Maxxhaul 50613 User manual

Read and understand this entire manual before assembling,
installing, operating, or servicing this product.
SAVE THIS MANUAL
Copyrightc2022 by MAXXHAUL. All rights reserved. No portion of this manual or any artwork contained
herein may be reproduced in any shape or form without the express written consent of MAXXHAUL. Due
to continuing improvements, actual product may di󰀨er slightly from the product described herein. Tools
required for assembly and maintenance may not be included.
MAXXHAULMAXXHAUL
FOR THE LONG HAUL
April 2022
50613 Height Adjustable Rack Frame (1 pair)
50620 Crossbars (1 pair)
* These two part numbers sold separately
Aluminum Height Adjustable
Pick-up Truck Rack
INSTRUCTION MANUAL
AND PARTS LIST

IMPORTANT SAFETY
INFORMATION
This is a SAFETY ALERT symbol.
It is used to alert you to
potential personal
injury hazards. Obey all
safety messages that follow this
symbol to avoid possible injury or death.
DANGER indicates a hazardous
situation which, if not avoided, will result in death
or injury.
WARNING indicates a hazardous
situation which, if not avoided, could result in
death or serious injury.
CAUTION indicates a hazardous
situation which, if not avoided, could result in
minor or moderate injury.
NOTICE indicates important infor-
mation which, if not followed, may cause dam-
age to equipment.
SAVE THIS MANUAL
Keep this manual for the safety warnings and
precautions. The manual o󰀨ers important infor-
mation on how to assemble, use and maintain
this product.
Write the product’s model number and purchase
date on the cover page of this manual.
Keep this manual (and your purchase receipt) in
a safe place.
UNPACKING
The shipment should be thoroughly inspected as
soon as it is received. The signed “bill of lad-
ing” is acknowledgement by the carrier of receipt
in good condition or shipment covered by our
invoice. For your own protection, if any of the
goods called for on the bill of lading are shorted
or damaged, do not accept them until the carrier
makes a notation on the freight bill of the shorted
or damaged goods.
Notify MAXXHAUL immediately if any hidden
loss or damage is discovered after receipt.
WARNING concerning Risk of Eye
Injury. Wear ANSI approved eye
protection.
WARNING concerning Risk of
Hearing Loss. Wear hearing pro-
tection.
Denition of Symbols
IMPORTANT SAFETY
INSTRUCTIONS
1. Read and understand all
safety warnings and instructions.
Failure to follow the warnings and instructions
may result in serious injury or death. Save all
warnings and instructions for future reference.
2. Personal and Work Area Safety
A. Always wear ANSI approved
safety goggles.
B. Always wear hearing protection
when working in noisy environ-
ments. Prolonged exposure to high intensity
noise can cause hearing loss.
C. Use safety equipment. Safety
shoes, hard hat and work gloves
must be used for applicable conditions.
Model 50613 / 50620 Page 2
D. Dress appropriately. Never wear loose t-
ting clothing or jewelry when working. Contain
long hair, and keep hair, clothing and gloves
away from moving parts.
E. Use common sense when working. Stay
alert and concentrate when setting up and using
this Product. Never work while under the inu-
ence of alcohol, drugs or medications.
F. While assembling and using this Product,
keep work area clean and well lighted. Keep
spectators and children out of the work area.
DANGER
WARNING
CAUTION
NOTICE
INSTRUCTION
MANUAL
DANGER
WARNING
CAUTION
NOTICE
DANGER
WARNING
CAUTION
NOTICE
DANGER
WARNING
CAUTION
NOTICE
INSTRUCTION
MANUAL
INSTRUCTION
MANUAL
INSTRUCTION
MANUAL
INSTRUCTION
MANUAL

3. Use of this Product
A. This Product must be securely bolted into the
bed of the truck. The front and back Truck Racks
of this Product have a combined maximum carry
capacity stated in following 3.C, and weight must
be evenly distributed.
B. This Product is designed to carry ladders,
deck boards, piping, rebar, sports equipment and
other long objects. Do not modify this Product
and do not use this Product for purposes that
it was not designed for.
C. Never exceed the maximum weight capac-
ity of 500 lb. (on-road rating) / 300 lb. (o󰀨-
road rating). Weight must be evenly distrib-
uted.
D. Be aware of the danger of “dynamic
loading”. This situation arises when a load is
dropped onto this Product resulting in a short
term excessive load. Dynamic loading can result
in damage and failure of this Product, and per-
sonal injury to the person loading this Product.
E. Never load people or animals onto this
Product. Keep children and spectators well
clear when loading unloading and using this
Product.
F. Adhere to all Department of Transportation
(D.O.T.) requirements when using this Product.
Use ropes and tie downs to securely hold all
cargo in place.
G. For the vehicle that will support this Product,
read all pertinent vehicle instructions and warn-
ings provided in the owner’s manual. Make
sure the vehicle’s engine is OFF, with parking
brake set, before loading or unloading this
Product.
H. Before installing this Product, and before
making any alterations to the truck liner, make
sure that no electrical lines or gas tanks are in
the path of the work being done. After installation
of this Product, recheck electrical lines and brak-
ing system to insure proper operation.
I. When not in use, remove this Product from the
vehicle and store indoors.
J. Maintain labels and nameplates on this
Product. They contain important information and
must always remain readable.
Keep in mind that the warnings previously
discussed cannot cover all possible condi-
tions or situations that could occur. It is
important that the person setting up and
using this Product understands that common
sense and caution are factors which cannot
be built into this Product, and must be sup-
plied by the person(s) using this Product.
4. Special Note
This Product consists of
SKU#50613 and SKU#50620, which are sold
SEPARATELY.
Ensure you have both SKUs procured and have
their packages on hand before proceeding with
the following assembling and installation pro-
cess.
Model 50613 / 50620 Page 3
50620
50613
DANGER
WARNING
CAUTION
NOTICE

ASSEMBLING AND SETTING UP
Always wear ANSI approved
safety goggles.
Refer to picture below of a completely assem-
bled Product, and Parts Diagram at the end of
this manual.
A. Assemble the Product
1. Take out 1 Post Component consisting of 1
Post (C), 1 Sleeve (E) 2 Threaded Plates (F)
and 1 Self-tapping Screw (J). Double check if all
above parts are in place.
2. Insert 2 Gaskets (G) into the square shaped
space in the Post Component, then insert the
whole Post Component (with 2 Gaskets (G)
inserted) into the open end of a Foot A (D1).
Connect Foot A (D1) and Post Component by 2
Gaskets (G), 4 Spring Washers (H) and 4 Bolts
(I).
3. Take out another Post Component and con-
nect it with Foot B (D2) by 2 Gaskets (G), 4
Spring Washers (H) and 4 Bolts (I).
Note#1:
The two Uprights that you assembled in above
step 2 and step 3 should lean against each
other, and the shorter edge of L-shape plate of
Foot A and Foot B should be at the inner side.
See below pictures.
Note#2:
Height of all Uprights must be same. You can
adjust their heights by loosing Bolts (I), adjust to
suitable positions then tighten the Bolts (I) again.
INSTRUCTION
MANUAL
Post Component
G
D1
I
H
Model 50613 / 50620 Page 4
C
E
F
J
Post Component

4. Assemble 2 Cargo Retainer Components,
each shall be assembled using 1 Cargo Retainer
(R), 1 Knob (S), 1 Spring Washer (H), 1 Big
Washer (L) and 1 T-shape Bolt (O).
Note:
DO NOT tighten T-shape Bolts (O) with Knob
(S) for now. They should remain loose until Step
B.7.
5. Take o󰀨 Caps (B) from the ends of a Cross-
bar (A), Slide Cargo Retainer Components and
T-shape Bolts (O) into the opening end of the
Crossbar (A), make sure two Cargo Retainers
(R) are face to face (two Knobs (S) are far away
from each other). Replace Caps (B) at the ends
of the Crossbar (A).
6. By completing above Step 1 to Step 5, you
should have 2 left Uprights, 2 right Uprights and
2 sets of Crossbar (with Cargo Retainers Com-
ponents and T-shape Bolts (O) installed). See
below picture.
B. Installation
Mounting this Product to the truck
bed requires complete assembly.
If the truck bed has a liner, minor modications
may need to be made to the liner. Components
can be bulky to position in place. It is recom-
mended that two people complete the assembly
and setup. The installation of this Product should
be done by qualied service technicans.
This Product is not compatible with truck beds
equipped with Tool Boxes/Side Boxes, or utility
Track System, or covered with Caper Shell/Ton-
neau Cover.
1. Clean bedrails. Position left Upright to left bed-
rail as close to cab as possible.
O
L
H
S
R
Cargo Retainer
Component
Model 50613 / 50620 Page 5
Cargo Retainer
Component
A
OB
S
R
X2
X2 X2
DANGER
WARNING
CAUTION
NOTICE

Model 50613 / 50620 Page 6
Note: Mount location is di󰀨erent for each bed
design and may require adjustment to avoid
interference with hardware mounting.
*Skip below Step 2, if a liner was not installed.
2. If the truck bed has a liner, two rectangular
cut-outs will have to be cut in the liner as
shown in the below photos, otherwise the
Truck Racks can’t be secured by C-Clamps.
Approximate size of cut-outs is 1-1/2” wide x
3-1/2” height. It is recommended that the top
and sides of the cut-out be made rst, and the
bottom edge be folded inward (this will help hold
the C-Clamps (A) in place while they are being
secured to the Foots). We suggest that the dis-
tance between the inner edge of the rectangular
cut-outs shall be 6”. Such distance shall NOT
exceed 7-1/2” otherwise it will cause an installa-
tion failure.
3. Secure the left Upright on left bedrails with 2
C-Clamp A (M) and 2 C-Clamp B (N), and secure
them using 2 Long Bolts (K), 2 Spring Washers
(H) and 2 Big Washers (L).
4. Repeat above Steps to install right Upright.
Make sure the distance between
right Upright to cab is same with the distance
between left Upright to the cab, so that two Up-
rights are aligned. See below picture.
5. Put Crossbar (with Cargo Retainer Compo-
nents and T-shape bolts (O) installed) on top
of the left and right Uprights, alight the T-shape
bolts (O) with the holes on top of the uprights.
left Upright
K
H
L
M
N
Liner
Cut-outs
1-1/2”
3-1/2”
6”
Side View
DANGER
WARNING
CAUTION
NOTICE

Model 50613 / 50620 Page 7
6. Measure and center the Crossbar (A) of the
Truck Rack.
7. Secure Crossbar (A) by tightening Locknuts
(Q). (Wrench in below picture is not included.)
Adjust all Cargo Retainer Components to desired
positions, then secure all Cargo Retainer Com-
ponents by tightening Knobs (S).
8. Repeat above Step 1 - 7 to mount the rear
Truck Rack on the bed rails.
When mount the left and right
Uprights on the rear of the bedrails, ensure that
they are as close as possible to tailgate. Using a
tape measure, ensure equal front-rear Crossbar
spacing.
Some accessories require a
specic distance between Crossbars. If installing
secondary accessories, check accessory tment
prior to positioning and securing.
9. Above picture shows the nal status of this
Product. Please ensure that two Truck Racks are
in same height. If not, please release and adjust
related hardware to ensure two Truck Racks are
in same height, then tighten all hardware again.
10. Check all connection points in front and rear
Truck Racks to ensure all of them are secured
tightly.
OPERATION
Adhere to all Department of Transportation
(D.O.T.) requirements when using this product.
Use ropes and tie downs to securely
hold all cargo in place.
Do not exceed the Truck Rack’s
maximum capacity of 500 lb. (on-road rating) /
300 lb. (o󰀨-road rating).
MAINTENANCE
1. Frequently check the condition of the Product.
Make sure all components are in good condi-
tion. If the Product becomes damaged through
an accident, or if any weld damage is noted, the
Product should be replaced.
2. Check to make sure that all hardware is tightly
secured in place. Keep the Product clean.
3. When the Product is not being used, it should
be removed from the vehicle and stored indoors.
S
Q
A
Cargo Retainer
Component
DANGER
WARNING
CAUTION
NOTICE
DANGER
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CAUTION
NOTICE
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NOTICE

SPECIFICATIONS
Maximum Weight
Capacity
500 lb. on-road rating;
300 lb. o󰀨-road rating.
Weight must be evenly
distributed.
Scope of Adjustable
Height
18-3/4” to 28” (from top
surface of Crossbar to
truck bed mounting sur-
face)
Width of Truck bed
that ts this Product
Up to 78” (Truck bed in-
ner width)
Model 50613 / 50620 Page 8

A
B
C
E
D1
F
G
I
H
J
K
L
M
N
O
P
Q
RS
H
L
O
D2
O
NO. Parts Description Qty
A Crossbar 2
B Cap 4
SKU#50620
PARTS LIST
SKU#50613
PARTS LIST
PARTS DIAGRAM
NO. Parts Description Qty
C Post 4
D1 Foot A 2
D2 Foot B 2
E Sleeve 4
FThreaded Plate 8
G Gasket 16
H Spring Washer 28
I Bolt M8 x 20 16
JSelf-tapping Screw ST4.2 x 9.5 4
K Long Bolt M8 x 60 8
L Big Washer 8 12
MC-Clamp A 8
N C-Clamp B 8
OT-shape Bolt M8 x 25 12
P Washer 8 8
Q Locknut M8 8
R Cargo Retainer 4
S Knob 4
Model 50613 / 50620 Page 9