EFFECTIVE: March 17, 2008 NAVY TROLLEY HOIST MODEL NTH 1 Ton through 5 Ton Capacity Code, Lot and Serial Number 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.
Table of Contents Section 1.0 2.0 3.0 4.0 5.0 Page Number Important Information and Warnings ……………………………………………………………………… 4 1.1 Terms and Summary 1.2 Warning Tags and Labels Technical Information…………………………………………………………………………….…………. 8 2.1 Specifications 2.2 Dimensions 2.3 Optional Equipment Preoperational Procedures ………………………………………………………………………………..12 3.1 Chain 3.2 Attachment Points 3.3 Mounting the Hoist 3.
Section 5.7 6.0 Page Number Inspection Methods and Criteria 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.
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.
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.
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.
1.2 Warning Tags and Labels 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.
2.0 Technical Information 2.1 Specifications 2.1.1 Product Code 2.1.2 Operating Conditions and Environment Temperature range: Humidity: -4° to +140°F (-20° to +60°C) 100% or less (Not an Underwater Device) .
Table 2-1 NTH Trolley Hoist Specifications Product Code Push Geared Min. Load Weight Pull Wt. for Std. Radius *Flange Chain Dia. Shipping Shipping for Cap. Headroom to Lift Overhaul Net Addn’l Net Lift for Range B (mm) x Push Geared Weight Weight Addn’l C (in) Load Ratio (Tons) Wt. One ft Wt. (ft) Curve (in) Chain Fall Trolley Trolley Approx. Approx. One ft (lbs) (lbs) of Lift (lbs) (in) Lines (lbs) (lbs) of Lift (lbs) (lbs) 1 NTH010 G-NTH010 12.5 10 72 31 39 2.28-4.92 6.3x1 62 65 1.2 73 78 1.
Table 2-3 Bottom Hook Dimension* Figure 2-3 Cap. (Tons) 1 2 3 Product Code NTH010 NTH020 NTH030 a (in) 1.0 1.4 1.8 b (in) 0.6 0.9 1.1 c (in) 0.9 1.2 1.5 d (in) 0.6 0.9 1.1 e (in) 1.7 2.0 2.2 g (in) 1.1 1.4 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. 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, springloaded, locking latch.
Figure 2-5 Inspection Hooks 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.
3.0 Preoperational Procedures 3.1 Trolley Adjustment 3.1.1 Before use, the manual trolley can be adjusted in increments of 1/8” by simply 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.
Table 3-1 Number of Adjusting Spacers I-Beam Width (in) Cap.
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.
3.3 Attachment Points & Mounting Location 3.3.1 3.3.2 3.4 Prior to attaching the hoist ensure that all attachment points, suspension 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.
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.
4.0 Operation 4.1 Introduction 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.
4.2 Shall’s and Shall Not’s for Operation 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: • NOT lift more than rated load for the hoist. • • NOT use damaged hoist or hoist that is not working properly. NOT leave load supported by the hoist unattended unless specific precautions have been taken.
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 the hoist manufacturer’s recommended parts when repairing the unit. • Use hook latches.
5.0 Inspection 5.1 General 5.1.1 5.2 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.
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.
5.5 Occasionally Used Hoists 5.5.1 5.6 5.7 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. Inspection Records 5.6.
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.
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.
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.
Table 5-5 Chain Pin Hole and Top Pin Hole Wear Dimensions Hole Diameter (d) Chain Pin Hole inch (mm) Standard Discard 0.319 (8.1) 0.339 (8.6) 0.350 (8.9) 0.370 (9.4) Product Code NTH010, NTH020 NTH030, NTH050 Top Pin Hole inch (mm) Standard Discard 0.480 (12.2) 0.500 (12.7) 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.
Figure 5-2 Brake Assembly Table 5-9 Friction Plate Wear Dimensions Thickness inch (mm) Product Code All Standard Discard 0.118 (3.0) 0.098 (2.5) Table 5-10 Brake Bushing Wear Dimensions A Dimension Product Code CF010, CF020, CF030, CF050 inch (mm) Standard Discard 0.157 (4.0) 0.118 (3.
Table 5-11 Brake Ratchet Disc Wear Dimensions D Dimension Product Code CF010, CF020, CF030, CF050 inch (mm) Standard Discard 3.858 (98) 3.
Table 5-12 Track Wheel Wear Dimensions Note: Track wheels are for flat and tapered flanges. 1 “D” Dimension inch (mm) Standard Discard 2.80 (71) 2.74 (69.5) “t” Dimension inch (mm) Standard Discard 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.
6.0 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.
6.1.4 6.2 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.
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].
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]. : Always bend the split pin securely.
Figure 6-4 Load Chain Assembly 8) Put chain guide [20] (or guide rollers for ½ ton [20-A]) on the frame [13]. : Fit the larger boss of chain guide [20] into holes on 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.
Figure 6-6 Body “A” 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]. : Make sure the pawl spring is fixed to the pawl and the snap ring is securely set at the groove of the pawl pin. 17) Thread friction disc [29] on the pinion [14].
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.
6.5 Storage 6.5.1 : IMPROPER chain hoist use could result in death or serious injury. To avoid these hazards: 6.6 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). Outdoor Installation 6.6.
7.0 Troubleshooting 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 Symptom Cause Remedy Reassemble properly and ensure proper lifting before reuse. During operation, hoist idles or load drifts Poor load sheave and load chain contact caused by improper chain-reeving. Reset the capsized hook. Hoist will not lift all the way (multiple fall hoists) Capsized hook Twisted Chain Capsized Hook and Chain Double Fall Models Hoist does not lift load smoothly. Improper assembly of gear OR bearing broken.
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 Over tightened brake The hoist left under load for a long period Load will not go down Pull down hard (possibly with 2 people) on the hand chain to loosen brake. Shock loaded during operation Brake rusted tight Replace the rusty components and perform hoist maintenance.
8.0 Warranty All products sold by Harrington Hoists, Inc.
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9.0 Parts List 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. Figure 9-1 NTH4 Nameplate The parts list is arranged into the following sections: Section Page 9.1 1 to 5 Ton Parts………………….…………………………………………………...……….……….... 44 9.
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9.1 1 to 5 Ton Parts Fig. No. 1 3 4 6 7 8 9 10 11 Name Parts / Hoist 1 1 1 1 1 1 1 1 1 1 1 1 13 Suspender Top Pin Bottom Hook Complete Set Latch Assembly Chain Pin Slotted Nut Split Pin Body A Body B without rivets Name Plate - Blank with rivets Frame 14 Pinion 1 Ball Bearing A Ball Bearing B Ball Bearing C Ball Bearing D Load Sheave Load Gear Chain Guide Stripper Socket Bolt for Body Socket Bolt for Body U-Nut for Body Pawl Pin U-Nut for Fig. 24 Pawl Spring Pawl Snap Ring for Fig.
9.2 Additional 2 through 5 Ton Parts Figure 9-3 Additional 2 through 5 Ton Parts Fig. No. 44 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 68 69 70 71 72 73 74 75 76 Name Suspender Chain Pin Slotted Nut for Fig. 46 Split Pin for Fig. 46 Bottom Hook Complete Set Bottom Yoke Bolt U-Nut Shaft Spring Pin Idle Sheave Bottom Hook Assembly Latch Assembly Suspender Assembly Suspender Idle Sheave Bracket L.H. Idle Sheave Shaft Spring Pin Bolt Lock Nut Idle Sheave Bracket R.H.
9.3 Trolley Parts Figure 9-3 Trolley Parts Push Trolley Parts Fig. No.
9.3 Trolley Parts Suspension Shaft Sizing Chart Fig. No. 93 Parts / Hoist 2 1Ton Flange Range (inches) 2.32 to 5.16 5.17 to 7.16 7.17 to 9.16 9.17 to 11.16 11.17 to 13.16 13.17 to 15.16 Part # 5060501 5060502 5060503 5060504 5060505 5060506 2 Ton Flange Range (inches) 3.72 to 5.97 5.98 to 7.97 7.98 to 9.97 9.98 to 11.97 11.98 to 13.97 13.98 to 15.97 Part # 5062401 5062402 5062403 5062404 5062405 5062406 48 3 Ton Flange Range (inches) 3.62 to 6.26 6.27 to 8.26 8.27 to 10.26 10.27 to 12.26 12.
9.4 Optional Hooks Figure 9-4 Bullard®, Shur-Loc® and Inspection Hooks ® Bullard Hooks Parts Per Hoist 1 Ton Bullard® Bottom Hook Complete Set 1 6027802 8 Bullard® Hook Assembly 1 60162 9 Bottom Yoke Kit 1 BYKITCB010 10 Button Head Screw 4 9012601 11 Flexloc® Nut 4 9012603 Fig. No. 7 ` Name 2 Ton 3 Ton 5 Ton 6027805 6027807 6027808 60165 60168 60169 12 Warning Tag* 1 WTAG6* *Hoist with Bullard® Hook(s) must have WTAG6 and WTAG9 installed. (See page 6 for WTAG9).
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www.harringtonhoists.com Harrington Hoists, Inc. 401 West End Avenue Manheim, PA 17545-1703 Phone: 717-665-2000 Toll Free: 800-233-3010 Fax: 717-665-2861 Harrington Hoists – Western Division 2341 Pomona Rd.
