Harbor Freight Tools 02948 User Manual
BOX TRAILER
Model
02948
WARNING!
IMPORTANT INFORMATION
This trailer’s Hitch Coupler MUST be
properly secured to the hitch ball of the towing
vehicle. After assembly and attachment, pull
up and down on the Hitch Coupler to make
sure the hitch ball is fitting snugly in the Hitch
Coupler. There must be no play between the
hitch ball and Hitch Coupler. If there is play,
tighten the Adjustment Nut until no play is
present. If the Adjustment Nut is too tight, the
Handle will not lock. Carefully read and follow
the complete instructions in this manual
BEFORE setup or use.
If the Coupler is not secured
properly, the ball could come loose
while the trailer is in motion, possibly
causing property damage, SERIOUS
PERSONAL INJURY, or DEATH.
800 lb. Maximum Capacity Payload
ASSEMBLY AND OPERATION INSTRUCTIONS
Due to continuing improvements, actual product may differ slightly from the product described herein.
For technical questions or replacement parts, please call 1-800-444-3353.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright© 2003, 2007 by Harbor Freight Tools®. 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 Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Manual Revised 04j, 07f, 09b
CONTENTS
SPECIFICATIONS .................................................................................... 3
GENERAL SAFETY WARNINGS AND PRECAUTIONS ........................ 3
SPECIFIC PRODUCT WARNINGS AND PRECAUTIONS .....................4
UNPACKING ............................................................................................ 5
ASSEMBLY INSTRUCTIONS ..................................................................6
To Assemble the Tires, Wheels, and Axle:..........................................................6
To Assemble the Frame, Tongue, and Hitch Coupler: .......................................8
To Attach the Axle/Tire Assembly to the Springs: .............................................9
To Attach the Tail Light Bracket: ........................................................................10
To Attach the Tail Light/Wire Set: .......................................................................10
To Attach the Fenders: ........................................................................................11
To Attach the Trailer Bed and Side Panels to the Frame Assembly: ...............11
OPERATING INSTRUCTIONS ............................................................... 12
TIRE INFORMATION ..............................................................................14
Tire Terminology Glossary ..................................................................................14
Tire Markings ........................................................................................................15
Tire Ination and Load Limit ...............................................................................16
TIRE CARE ............................................................................................. 17
Checking Tire Pressure .......................................................................................17
Steps for Maintaining Proper Tire Pressure ......................................................17
Tire Size ................................................................................................................18
Tire Tread ..............................................................................................................18
Tire Rotation .........................................................................................................18
Tire Balance and Alignment ................................................................................18
Tire Repair ............................................................................................................18
VEHICLE LOAD LIMIT ........................................................................... 19
Steps for Determining Correct Load Limit .........................................................19
INSPECTION, MAINTENANCE, AND CLEANING ................................ 19
PARTS LISTS AND DIAGRAMS ............................................................ 20
Parts List ...............................................................................................................20
Assembly Diagram ...............................................................................................21
Wiring Diagram for Lights ...................................................................................22
SKU 02948 For technical questions, please call 1-800-444-3353. Page 2
SPECIFICATIONS
Maximum Payload Capacity 800 lbs.
Hitch Coupler Requirements Class 1 / 1200 Pounds Load Capacity /
2-1/2” Tongue / 1-7/8” Ball
Overall Dimensions 82” L x 51-1/8” W x 30-1/2” H
Trailer Bed Dimensions 55” L x 35” W x 1/2” Thick
Front/Side Panels/Tail Gate Height 12-7/8” High
Axle (w/Spindles) Dimensions 47-1/2” L x 1-5/8” W x 1-1/2” H
Wheels/Rims Dimensions 3.75” J x 8” Diameter
Tire Requirements 4.80/4.00-8 / Load Range: B
Tubeless Nylon; * Maximum Tire Load
Capacity = 590 lb. At 60 PSI
Tail Lights 12 Volt DC / D.O.T. Approved
Ship Weight / Net Weight 204 Lbs / 197 Lbs
Note: Gross Vehicle Weight Rating = 1,000 lb., Gross Axle Weight Rating = 1,080 lb.
Gross Vehicle Weight Rating assumes an even load weight distribution on the trailer
bed. Uneven load distribution may result in exceeding individual tire maximum
weight capacity and additionally may cause instability on trailer during cornering.
Save this Manual
You will need this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice number on the inside of the front
cover. Keep this manual and invoice in a safe and dry place for future reference.
GENERAL SAFETY WARNINGS AND PRECAUTIONS
KEEP WORK AREA CLEAN AND DRY. 1. Cluttered, damp, or wet work areas invite
injuries.
KEEP CHILDREN AWAY FROM WORK AREA. 2. Do not allow children to handle
this product.
STORE IDLE EQUIPMENT. 3. When not in use, tools and equipment should be stored
in a dry location to inhibit rust. Always lock up tools and equipment, and keep out
of reach of children.
DO NOT USE THIS PRODUCT IF UNDER THE INFLUENCE OF ALCOHOL OR 4.
DRUGS. Read warning labels on prescriptions to determine if your judgement or
reexes are impaired while taking drugs. If there is any doubt, do not attempt to
use this product.
USE EYE PROTECTION. 5. Wear ANSI-approved safety impact eye goggles when
assembling this product. ANSI-approved safety impact eye goggles are available
from Harbor Freight Tools.
REV 09b
SKU 02948 For technical questions, please call 1-800-444-3353. Page 3
DRESS SAFELY. 6. Do not wear loose clothing or jewelry, as they can become
caught in moving parts. Wear a protective hair covering to prevent long hair from
becoming caught in moving parts. If wearing a long-sleeve shirt, roll sleeves up
above elbows.
DO NOT OVERREACH.7. Keep proper footing and balance at all times to prevent
tripping, falling, back injury, etc.
INDUSTRIAL APPLICATIONS MUST FOLLOW OSHA REQUIREMENTS.8.
STAY ALERT.9. Watch what you are doing at all times. Use common sense. Do not
use this product when you are tired or distracted from the job at hand.
CHECK FOR DAMAGED PARTS.10. Before using this product, carefully check that
it will operate properly and perform its intended function. Check for damaged parts
and any other conditions that may affect the operation of this product. Replace or
repair damaged or worn parts immediately.
REPLACEMENT PARTS AND ACCESSORIES:11. When servicing, use only identi-
cal replacement parts. Only use accessories intended for use with this product.
Approved accessories are available from Harbor Freight Tools.
MAINTAIN THIS PRODUCT WITH CARE.12. Keep this product clean and dry for
better and safer performance.
MAINTENANCE:13. For your safety, service and maintenance should be performed
regularly by a qualied technician.
USE THE RIGHT TOOL FOR THE JOB.14. Do not attempt to force small equipment
to do the work of larger industrial equipment. There are certain applications for
which this equipment was designed. It will do the job better and more safely at the
capacity for which it was intended. Do not modify this equipment, and do not use
this equipment for a purpose for which it was not intended.
WARNING:15. The warnings, precautions, and instructions discussed in this manual
cannot cover all possible conditions and situations that may occur. The operator
must understand that common sense and caution are factors, which cannot be built
into this product, but must be supplied by the operator.
SPECIFIC PRODUCT WARNINGS AND PRECAUTIONS
TO AVOID PERSONAL INJURY AND/OR PROPERTY DAMAGE, DO NOT EX-1.
CEED THE TRAILER’S MAXIMUM CAPACITY OF 1,000 POUNDS GROSS VE-
HICLE WEIGHT RATING OR 1,080 POUNDS GROSS AXLE WEIGHT RATING.
BEFORE EACH USE, ALWAYS EXAMINE THE TRAILER FOR PROPER TIRE 2.
(A15) AIR PRESSURE, DAMAGED TAIL LIGHTS (A11), DAMAGED SIDE RUN-
NING LIGHTS (A7), LOOSE BOLTS AND NUTS, STRUCTURAL CRACKS,
SKU 02948 For technical questions, please call 1-800-444-3353. Page 4
BENDS, AND ANY OTHER CONDITION THAT MAY AFFECT ITS SAFE OPERA-
TION. Do not use the Trailer even if minor damage appears.
NEVER ALLOW ADULTS, CHILDREN, OR PETS TO RIDE IN THE TRAILER.3.
BEFORE EACH USE, ALWAYS ATTACH THE SAFETY CHAIN (A19) OF THE 4.
TRAILER TO THE TOWING VEHICLE. Make sure the Safety Chain is attached
to the towing vehicle with the same length for each side. Do not allow the Safety
Chain to drag on the ground.
ALWAYS CHECK TO MAKE SURE THE PAYLOAD BEING TRANSPORTED IS 5.
PROPERLY AND SAFELY SECURED IN THE TRAILER. Load the Trailer evenly
from side to side with 60% of the load forward of the Axle (A8).
MAKE SURE THE TOWING VEHICLE IS CAPABLE OF TOWING THE TRAILER 6.
AND ITS PAYLOAD. Make sure the hitch on the towing vehicle is capable of towing
the Trailer and its payload. The towing capacity of the hitch is typically stamped
on the hitch drawbar.
MAKE SURE THE HITCH COUPLER (A14) AND THE VEHICLE’S BALL HITCH 7.
(not included) ARE OF EQUAL MATING SIZE (1-7/8”) AND ARE RATED EQUAL
TO OR GREATER THAN THE WEIGHT OF THE TRAILER AND ITS PAYLOAD.
DO NOT EXCEED 45 MILES PER HOUR WHEN TOWING THE TRAILER.8. Excess
speed is a major cause of vehicle-trailer accidents.
THE TAIL LIGHT BULBS SUPPLIED WITH THIS TRAILER ARE FOR A 12 VOLT 9.
DC ELECTRICAL SYSTEM ONLY. Do not attempt to power the Light Bulbs with
any other type or voltage electrical current.
WHENEVER POSSIBLE, PARK THE TRAILER ON A FLAT, LEVEL, PAVED, 10.
SURFACE AND CHOCK BOTH TIRES TO KEEP THE TRAILER FROM ACCI-
DENTLY MOVING.
TRAILER LICENSING NOTICE:11. Some states may consider this Trailer a vehicle
requiring registration, licensing, and titling. Check with your State Department of
Motor Vehicles for information and guidance on registering, licensing, and titling
the Trailer.
DO NOT EXCEED THE MAXIMUM WEIGHT CAPACITY OF 590 POUNDS PER 12.
TIRE AT 60 PSI.
UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List near
the end of this manual are included. If any parts are missing or broken, please call Harbor
Freight Tools at the number shown on the cover of this manual as soon as possible.
SKU 02948 For technical questions, please call 1-800-444-3353. Page 5
ASSEMBLY INSTRUCTIONS
Note: For additional references to the parts listed below, refer to the Assembly Diagram
near the end of this manual.
To Assemble the Tires, Wheels, and Axle:
IMPORTANT! Whenever a Hub (A9) on a new unit requires assembly (or a 1.
Hub is disassembled for maintenance), the following procedures MUST be
followed:
Using a suitable solvent, thoroughly clean the Bearings (A9), Seal (A9), Castle Nut 2.
(11), and the rest of the parts of the Hub Assembly (A9) of all grease, dirt, metal
shavings, or any other foreign object. The parts must be cleaned even if they
are new or appear clean.
Allow all parts to dry completely.3.
Make sure your hands are clean and the bearing packer (not included) is also 4.
clean.
Place fresh, clean bearing grease in the bearing packer.5.
With the grease-lled bearing packer in one hand and the Bearing (A9) in the other, 6.
press the Bearing into the grease, forcing the grease inside the slots in the Bearing.
Continue doing this until every slot in the Bearing is completely full of grease.
During the rest of the assembly, be careful not to get any dirt or debris on any 7.
part of the hub assembly.
REV 05b
SKU 02948 For technical questions, please call 1-800-444-3353. Page 6
COTTER PIN (10)
AXLE (A8)
LUG NUT
(9)
LUG NUT (9)
HUB (A9)
TIRE & RIM (A15)
BEARINGS (A9)
FLAT WASHER (A9)
CASTLE NUT (11)
CAP (A9)
FIGURE A
8. Carefully slide the Hubs (A9) over the Spindles at each end of the Axle (A8). Insert
the Bearings (A9) and the Flat Washer (A9) on the Spindles. Screw a Castle Nut
(11) tightly onto each Spindle. Then back the Castle Nuts off slightly so that the
Hubs can just move freely. (See Figure A)
Place a Tire w/Rim (A15) on each Hub (A9). Secure the Tire w/Rims to the Hubs, 9.
using four Lug Nuts (A9) per Tire. NOTE: Make sure to tighten (torque) the Lug
Nuts to at least 90 ft-lb. (See Figure A.)
Insert an Cotter Pin (A9) through the hole at the end of each Spindle of the Axle 10.
(A8) and spread the Cotter pin. (See Figure A.)
Fill the Caps (A9) with bearing grease. Then, press each Cap onto the Hubs (A9). 11.
(See Figure A.)
REV 05b
SKU 02948 For technical questions, please call 1-800-444-3353. Page 7
Loading...