Vestil LM-Series User manual

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2017 Vestil Manufacturing Corp.
LM-Series and LMS-Series Fork Truck Attachments
Use and Maintenance Manual
Receiving instructions:
After delivery, remove the packaging from the product. Inspect the product closely to determine whether it
sustained damage during transport. If damage is discovered during the inspection, immediately record a
complete description of the damage on the bill of lading. If the product is undamaged, discard the packaging.
NOTE:
The end-user is solely responsible for confirming that product design, installation, use, and maintenance
comply with laws, regulations, codes, and mandatory standards applied where the product is used.
Table of Contents Table of Figures
Signal words……………………. 2 Fig. 1: LM-1T & -1NT Exploded Parts Diagrams, Parts Lists, Center of Gravity………… 3 - 6
Safe use recommendations…… 2 Fig. 2: LM-OBT & -OBNT Exploded Parts Diagrams, Parts Lists, Center of Gravity........ 7 - 10
Safety Recommendations……… 3 Fig. 3: LM-HRT & -HRNT Exploded Parts Diagram, Parts Lists, Center of Gravity…….. 11 - 14
Loading & Use Instructions……. 23 - 25 Fig. 4: LM-EBT & -EBNT Exploded Parts Diagram, Parts Lists, Center of Gravity……... 15 - 18
Inspections & Maintenance……. 25 - 26 Fig. 5: LMS-EBT-46 & -EBNT-46 Exploded Parts Diagram, Parts Lists, Centers……….
Labeling diagram…………..…… 27 of Gravity………………………………………………………………………………… 19 - 22
Limited Warranty……………….. 28
LM-HRT &
LM-HRNT
LM-EBT &
LM-EBNT
LM-1T &
LM-1NT
LM-OBT &
LM-OBNT
VESTIL MANUFACTURING CORP.
2999 North Wayne Street, P.O. Box 507, Angola, IN 46703
Telephone: [phone] -or- Toll Free [phone]
Fax: [phone]
www.vestilmfg.com e-mail: [email protected]
LMS-EBT &
LMS-EBNT

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2016 Vestil Manufacturing Co. Page 2 of 28
SIGNAL WORDS
This manual classifies personal injury risks and situations that might cause property damage with “Signal
words”. Signal words indicate the seriousness of injuries that might result if a particular act or omission occurs.
Identifies a hazardous situation which, if not avoided, WILL result in DEATH or
SERIOUS INJURY. Use of this signal word is limited to the most extreme situations.
Identifies a hazardous situation which, if not avoided, COULD result in DEATH or
SERIOUS INJURY.
Indicates a hazardous situation which, if not avoided, COULD result in MINOR or
MODERATE injury.
Identifies practices likely to result in product/property damage, such as operation that might
damage the boom.
Safe Use Recommendations:
Vestil diligently strives to identify foreseeable hazards associated with the use of its products. However, material
handling is dangerous and no manual can address every possible risk. The end-user ultimately is responsible for
exercising sound judgment at all times.
Material handling is dangerous. Improper or careless operation might result in serious personal
injuries. Acquire a copy of the latest version of ANSI B56.1, which is freely downloadable on www.ITSDF.org. Apply
all relevant portions of Part II “For the User”. The following recommendations are intended to complement the
guidance provided in B56.1.
Always use this boom in compliance with all rules applied to fork truck attachment at your worksite.
Failure to read and understand the instructions included in this manual before using or servicing the boom
constitutes misuse.
DO NOT use a damaged boom. Inspect the boom before each use according to the relevant inspection instructions
that appear on p. 25-26 to determine whether the boom is in normal operating condition.
DO NOT contact electrified wires with the boom.
DO NOT use the boom if the safety chain is damaged or missing. The only purpose of the safety chain is to prevent
the boom from sliding off of the forks—it is NOT intended or designed to bear the full load rating.
DO NOT lift the boom until it is securely connected to the carriage of the fork truck with the restraint strap.
DO NOT attempt to lift a load weighing more than the boom’s maximum rated load. Load ratings for all boom
variants appear on pages 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22.
NEVER lift this boom over people.
DO NOT permit any person to stand beneath or travel under the boom or the load.
Inform everyone in the area that you are going to use the boom. Instruct them to stay clear of the boom and the
supported load during use.
DO NOT allow people to ride on either the boom or the load.
DO NOT use the boom if any product label (see p. 27) is unreadable, damaged, or missing. Contact Vestil to order
a replacement label(s).
ALWAYS apply proper (fork) lift operation practices learned during your training program.
Always make sure that shackle pins (see shackles in exploded parts diagrams, pp. 3-22) are secure before applying
a load to the load hook. Tighten the screw pin before each use.
Before raising the boom from the floor AND before attaching the load to the boom, tilt the fork lift mast away from
the boom to ensure that the boom will not slide towards the tips of the forks.
ALWAYS follow the loading and use instructions that appear on p. 23-25. Failure to properly position a load might
cause a dangerous degree of load swing when the boom is elevated.
Only use the boom to lift loads. DO NOT use the boom to drag items.
Transport loads with the bottom of the load and the forks as low as possible.
Drive suspended loads at low speed. Brake and turn slowly cautiously.
DO NOT modify the boom in any way. Modifications automatically void the limited warranty (see p. 28) and might
make the boom unsafe to use.

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2016 Vestil Manufacturing Co. Page 3of 28
FIG. 1A: LM-1T-4k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-176
08-514-111
08-514-177
08-514-178
Weldment, frame, boom/base, 4k:
LM-1T-4-11
LM-1T-4-24
LM-1T-4-30
LM-1T-4-36
1
1
1
1
2 08-514-261 Weldment, inner tube 1
3 08-014-134 Frame, front support leg casting 1
4 08-025-004 X-handle, locking bolt 1
5 08-145-001 Swivel hook, 2-ton 1
6 08-145-041
5
/
16
” snap hook 1
7 08-145-010
1
/
2
” shackle, 2-ton 1
8 99-145-037
5
/
16
” chain 36” long 1
9 99-145-084 Lap link 1
10 99-645-019 2-ton hook and shackle 1
11 11211
1
/2” -13UNC x 2” HHCS zinc-plated
bolt 1
12 36109
1
/
2
” – 13UNC hex nut 1
FIG. 1B: LM-1T-6k Exploded Parts Diagram & Bill of Materials
FIG. 1C: LM-1T-8k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-179
08-514-113
08-514-180
08-514-181
Weldment, frame, boom/base, 6k:
LM-1T-6-11
LM-1T-6-24
LM-1T-6-30
LM-1T-6-36
1
1
1
1
2 08-514-261 Weldment, inner tube 1
3 08-014-134 Frame, front support leg casting 1
4 08-025-004 X-handle, locking bolt 1
5 08-145-001 Swivel hook, 2-ton 1
6 08-145-002 Swivel hook, 3-ton 1
7 08-145-041
5
/
16
” snap hook 1
8 08-145-010
1
/
2
” shackle, 2-ton 1
9 99-145-019
5
/
8
” 3.25-ton shackle 1
10 99-145-037
5
/
16
” chain 36” long 1
11 99-145-084 Lap link 1
12 11211
1
/2” -13UNC x 2” HHCS zinc-plated
bolt 1
13 36109
1
/
2
” – 13UNC hex nut 1
Item
No. Part No. Description Quantity
1
08-514-115
08-514-315
08-514-316
Weldment, frame, boom/base, 8k:
LM-1T-8-24
LM-1T-8-30
LM-1T-8-36
1
1
1
2 08-514-272 Weldment, inner tube 1
3 08-014-134 Frame, front support leg casting 1
4 08-025-004 X-handle, locking bolt 1
5 08-145-002 Swivel hook, 3-ton 1
6 08-145-005 Swivel hook, 5-ton 1
7 08-145-006
7
/
8
” 6.5-ton shackle 1
8 08-145-041
5
/
16
” snap hook 1
9 99-145-019
5
/
8
” 3.25-ton shackle 1
10 99-145-037
5
/
16
” chain 36” long 1
11 99-145-084 Lap link 1
12 11211
1
/2” -13UNC x 2” HHCS zinc-
plated bolt 1
13 36110
1
/
2
” – 13UNC zinc-plated hex nut 1

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FIG. 1D: LM-1T- 4k, 6k & 8k Centers of Gravity and Maximum Load Ratings for
Varying Load Attachment Point and Boom Extension Combinations
The center of gravity of the boom changes as boom length changes. As shown in the diagram below, the
horizontal center of gravity may be located at any point from RHCG to EHCG:
Retracted horizontal center of gravity (RHCG): boom fully retracted, and load attached at position A. RHCG is
measured from the “origin point” of the above diagram (edges of the fork pockets);
Extended horizontal center of gravity (EHCG): boom fully extended with a load attached at position J. EHCG
is also measured from the “origin point” of the above diagram (edges of the fork pockets);
All other combinations of boom extension and load position produce a horizontal center of gravity located
somewhere between RHCG and EHCG.
Model Extended horizontal
center of gravity
Retracted horizontal
center of gravity
Vertical center of
gravity A B C D E F G
Net
weight
LM-1T-4-11 519/16 in. (131.0 cm) 3311/16 in. (85.6 cm) 133/4” (34.9 cm) 86-1531/2” 13” 19” 11” 257/8” 71/2
”
21/2
”
404.7 lb.
LM-1T-4-24 563/8in. (143.2 cm) 325/16 in. (82.1 cm) 135/16”
(33.8 cm)
86-1531/2” 13” 32” 24” 257/8” 71/2
”
21/2
”
429.3 lb.
LM-1T-4-30 48 in. (121.9 cm) 313/4in. (80.6 cm) 131/16” (33.2 cm) 86-1531/2” 13” 38” 30” 257/8” 71/2
”
21/2
”
447.4 lb.
LM-1T-4-36 461/16 in. (117 cm) 311/16 in. (78.9 cm) 1213/16” (32.5 cm) 86-1531/2” 13” 44” 36” 257/8” 71/2
”
21/2
”
465.4 lb.
LM-1T-6-11 48 in. (121.9 cm) 313/4in. (80.6 cm) 123/4” (32.4 cm) 86-1531/2” 13” 19” 11” 257/8” 71/4
”
21/4
”
452.7 lb.
LM-1T-6-24 465/16 in. (117.6 cm) 305/8in. (77.8 cm) 123/8” (31.4 cm) 86-1531/2” 13” 32” 24” 257/8” 71/4
”
21/4
”
477.4 lb.
LM-1T-6-30 4415/16 in. (112.6 cm) 301/8in. (76.5 cm) 123/16” (31.0 cm) 86-1531/2” 13” 38” 30” 257/8” 71/4
”
21/4
”
497.0 lb.
LM-1T-6-36 4313/16 in. (11.3 cm) 299/16 in. (75.1 cm) 12” (30.5 cm) 86-1531/2” 13” 44” 36” 257/8” 71/4
”
21/4
”
516.5 lb.
LM-1T-8-24 531/4in. (135.3 cm) 347/16 in. (87.5 cm) 135/8” (34.6 cm) 845/8-1491/8” 111/2” 32” 24” 269/16” 71/4
”
21/4
”
665.3 lb.
LM-1T-8-30 531/4in. (135.3 cm) 347/16 in. (87.5 cm) 135/8” (34.6 cm) 845/8-1491/8” 111/2” 38” 30” 269/16” 71/4
”
21/4
”
688.5 lb.
LM-1T-8-36 531/4in. (135.3 cm) 347/16 in. (87.5 cm) 135/8” (34.6 cm) 845/8-1491/8” 111/2” 44” 36” 269/16” 71/4
”
21/4
”
711.7 lb.
Hook position A B C D E F G H I J
Distance from end
of boom in inches
(cm)
36”
(91)cm
48”
(122cm)
60”
(152cm)
72”
(183cm)
84”
(213cm)
96”
(244cm)
108”
(274cm)
120”
(305cm)
132”
(335cm)
144”
(366cm)
Maximum rated load of a load suspended from a single hook located at the corresponding “Hook position”.
LM-1T-4k 4000 lb.
(1820kg)
3750 lb.
(1705kg)
3500 lb.
(1590kg)
3250 lb.
(1477kg)
3000 lb.
(1363kg)
2750 lb.
(1250kg)
2500 lb.
(1136kg)
2250 lb.
(1022kg)
2000 lb.
(909kg)
1750 lb.
(795kg)
LM-1T-6k 6000 lb.
(2727kg)
5000 lb.
(2272kg)
4500 lb.
(2045kg)
4000 lb.
(1820kg)
3500 lb.
(1590kg)
3000 lb.
(1363kg)
2600 lb.
(1181kg)
2300 lb.
(1045kg)
2000 lb.
(909kg)
1800 lb.
(818kg)
LM-1T-8k 8000 lb.
(3636kg)
6650 lb.
(3022kg)
6000 lb.
(2727kg)
5300 lb.
(2409kg)
4650 lb.
(2113kg)
4000 lb.
(1820kg)
3500 lb.
(1590kg)
3000 lb.
(1363kg)
2600 lb.
(1181kg)
2200 lb.
(1000kg)
J I H G F E D C B A
= Center of gravity
FIG. 1E: LM-1T centers of gravity and dimensions

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2016 Vestil Manufacturing Co. Page 5 of 28
FIG. 1F: LM-1NT-4k Exploded Parts Diagram & Bill of Materials
Item
No.
Part No. Description Quantity
1
08-514-319
08-514-128
08-514-320
08-514-321
Weldment, frame, boom/base:
LM-1NT-4-11
LM-1NT-4-24
LM-1NT-4-30
LM-1NT-4-36
1
1
1
1
2 08-014-134 Frame, front support leg casting 1
3 08-145-001 Swivel hook, 2-ton 1
4 08-145-041
5
/16” snap hook
1
5 08-145-010
1
/2” 2-ton shackle
1
6 99-145-037
5
/16” chain 36” long
1
7 99-145-084 Lap link 1
8 99-645-019 2-ton hook and shackle 1
9 11211
1
/2in. – 13 UNC x 2in. HHCS zinc-
plated bolt 1
10 36109
1
/
2
in. – 13 UNC hex nut 1
FIG. 1G: LM-1NT-6k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-322
08-514-129
08-514-323
08-514-324
Weldment, frame, boom/base:
LM-1NT-6-11
LM-1NT-6-24
LM-1NT-6-30
LM-1NT-6-36
1
1
1
1
2 08-014-134
Frame, front support leg
casting 1
3 08-145-001 Swivel hook, 2-ton 1
4 08-145-002 Swivel hook, 3-ton 1
5 08-145-041
5
/16” snap hook
1
6 08-145-010
1
/2” 2-ton shackle
1
7 99-145-019
5
/
8
” 3.25-ton shackle 1
8 99-145-037
5
/16” chain 36” long
1
9 99-145-084 Lap link 1
10 11211
1
/2in. – 13 UNC x 2in. HHCS
zinc-plated bolt 1
11 36109
1
/
2
in. – 13 UNC hex nut 1
FIG. 1H: LM-1NT-8k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-130
08-514-317
08-514-318
Weldment, frame, boom/base:
LM-1NT-8-24
LM-1NT-8-30
LM-1NT-8-36
1
1
1
2 08-014-134
Frame, front support leg
casting 1
3 08-145-002 Swivel hook, 3-ton 1
4 08-145-005 Swivel hook, 5-ton 1
5 08-145-006
7
/
8
” 6.5-ton shackle 1
6 08-145-041
5
/16” snap hook
1
7 99-145-019
5
/
8
” 3.25-ton shackle 1
8 99-145-037
5
/16” chain 36” long
1
9 99-145-084 Lap link 1
10 11211
1
/2in. – 13 UNC x 2in. HHCS
zinc-plated bolt 1
11 36110
1
/2” – 13UNC zinc-plated hex
nut 1

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2016 Vestil Manufacturing Co. Page 6 of 28
Model Horizontal center
of gravity
Vertical center of
gravity A B C D E F Net weight
LM-1NT-4-11 2811/16” (72.9 cm) 1013/16” (27.5 cm) 811/2” 2711/16” 19” 11” 71/2” 21/2” 309.9 lb.
LM-1NT-4-24 2811/16” (72.9 cm) 1013/16” (27.5 cm) 811/2” 2413/16” 32” 24” 71/2” 21/2” 334.6 lb.
LM-1NT-4-30 2811/16” (72.9 cm) 1013/16” (27.5 cm) 811/2” 2413/16” 38” 30” 71/2” 21/2” 352.6 lb.
LM-1NT-4-36 2811/16” (72.9 cm) 1013/16” (27.5 cm) 811/2” 2413/16” 44” 36” 71/2” 21/2” 370.6 lb.
LM-1NT-6-11 27” (68.6cm) 1013/16” (27.5 cm) 811/2” 2413/16” 19” 11” 71/4” 21/4” 357.7 lb.
LM-1NT-6-24 27” (68.6cm) 1013/16” (27.5 cm) 811/2” 2413/16” 32” 24” 71/4” 21/4” 382.4 lb.
LM-1NT-6-30 27” (68.6cm) 1013/16” (27.5 cm) 811/2” 2413/16” 38” 30” 71/4” 21/4” 402.0 lb.
LM-1NT-6-36 27” (68.6cm) 1013/16” (27.5 cm) 811/2” 2413/16” 44” 36” 71/4” 21/4” 421.5 lb.
LM-1NT-8-24 301/8” (29.8 cm) 113/4” (29.8 cm) 801/8” 231/2” 32” 24” 71/4” 21/4” 488.4 lb.
LM-1NT-8-30 301/8” (29.8 cm) 113/4” (29.8 cm) 801/8” 231/2” 38” 30” 71/4” 21/4” 506.9 lb.
LM-1NT-8-36 301/8” (29.8 cm) 113/4” (29.8 cm) 801/8” 231/2” 44” 36” 71/4” 21/4” 525.4 lb.
HCG
VCG
Hook position A B C D E
Distance from end of boom in
inches (cm)
36”
(91cm)
48”
(122cm)
60”
(152cm)
72”
(183cm)
84”
(213cm)
Maximum rated load of a load suspended from a single hook located at the
corresponding “Hook position”.
LM-1NT-4k 4000 lb.
(1820kg)
3750 lb.
(1705kg)
3500 lb.
(1590kg)
3250 lb.
(1477kg)
3000 lb.
(1363kg)
LM-1NT-6k 6000 lb.
(2727kg)
5000 lb.
(2272kg)
4500 lb.
(2045kg)
4000 lb.
(1820kg)
3500 lb.
(1590kg)
LM-1NT-8k 8000 lb.
(3636kg)
6650 lb.
(3022kg)
6000 lb.
(2727kg)
5300 lb.
(2409kg)
4850 lb.
(2205kg)
E D C B A
FIG. 1J: LM-1NT- 4k, 6k & 8k Centers of Gravity and Maximum Load Ratings
for Varying Load Attachment Points
Center of gravity has both a horizontal component and a vertical component. The vertical center of gravity
(VCG) lies along a horizontal line above the bottom edges of the fork pockets. Similarly, the horizontal center of
gravity (HCG) is located along a vertical line as shown in the diagram below.
FIG. 1K: LM-1NT centers of gravity and dimensions

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FIG. 2A: LM-OBT-4k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-119
08-514-298
08-514-299
Weldment, frame, boom + base:
LM-OBT-4k-24
LM-OBT-4k-30
LM-OBT-4k-36
1
1
1
2 08-514-293 Weldment, inner tube 1
3 01-146-006 Spring 1
4 08-014-069-001
Frame, front supporting leg (small)
casting 1
5 08-145-001 Swivel hook, 2-ton 1
6 08-145-041
5
/
16
” snap hook 1
7 08-145-010
1
/
2
” 2-ton shackle 1
8 08-645-008 Boom chain and pin 1
9 13-025-023 1
1
/
8
” i.d. red handle grip 1
10 99-645-019 2-ton hook and shackle 1
11 99-145-084 Lap link 1
12 11210
1
/
2
” – 13UNC x 1
3
/
4
” hex bolt 1
13 36110
1
/
2
” – 13UNC zinc-plated hex nut 1
FIG. 2B: LM-OBT-6k Exploded Parts Diagram & Bill of Materials
FIG. 2C: LM-OBT-8k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-122
08-514-300
08-514-301
Weldment, frame, boom + base:
LM-OBT-6k-24
LM-OBT-6k-30
LM-OBT-6k-36
1
1
1
2 08-514-293 Weldment, inner tube 1
3 01-146-006 Spring 1
4 08-014-069-001
Frame, front supporting leg (small)
casting 1
5 08-145-001 Swivel hook, 2-ton 1
6 08-145-002 Swivel hook, 3-ton 1
7 08-145-041
5
/
16
” snap hook 1
8 08-145-010
1
/
2
” 2-ton shackle 1
9 08-645-008 Boom chain and pin 1
10 13-025-023 1
1
/
8
” i.d. red handle grip 1
11 99-145-019 2-ton hook and shackle 1
12 99-145-084 Lap link 1
13 11210
1
/
2
” – 13UNC x 1
3
/
4
” hex bolt 1
14 36110
1
/
2
” – 13UNC zinc-plated hex nut 1
Item
No. Part No. Description Quantity
1
08-514-125
08-514-311
08-514-312
Weldment, frame, boom + base:
LM-OBT-8k-24
LM-OBT-8k-30
LM-OBT-8k-36
1
1
1
2 08-014-069-001
Frame, front supporting leg (small)
casting 1
3 08-514-310 Weldment, inner tube 1
4 01-146-006 Spring 2
5 08-145-002 Swivel hook, 3-ton 1
6 08-145-005 Swivel hook, 5-ton 1
7 08-145-006
7
/
8
” 6.5-ton shackle 1
8 08-145-041
5
/
16
” snap hook 1
9 08-645-008 Boom chain and pin 1
10 13-025-023 1
1
/
8
” i.d. red handle grip 1
11 99-145-019 2-ton hook and shackle 1
12 99-145-084 Lap link 1
13 11211
1
/
2
” – 13UNC x 2” hex bolt 1
14 36110
1
/
2
” – 13UNC zinc-plated hex nut 1

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2016 Vestil Manufacturing Co. Page 8 of 28
The center of gravity of the boom changes as boom length changes. As shown in the diagram below, the horizontal
center of gravity may be located at any point from RHCG to EHCG:
Retracted horizontal center of gravity (RHCG): boom fully retracted, and load attached at position A. RHCG is
measured from the “origin point” of the above diagram (edges of the fork pockets);
Extended horizontal center of gravity (EHCG): boom fully extended with a load attached at position J. EHCG is
also measured from the “origin point” of the above diagram (edges of the fork pockets);
All other combinations of boom extension and load position produce a horizontal center of gravity located
somewhere between RHCG and EHCG.
FIG. 2D: LM-OBT- 4k, 6k & 8k Centers of Gravity and Maximum Load Ratings for Varying
Load Attachment Point and Boom Extension Combinations
Hook position A B C D E F G H I J
Distance from mast
end of boom
36”
(91cm)
48”
(122cm)
60”
(152cm)
72”
(183cm)
84”
(213cm)
96”
(244cm)
108”
(274cm)
120”
(305cm)
132”
(335cm)
144”
(366cm)
Maximum rated load of a load suspended from a single hook located at the corresponding “Hook position”.
LM-OBT-4k 4000 lb.
(1820kg)
3750 lb.
(1705kg)
3500 lb.
(1590kg)
3250 lb.
(1477kg)
3000 lb.
(1363kg)
2750 lb.
(1250kg)
2500 lb.
(1136kg)
2250 lb.
(1023kg)
2000 lb.
(909kg)
1750 lb.
(795kg)
LM-OBT-6k 6000 lb.
(2727kg)
5000 lb.
(2272kg)
4500 lb.
(2045kg)
4000 lb.
(1820kg)
3500 lb.
(1590kg)
3000 lb.
(1364kg)
2600 lb.
(1182kg)
2300 lb.
(1045kg)
2000 lb.
(909kg)
1800 lb.
(818kg)
LM-OBT-8k 8000 lb.
(3636kg)
6650 lb.
(3022kg)
6000 lb.
(2727kg)
5300 lb.
(2409kg)
4650 lb.
(2113kg)
4000 lb.
(1820kg)
3500 lb.
(1590kg)
3000 lb.
(1363kg)
2600 lb.
(1181kg)
2200 lb.
(1000kg)
J I H G F E D C B A
Model
Extended
horizontal center
of gravity
Retracted
horizontal center
of gravity
Vertical center
of gravity A B C D E F G
Net
weight
LM-OBT-4-24 471/8” (119.7 cm) 3113/16” (80.8 cm) 143/8” (36.5
cm)
865/8”-1465/8” 2711/16
”
32” 24” 6” 71/2” 21/2” 433.9 lb.
LM-OBT-4-30 471/8” (119.7 cm) 3113/16” (80.8 cm) 143/8” (36.5
cm)
865/8”-1465/8” 2711/16
”
38” 30” 6” 71/2” 21/2” 451.5 lb.
LM-OBT-4-36 471/8” (119.7 cm) 3113/16” (80.8 cm) 143/8” (36.5
cm)
865/8”-1465/8” 2711/16
”
44” 36” 6” 71/2” 21/2” 469.1 lb.
LM-OBT-6-24 443/16” (119.7 cm) 31” (78.7 cm) 143/8” (36.5
cm)
865/8”-1465/8” 2711/16
”
32” 24” 6” 71/4” 21/4” 481.9 lb.
LM-OBT-6-30 443/16” (119.7 cm) 31” (78.7 cm) 143/8” (36.5
cm)
865/8”-1465/8” 2711/16
”
38” 30” 6” 71/4” 21/4” 501.1 lb.
LM-OBT-6-36 443/16” (119.7 cm) 31” (78.7 cm) 143/8” (36.5
cm)
865/8”-1465/8” 2711/16
”
44” 36” 6” 71/4” 21/4” 520.3 lb.
LM-OBT-8-24 5111/16” (131.3 cm) 35” (88.9 cm) 151/4” (38.7
cm)
851/4”-1451/4” 287/8” 32” 24” 51/8
”
71/4” 21/4” 665.0 lb.
LM-OBT-8-30 5111/16” (131.3 cm) 35” (88.9 cm) 151/4” (38.7
cm)
851/4”-1451/4” 287/8” 38” 30” 51/8
”
71/4” 21/4” 684.1 lb.
LM-OBT-8-36 5111/16” (131.3 cm) 35” (88.9 cm) 151/4” (38.7
cm)
851/4”-1451/4” 287/8” 44” 36” 51/8
”
71/4” 21/4” 703.3 lb.
FIG. 2E: LM-OBT centers of gravity and dimensions

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2016 Vestil Manufacturing Co. Page 9 of 28
FIG. 2F: LM-OBNT-4k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-132
08-514-302
08-514-303
Weldment, frame, boom + base
LM-OBNT-4-24
LM-OBNT-4-30
LM-OBNT-4-36
1
1
1
2 01-146-006 Spring 1
3 08-014-069-001 Frame, front support leg (small) casting 1
4 08-145-001 Swivel hook, 2-ton 1
5 08-145-041
5
/
16
” snap hook 1
6 08-145-010
1
/
2
” 2-ton shackle 1
7 08-645-008 Assembly, boom chain and pin 1
8 13-025-023
1
1
/
8
” inner diameter red handle grip 1
9 99-145-084 Lap link 1
10 99-645-019 2-ton hook and shackle 1
11 11210
1
/
2
” – 13UNC x 1
3
/
4
” hex bolt 1
12 36110
1
/
2
” – 13 zinc-plated hex nut 1
FIG. 2G: LM-OBNT-6k Exploded Parts Diagram & Bill of Materials
FIG. 2H: LM-OBNT-8k Exploded Parts Diagram & Bill of Materials
Item
No. Part No. Description Quantity
1
08-514-134
08-514-304
08-514-305
Weldment, frame, boom + base
LM-OBNT-6-24
LM-OBNT-6-30
LM-OBNT-6-36
1
1
1
2 01-146-006 Spring 1
3 08-014-069-001 Frame, front support leg (small) casting 1
4 08-145-001 Swivel hook, 2-ton 1
5 08-145-002 Swivel hook, 3-ton 1
6 08-145-041
5
/
16
” snap hook 1
7 08-145-010
1
/
2
” 2-ton shackle 1
8 08-645-008 Assembly, boom chain and pin 1
9 13-025-023
1
1
/
8
” inner diameter red handle grip 1
10 99-145-019
5
/
8
” 3
1
/
4
-ton shackle 1
11 99-145-084 Lap link 1
12 11210
1
/
2
” – 13UNC x 1
3
/
4
” hex bolt 1
13 36110
1
/
2
” – 13 zinc-plated hex nut 1
Item
No. Part No. Description Quantity
1
08-514-136
08-514-308
08-514-309
Weldment, frame, boom + base
LM-OBNT-8-24
LM-OBNT-8-30
LM-OBNT-8-36
1
1
1
2 01-146-006 Spring 2
3 08-014-069-001 Frame, front support leg (small) casting 1
4 08-145-006
7
/
8
” 6
1
/
2
-ton shackle 1
5 08-145-002 Swivel hook, 3-ton 1
6 08-145-041
5
/
16
” snap hook 1
7 08-145-005
Swivel hook, 5-ton 1
8 08-645-008 Assembly, boom chain and pin 1
9 13-025-023
1
1
/
8
” inner diameter red handle grip 1
10 99-145-019
5
/
8
” 3
1
/
4
-ton shackle 1
11 99-145-084 Lap link 1
12 11211
1
/
2
” – 13UNC x 2” hex bolt 1
13 36110
1
/
2
” – 13 zinc-plated hex nut 1

01/11 rev. 3/6/2017 LM, MANUAL
Copyright 2016 Vestil Manufacturing Co. Page 10 of 28
Model Horizontal
center of gravity
Vertical center
of gravity A B C D E F G Net weight
LM-1NT-4-24 263/4” (67.9 cm) 115/8” (29.5 cm) 807/8” 265/8” 32” 24” 51/2” 71/2” 21/2” 339.2 lb.
LM-1NT-4-30 263/4” (67.9 cm) 115/8” (29.5 cm) 807/8” 265/8” 38” 30” 51/2” 71/2” 21/2” 356.9 lb.
LM-1NT-4-36 263/4” (67.9 cm) 115/8” (29.5 cm) 807/8” 265/8” 44” 36” 51/2” 71/2” 21/2” 374.4 lb.
LM-1NT-6-24 263/4” (67.9 cm) 115/8” (29.5 cm) 807/8” 265/8” 32” 24” 51/2” 71/4” 21/4” 387.0 lb.
LM-1NT-6-30 263/4” (67.9 cm) 115/8” (29.5 cm) 807/8” 265/8” 38” 30” 51/2” 71/4” 21/4” 406.2 lb.
LM-1NT-6-36 263/4” (67.9 cm) 115/8” (29.5 cm) 807/8” 265/8” 44” 36” 51/2” 71/4” 21/4” 425.4 lb.
LM-1NT-8-24 301/4” (76.8 cm) 133/16” (33.5 cm) 791/2” 251/8” 32” 24” 411/16” 71/4” 21/4” 490.9 lb.
LM-1NT-8-30 301/4” (76.8 cm) 133/16” (33.5 cm) 791/2” 251/8” 38” 30” 411/16” 71/4” 21/4” 510.0 lb.
LM-1NT-8-36 301/4” (76.8 cm) 133/16” (33.5 cm) 791/2” 251/8” 44” 36” 411/16” 71/4” 21/4” 521.2 lb.
FIG. 2J: LM-OBNT- 4k, 6k & 8k Centers of Gravity and Maximum Load
Ratings for Varying Load Attachment Points
E D C B A
FIG. 2K: LM-OBNT centers of gravity and dimensions
Hook position A B C D E
Distance from end of boom in
inches (cm)
36”
(91cm)
48”
(122cm)
60”
(152cm)
72”
(183cm)
78”
(198cm)
Maximum rated load of a load suspended from a single hook located at the
corresponding “Hook position”.
LM-OBNT-4k 4000 lb.
(1820kg)
3750 lb.
(1705kg)
3500 lb.
(1590kg)
3250 lb.
(1477kg)
3000 lb.
(1363kg)
LM-OBNT-6k 6000 lb.
(2727kg)
5000 lb.
(2272kg)
4500 lb.
(2045kg)
4000 lb.
(1820kg)
3500 lb.
(1590cm)
LM-OBNT-8k 8000 lb.
(3636kg)
6650 lb.
(3022kg)
6000 lb.
(2727kg)
5300 lb.
(2409kg)
4850 lb.
(2205kg)
Center of gravity has both a horizontal component and a vertical component. The vertical center of gravity
(VCG) lies along a horizontal line above the bottom edges of the fork pockets. Similarly, the horizontal center of
gravity (HCG) is located along a vertical line as shown in the diagram below.