CUSTOM TRUCK LOAD KING SR-4020 User manual

REV A
OCTOBER 7, 2020
OWNER’S MANUAL
LOAD KING
SR‐4020

Table of Contents
REVISION HISTORY.............................................................................................................. 4
INTRODUCTION .................................................................................................................. 5
DEFINITIONS USED IN THIS MANUAL .................................................................................. 6
HOIST CAPACITY.................................................................................................................. 7
OPERATORS MANUAL ......................................................................................................... 8
1. PRE‐USE INSPECTION .................................................................................................. 8
2. PROPER OPERATION SEQUENCE.................................................................................. 8
2.1) TO DUMP ............................................................................................................ 8
2.2) USING HOIST’S BODY PROP ................................................................................. 9
4. POST OPERATION INSPECTION ................................................................................. 10
SAFETY INFORMATION...................................................................................................... 10
PARTS BREAKDOWN ......................................................................................................... 12
INSTALLATION ................................................................................................................... 14
LUBRICATION AND MAINTENANCE ................................................................................... 20
LOAD KING SCISSOR HOIST LABELS ................................................................................... 21
LOAD KING SCISSOR HOIST LABEL LOCATIONS................................................................... 21
LOAD KING WARRANTY .................................................................................................... 23
LIMITATION OF LIABILITY .................................................................................................. 23
LOAD KING WARRANTY DATA RECORD.............................................................................. 24

REVISION A
4
NAME DATE DESCRIPTION OF CHANGE REV.
J Haas 10/7/2020 INITIAL RELEASE A
REVISION HISTORY

INTRODUCTION
5
Company
Load King has been producing quality trailers since 1956. We are located in Elk Point, South Dakota.
Although the trailer industry is an ever‐changing environment and we’ve seen many changes over the years,
we have remained commied to the simple philosophy that we will make a reasonable profit through the
designing, manufacturing, and markeng of top quality products that we can always be proud to call Load
King. We have not, and will not, compromise in this area.
Quality shows in all facets of an operaon, from the moment you make your first phone call for a product
inquiry to the me you sell your used equipment and realize you’ve received top dollar on your sale. We
connue to strive for excellence in every area and never quit trying to improve. We have earned our
reputaon believing that quality is value and value sells products.
Through our shared Engineering, Markeng and Sales teams, Load King and Custom Truck One Source bring
that tradion of quality and value to another market with the Load King Scissor Hoist.
About Custom Truck One Source
Beginning in February of 2015, three family‐owned and operated companies (Custom Truck & Equipment,
Ulity Fleet Sales and Forestry Equipment of VA) joined together to form what is now Custom Truck One
Source. Shortly aer its incepon, UCO Equipment became a part of the CTOS family along with TNT
Equipment six months later. In December 2015, CTOS welcomed its sixth company under its brand, Load King,
a leading manufacturer of high‐quality and customizable trailers.
The announcement of the partnership represented the plaorm’s collecve commitment to the connued
growth and dominance of each legacy company’s individual offerings, now compounded to leverage the
experse of the team and, ulmately, beer serve loyal CTOS customers all over the world. CTOS will build
upon the market posions of each legacy company, while serving as a single source supplier of specialty
equipment and services for the ulity and heavy equipment industries. The ulity and heavy equipment
plaorm collecvely offers sales, rentals, parts and aer market services, remanufacturing, customized
equipment and transportaon.

REVISION A
6
DEFINITIONS USED IN THIS MANUAL
The following table describes text and symbols used to highlight important informaon.
Table—1

Signal Word Symbol Explanation
DANGER
Danger is used to alert readers about an immediate and serious hazard that will likely be
fatal.
WARNING
Warning is used to alert readers about the potenal for serious injury or death or serious
damage to equipment.
CAUTION
Cauon is used to alert readers about the potenal for anything from moderate injury to
serious equipment damage or destrucon.
READ Read is used to alert readers of informaon to be read on machinery
NOTE Note is used for a p or suggeson to help readers carry out a procedure successfully.

REVISION A
7
HOIST CAPACITY .
NOTE: This chart is a reference to determine the capacity of your hoist based on overhang.
Mounng Heigh/Min Longsill Height = 9.6” / 5”
Mounng Distance = 71.5”
BDOY LENGTH
()
CA
(in)
REAR OVERHANG
(in)
CAPACITY AT 50°
(Tons)
9 60 6 12.8
10 84 6 11.5
11 84 6 10.3
11 84 18 12.8
12 84 18 11.5
12 108 6 9.4
14 108 18 9.4

REVISION A
8
OPERATORS MANUAL .
When using a Load King Scissor Hoist, it is important to have a good understanding of the proper pre‐
Inspecon, post‐inspecons, and operang guidelines. By following these steps, you can safely
operate the Load King Scissor Hoist with minimal risks of damage to the machine or the surrounding
property.
1. PRE‐USE INSPECTION:
1. Before using a Load King Scissor Hoist, do a 360 degree walk around to visually inspect that the
dump bed will be free of obstrucons once in operaon.
2. Be sure to check the oil sight gauge on the reservoir to ensure the tank is full and that no oil has
leaked out.
3. Visually inspect all crical fasteners to ensure there are no loose or damaged bolts, nuts, or other
hardware. Ensure that all lubricaon points have been well maintained and lubricated.
4. If any damage to body or hardware is observed, do not operate unl a thorough inspecon has
been conducted and all necessary repairs have been made.
2. PROPER OPERATION SEQUENCE:
DANGER: Choose an operang locaon where the bed can be fully raised without approaching
power lines or overhead structures, such as tree limbs or light poles.
2.1) To Dump:
1. Posion the chassis on level ground, away from potenal hazards such as power lines and traffic.
2. Turn on the chassis engine, set the parking brake, and engage the PTO switch located on the
center dash panel.
5. DANGER: Before operang the Scissor Hoist, ensure all bystanders are kept well away from the
area of operaon. Do not allow anyone to stand behind loaded Scissor Hoist. Do not operate in
high traffic areas. Operator must stay at controls through enre process, away from all moving
parts, and shielded from road traffic or other potenal hazards.
6. Raise the hoist to the upright posion and dump cargo.

REVISION A
9
OPERATORS MANUAL (Cont.) .
7. DANGER: NEVER place arms, hands, or other body parts under the hoist while running. NEVER
allow anyone under the hoist while in the raised posion without the hoist securely resng on the
body prop. Before lowering the hoist, ALWAYS ensure no people, animals, tools, or other debris
are under the body.
8. Lower the hoist to resng posion.
9. Disengage PTO.
2.2) Using Hoist’s Body Prop:
1. With the body unloaded, raise the hoist and shut offthe power.
2. DANGER: The body prop should never be used when the body is loaded. The body prop should
only be used when the body is completely unloaded.
3. WARNING: When reaching for prop while body is raised, keep yourself as far from underneath
the body as possible.
4. Rotate the body prop to the vercal posion, and push down unl it locks in the upright posion,
asshownbelow.
5. Lower the hoist unl it is safely resng on the body prop.

REVISION A
10
OPERATORS MANUAL (Cont.) .
3. POST OPERATION INSPECTION:
1. Complete a 360 degree walk around to ensure there has been no hydraulic leaks during operaon.
2. Visually inspect all crical components and fasteners to ensure they were not damaged or
loosened during operaons.
SAFETY INFORMATION .
For the operator’s protecon, there are warning labels and safety devices on the Load King Scissor
Hoist that are NOT to be tampered with or removed. It is important for the operator to read all
warning labels before operang the Load King Scissor Hoist. It is the owner’s responsibility to ensure
that the operator and workers on and around the Scissor Hoist understand all of the safety warnings
herein and affixed to the machine. Do not operate Scissor Hoist if safety labels are missing or
damaged
1. WARNING: Do not modify the hydraulic system in any way. Altering the hydraulic system
increases the risk of operator injury and structural harm. Removing, altering or bypassing any
hydraulic component directly violates and voids the warranty.
2. WARNING: The warning and safety labels must be legible. These labels must not be removed or
altered in anyway. These labels are important direcons to ensure that neither workers, nor the
Scissor Hoist get damaged during working operaons or traveling. The pictures in the following
secon show the decals and their locaons. Operang the unit with illegible or missing safety
labels is a direct violaon of the intended use of the unit and voids the warranty.
3. DANGER: NEVER place arm, hands, or other body parts under the body while running. Never go
under a raised body for any reason without the body resng securely on the body prop. Body prop
should be checked regularly, and should not be used if damaged. Body prop should be used with
empty body only.
4. DANGER: Keep all body parts away from moving parts. Do not aempt to manually stop or
restrain any moving parts.
5. DANGER: This Scissor Hoist is a piece of heavy machinery and should be treated as such. Do not
operate while fagued, under the influence of any medicaon which may impair your ability to
operate the machinery safely, or while otherwise impaired.
6. DANGER: Always be aware of your surroundings when operang Scissor Hoist. Do not operate in
crowded areas, areas of high traffic, or areas with overhead obstacles, especially power lines. Do
not allow anyone to stand behind the Scissor Hoist during operaon.

REVISION A
11
SAFETY INFORMATION (Cont.) .
7. DANGER: Do not move truck with bed in the upright posion, or without the tailgate latched.
Doing so could lead to collisions with overhead obstacles or dangerous shiing of loaded
materials.
8. WARNING: Do not overload. Be mindful of Gross Vehicle Weight Rang of your truck, as well as
local laws regarding vehicle weight in your area. Distribute loads evenly in bed to prevent
unexpected weight shis, and be mindful of the effects of increased payload weight on the driving
characteriscs of your vehicle.
9. CAUTION: Do not drive truck with PTO engaged. This may result in serious damage to chassis
and hydraulic systems.
11. Load King is not responsible for any loss or damage resulng from operators neglect of the safety
informaon provided.

REVISION A
12
PARTS BREAKDOWN .

REVISION A
13
ITEM NO. PART NUMBER DESCRIPTION QTY
1 1030908 WELDMENT, FRAME SCISSOR HOIST SR-4020 1
2 1030931 WELDMENT, SCISSORS HOIST SR-4020 1
3 1030932-1 LOWER PIVOT ARM SHAFT 1
4 1031007 WELDMENT, PROP ROD SR-4020 1
5 1031006 WELDMENT, BODY LIFTING FOOT 2
6 UOS-001306 TUBE SPACER COLLAR 2
7 98306A393 STEEL CLEVIS PIN—1/2” x 2-3/4” 1
8 1034079-13 PIN, COTTER 1
9 UOS-001309 SIDE BODY GUIDE PLATE 2
10 UOS001317 FRONT SUBFRAME RAIL SHIM 2
11 UOS-001315 SUBFRAME MIDSHEAR—D.S. 1
12 UOS-001314 SUBFRAME MIDSHEAR—P.S. 1
13 1034529 WELDMENT, FRAME EXTENSION FRONT S.S. 1
14 1034528 WELDMENT, FRAME EXTENSION FRONT C.S. 1
15 1034681 PIN, CYLINDER MOUNT ROD END 1
16 1034932 SHCS, 1/4-20 UNC X 2-1/4" LG ZP 1
17 1000558 LOCKNUT, TOP 1/4-20 UNC ZP 1
18 1034611 CYLINDER, HOIST DOUBLE ACTING ROD 1
19 1034569 ASSY, HYD TANK & MANIFOLD 1
20 1001822 HHCS, 1/2-13 UNC X 2-1/4" LG GR 8 ZP 4
21 1001789 FLATWASHER, HARDENED 1/2" A325 4
22 1000184 LOCKNUT, TOP 1/2-13 UNC ZP 4
23 1034856-1* GREASE ZERK 5
PARTS BREAKDOWN (CONT.) .
NOTE:
*1034856‐1 is not visible in breakdown

REVISION A
14
INSTALLATION .
1. Install lower pivot arm sha(1) into the lower tube of the scissor hoist (2), as shown below.
2. Insert the hoist’s lower pivot arm (1) into the channels on the subframe (2), and secure them with the
proper hardware.
2 1
2
1

REVISION A
15
INSTALLATION .
3. Weld the 3/8” spacer as shown below, posioned as far forward on the subframe rail as possible.
4. If necessary, the frame extensions 1034528 and 1034529 (see breakdown on page 12‐13) can be added to
thesubframe.
5. Hoist and subframe assembly need to be installed on the truck frame according to the table and image
shown below. Dimensionsinthetableareapproximate
Chassis
Rear axle center line to rear hinge (X)
(in)
Standard 34
Ford (rear fuel tank) 46
Chevy or Dodge (rear fuel tank) 49

REVISION A
16
INSTALLATION .
6. Using the diagrams below, locate the ideal mounng angle locaon that best fits your applicaon.
7. Drill two holes in the chassis frame and bolt the mounng angles as shown below.

REVISION A
17
INSTALLATION .
8. Weld the mounng angles to the subframe rail as shown below. Ensure that the mounng angle is welded
to the subframe in the “CRITICAL WELD AREA” located below the lower pivot arm, as shown in the image
below. Do not weld the mounng angles to the chassis frame.
9. Weld the rear pivot angle to the chassis frame as shown below. Any excess frame scking out passed the
rear pivot angle should be cut off.

REVISION A
18
INSTALLATION .
10. Slide the spacer collar (1) onto the shaof the body lifoot (2), and slide the lifoot’s shainto the
upper hoist tube (3). Repeat on the other side of the hoist.
11. Install the body guide plates on both sides of the subframe, in one of the two locaons shown below.
1
2
3

REVISION A
19
INSTALLATION .
12. Place the frame rails of the body onto the hoist subframe. Posion the body in the correct locaon and
weld the subframes rear pivots to the frame rails of the body as shown below.
13. Posion each lifoot against the inside of the frame rail of the body and weld them together as shown
below.
14. Once the lifoot and body are welded together, slide the lifoot’s lock collar up against the upper tube
of the hoist and secure it using the set screw.

REVISION A
20
LUBRICATION AND MAINTENANCE .
Lubricate grease zerks in all locaons shown below (8 total). Locaonsindicatedwithredarrowsbelow
CAUTION: ALL grease zerks are to be topped offprior to first use and every month following.