 Ton
3 Ton
5 Ton
1
Suspender
1
50604
50622
50679
50725
3
Top Pin 1 CF163010
CF163015
4
Bottom Hook Complete Set
1
M3021A010
6
Latch Assembly
1
CF071010
7
Chain Pin
1
M3041010
8
Slotted Nut
1
M2049010
9
Split Pin
1
9009411
10
Body A 1 CF101010
CF101015
11
Body B 1 CF102010
CF102015
12
Name Plate
- Blank
without rivets
1
CF800010B
CF800020B
CF800030B
CF800050B
with rivets
1
CF4800010
CF4800020
CF4800030
CF4800050
13
Frame 1 CF105010
CF105015
14
Pinion
1
CF111010**
CF111015**
CF111050**
CF4111010*
CF4111015*
CF4111050*
15
Ball Bearing A
1
9000103
16
Ball Bearing B 1 9000201
9000202
9000300
17
Ball Bearing C
1
9000105
9000106
17A
Ball Bearing D
1
9000105
9000106
18
Load Sheave 1 CF116010
CF116015
CF116A050
19
Load Gear 1 CF114010
CF114015
CF116A050
20
Chain Guide 1 CF178010
CF178015
21
Stripper 1 CF162010
CF162015
22
Socket Bolt for Body
2
9091284
9091285
22A
Socket Bolt for Body
2
9091282
9091283
23
U-Nut for Body
4
9098506
24
Pawl Pin
1
CF156005
25
U-Nut for Fig. 24
1
9098506
26
Pawl Spring
1
CF158005
27
Pawl
1
CF155005
28
Snap Ring for Fig. 24 1 9047108
29
Friction Disc
1
CF153010**
M3153020*
30
Ratchet Disc
1
CF152010**
CF4152010*
31
Bushing for Ratchet Disc 1 M3154020*
32
Friction Plate
2
M3151020*
1
CF151010**
32-A
Friction Plate
1
CF150010**
33
Hand Wheel
1
CF115010**
CF115015**
CF4115010*
CF4115015*
34
Wheel Stopper
1
CF159010
35
Wheel Stopper Pin
1
M2167005
36
Split Pin for Fig. 35
1
9009401
37
Wheel Cover 1 CF171010
CF171015
38
Screw for Fig. 37
3
CF187005
39
Spring Washer for Fig. 37 3 9012709
40
Tail Pin 1 CF164010
CF164015
41
Socket Bolt for Fig. 40 1 CF181010
42
Load Chain
ft.
LCCF010
LCCF015
43
Hand Chain
ft.
HCCF005
77
Warning Tag
1
WTAG9
78
Chain Stopper Link
1
L4045030
*CF4 model only
**Parts discontinued
45
Page 46
9.2 Additional 2 through 5 Ton Parts
Figure 9-3 Additional 2 through 5 Ton Parts
Fig.
No.
Name
Parts /
Hoist
2 Ton
3 Ton
5 Ton
44
Suspender
1
50622
50679
46
Chain Pin
1
CF041020
M3041030
47
Slotted Nut for Fig. 46
1
M2049010
48
Split Pin for Fig. 46 1 9009411
49
Bottom Hook Complete Set
1
CF021A020
M3021A030
50
Bottom Yoke
2
CF031020
M3031030
51
Bolt 2 9091274
9091296
52
U-Nut 2 9098506
9098508
53
Shaft 1 CF053020
CF053030
54
Spring Pin 1 CF083020
55
Idle Sheave
1
CF051020
CF051030
56
Bottom Hook Assembly
1
CF021020
M3021030
57
Latch Assembly
1
CF071020
CF071030
58
Suspender Assembly
1 50727
59
Suspender 1
50725
60
Idle Sheave Bracket L.H.
1 5072601
61
Idle Sheave 1
CF051030
62
Shaft
1 CF053050
63
Spring Pin 1
CF083020
64
Bolt
2 9093153
65
Lock Nut 2
9098511
66
Idle Sheave Bracket R.H.
1 5072602
68
Bottom Hook Complete Set
1 CF021A050
69
Bottom Yoke Assembly
1 CF031050
70
Idle Sheave 1
CF051030
71
Shaft
1 CF053050
72
Spring Pin 1
CF083020
73
Socket Bolt 2
9091296
74
U-Nut
2 9098508
75
Bottom Hook Assembly
1 M3021050
76
Latch Assembly 1
CF071050
46
Page 47
9.3 Trolley Parts
Figure 9-3 Trolley Parts
Fig.
No.
Name
Parts /
Hoist
1Ton
2 Ton
3 Ton
5 Ton
78
Side Plate A
1
50600
50619
50685
50722
79
Track Wheel S Assembly
2
T3P1102010
T3P1102020
T3P1102030
T3P1102050
80
Washer
4
MS104010
MS104020
MS104030
MS104050
81
Snap Ring
2
T3P106010
T3P106020
T3P106030
T3P106050
83
Snap Ring
2
T3P106010
T3P106020
T3P106030
T3P106050
84
Washer
4
MS104010
MS104020
MS104030
MS104050
85
Track Wheel S Assembly
2
T3P1102010
T3P1102020
T3P1102030
T3P1102050
86
Side Plate B
1
50601
50620
50676
50723
87
Nameplate
1
NTH800010
NTH800020
NTH800030
NTH800050
88
Adjusting Spacer
36
9005212
T3P116010
9005215
34 50736
90
Lock Nut
2
9098506
91
Split Pin
2
T3P157010
T3P157020
T3P157030
T3P157050
92
Bolt 2 9093102
9093104
9093354
9093129
93
Suspension Shaft 2 See Suspension Shaft Sizing Chart
94
Shaft Stopper Pin
2
T3P156010
T3P156020
T3P156030
T3P156050
Fig.
No.
Name
Parts /
Hoist
1Ton
2 Ton
3 Ton
5 Ton
96
Nut
1
T3G259010
97
Washer
1
9012515
98
Hand Wheel
1
T3G123010
99
Side Plate G
1
50600G
50619G
50675
50721
100
Pinion
1
T3G121020
101
Track Wheel G Assembly
2
T3G1101010
T3G1101020
T3G1101030
T3G1101050
102
Washer
4
MS104010
MS104020
MS104030
MS104050
103
Snap Ring
4
T3P106010
T3P106020
T3P106030
T3P106050
104
Hand Chain
ft.
HCCF005
Push Trolley Parts
Geared Trolley Parts
47
Page 48
9.3 Trolley Parts
Fig.
No.
Parts /
Hoist
1Ton
2 Ton
3 Ton
5 Ton
Flange Range
(inches)
Part #
Flange Range
(inches)
Part #
Flange Range
(inches)
Part #
Flange Range
(inches)
Part #
93
2
2.32 to 5.16
5060501
3.72 to 5.97
5062401
3.62 to 6.26
5068001
5.12 to 7.11
5072901
5.17 to 7.16
5060502
5.98 to 7.97
5062402
6.27 to 8.26
5068002
7.12 to 9.11
5072902
7.17 to 9.16
5060503
7.98 to 9.97
5062403
8.27 to 10.26
5068003
9.12 to 11.11
5072903
9.17 to 11.16
5060504
9.98 to 11.97
5062404
10.27 to 12.26
5068004
11.12 to 13.11
5072904
11.17 to 13.16
5060505
11.98 to 13.97
5062405
12.27 to 14.26
5068005
13.12 to 15.11
5072905
13.17 to 15.16
5060506
13.98 to 15.97
5062406
14.27 to 16.26
5068006
15.12 to 17.11
5072906
Suspension Shaft Sizing Chart
48
Page 49
9.4 Optional Hooks
Figure 9-4 Bullard®, Shur-Loc® and Inspection Hooks
Fig. No.
Name
Parts
Per
Hoist
1 Ton
2 Ton
3 Ton
5 Ton
7
Bullard® Bottom Hook
Complete Set
1
6027802
6027805
6027807
6027808
8 Bullard® Hook Assembly
1
60162
60165
60168
60169
9 Bottom Yoke Kit
1
BYKITCB010
10
Button Head Screw
4
9012601
11
Flexloc® Nut
4
9012603
12
Warning Tag* 1 WTAG6*
Fig. No.
Name
Parts
Per
Hoist
1 Ton
2 Ton
3 Ton
5 Ton
7
Shur-Loc® Bottom Hook
Complete Set
1
6030102
6030105
6030107
8
Shur-Loc® Hook
Assembly
1
60142
60145
60148
9 Bottom Yoke Kit
1
BYKITCB010
10
Button Head Screw
4
9012601
11
Flexloc® Nut
4
9012603
12
Warning Tag 1 WTAG6*
Fig. No.
Name
Parts
Per
Hoist
1 Ton
2 Ton
3 Ton
5 Ton
6
Bottom Hook Complete
Set
1
M3021A010IK
7 Hook W/Latch & Yoke
1
M3021A010IH
8 Button Head Screw
2
9012601
9 Flexloc® Nut
2
9012603
Bullard® Hooks
` *Hoist with Bullard® Hook(s) must have WTAG6 and WTAG9 installed. (See page 6 for WTAG9).
Shur-Loc® Hooks
*Hoist with Shur-Loc® Hook(s) must have WTAG6 and WTAG9 installed. (See page 6 for WTAG9).
Inspection Hooks
49
Page 50
9.5 Optional Chain Containers
Figure 9-5 CF4 Optional Chain Container
Fig. No.
Name
Parts
Per
Hoist
1 Ton
2 Ton
3 Ton
5 Ton
“05” Chain Container
(BKC1) Assembly
1
60713
60713
60715
1
Chain Container
1
50810
50810
50810
2
Modified Stripper Ass’y
1
5076004
5076004
5080404
3
Split Pin
1
9009412
9009412
9009412
4
Washer, 1/4
1
9005205
9005205
9005205
5
Link 1 5076005
5076005
5076005
6
Washer, M8
2
9012513
9012513
9012513
7
Hex Head Bolt
1
9093328
9093328
9093328
8
Lock-Nut
1
9098506
9098506
9098506
“10” Chain Container
(BKD1) Assembly
1
60714
60714
60716
1
Chain Container
1
5080403
5080403
5080403
2
Modified Stripper Ass’y
1
5076004
5076004
5080404
3
Split Pin
1
9009412
9009412
9009412
4
Washer, 1/4
1
9005205
9005205
9005205
5
Link 1 5076005
5076005
5076005
6
Washer, M8
2
9012513
9012513
9012513
7
Hex Head Bolt
1
9093328
9093328
9093328
8
Lock-Nut
1
9098506
9098506
9098506
NTH OPTIONAL “05” & “10” CHAIN CONTAINERS
50
Page 51
9.5 Optional Chain Containers
Figure 9-6 CF4 Optional Chain Container
Fig. No.
Name
Parts
Per
Hoist
1 Ton
2 Ton
3 Ton
5 Ton
“15” Chain Container
(BKC1) Assembly
1
60717
60718
60719
60720
1
Modified Stripper Ass’y
1
5087605
5087605
*
6007702
2
Suspension Bracket
1
5087606
5087608
*
6007704
3
Flat Washer
1
9012514
9012514
9012514
9012514
4
Lock Nut
1
9098508
9098508
9098508
9098508
5
Bolt 2 9093327
9093327
9093327
9093327
6
Lock Nut
2
9098506
9098506
9098506
9098506
7
Lock Washer
2
9012711
9012711
9012711
9012711
8
Chain Container
1
5087601
5087601
5087601
5087601
NTH OPTIONAL “15” CHAIN CONTAINERS
*Available on request
51
Page 52
NOTES
52
Page 53
NOTES
53
Page 54
NOTES
54
Page 55
NOTES
55
Page 56
NOTES
56
Page 57
NOTES
57
Page 58
www.harringtonhoists.com
Harrington Hoists, Inc. Harrington Hoists – Western Division
401 West End Avenue 2341 Pomona Rd. #103
Manheim, PA 17545-1703 Corona, CA 92880-6973
Phone: 717-665-2000 Phone: 951-279-7100
Toll Free: 800-233-3010 Toll Free: 800-317-7111
Fax: 717-665-2861 Fax: 951-279-7500
NTHOM
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