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EQUAL‑I‑ZER 90-00-0400 - User Manual

EQUAL‑I‑ZER 90-00-0400
32 pages
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OWNER’S MANUAL
90-00-0400 400 lb. max loaded tongue / 4,000 lb. max loaded trailer weight
MADE IN THE
U.S.A.
EqualizerHitch.com
DEALERS: PLEASE PASS THIS MANUAL ON TO THE
END USER AFTER HITCH INSTALLATION
Hitch Ball
Not Included
The Best Protection For Your Journey
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2014
3-time Trailer Life Magazine
Readers Choice Gold Winner
READ ENTIRE MANUAL BEFORE STARTING INSTALLATION

Questions and Answers

  • M
    Michael MahoneyAug 1, 2025
    Why is my EQUAL-I-ZER Automobile Accessories tow vehicle too high in front?
    • P
      perrycamposAug 1, 2025
      If your tow vehicle sits too high in the front when using EQUAL-I-ZER Automobile Accessories, it's likely due to insufficient weight distribution. To fix this, add spacer washers or raise the L-bracket, following the under-adjustment guidelines.
  • B
    Brenda CoxAug 5, 2025
    What to do if front end feels “floaty” with EQUAL-I-ZER Automobile Accessories?
    • S
      Sarah VanceAug 6, 2025
      If the front end feels "floaty" while using EQUAL-I-ZER Automobile Accessories, it indicates that not enough weight is being distributed. You should add spacer washers or raise the L-bracket by following the under-adjustment guidelines.
  • C
    Christopher WilsonAug 10, 2025
    Why EQUAL-I-ZER Automobile Accessories creaking and groaning?
    • W
      William JacksonAug 10, 2025
      Creaking and groaning noises in your EQUAL-I-ZER Automobile Accessories can be due to: * Dirty or dry friction surfaces in the hitch head: Clean and lubricate the friction surfaces of the head and sockets using Equal-i-zer High Performance Lubricant. * Normal Function: Some noise is expected with the use of an Equal-i-zer Integrated Sway Control hitch, indicating effective sway-dampening friction.
  • L
    Lynn BrownAug 14, 2025
    What to do if EQUAL-I-ZER Automobile Accessories trailer is too low or too high?
    • D
      Dr. Mario BlackAug 14, 2025
      If your EQUAL-I-ZER Automobile Accessories trailer sits more than 1-1/2” from level, it could be due to: * Incorrect shank causing improper hitch ball height: Consult your local Equal-i-zer hitch dealer about using a specialty length shank. * Improper hitch ball height with correct shank: Follow the Trailer Pitch Adjustment section to change the ball height.
  • M
    mfranklinAug 18, 2025
    What causes bent or broken L-bracket, L-pin, or link plate in EQUAL-I-ZER Automobile Accessories?
    • M
      Michael LeeAug 18, 2025
      Bent or broken L-brackets, L-pins, or Link Plates on your EQUAL-I-ZER Automobile Accessories can be caused by: * Link Plates installed too far back from the hitch ball center: Follow instructions and set the center of the Link Plates between 25”- 32” from the center of the coupler. * Link Plates not installed “upside down” for bottom-mount coupler: Follow the instructions to install Link Plates correctly.
  • B
    Brett BeardAug 22, 2025
    How to fix “walking” sway bracket assembly on EQUAL-I-ZER Automobile Accessories?
    • R
      Ronald MooreAug 23, 2025
      If the Sway Bracket Assembly is “walking” on your EQUAL-I-ZER Automobile Accessories, it is probably because the Link Plates are not tight enough. Follow the instructions to tighten the Link Plates correctly.
  • J
    Jennifer JensenOct 27, 2025
    Why does my EQUAL-I-ZER Automobile Accessories trailer sway?
    • R
      Rachel FullerOct 27, 2025
      Trailer sway with EQUAL-I-ZER Automobile Accessories can occur due to several reasons: * Not enough weight distribution: Address this by adding spacer washers or raising the L-bracket, following the under-adjustment guidelines. * Light tongue weight: Ensure the tongue weight is at least 10% of the Gross Trailer Weight. Reposition the load in the trailer as needed and remove any cargo carriers from the rear of the trailer. * Improperly rated or underinflated tires: Check and inflate or replace tires as necessary. * Loose socket bolts: Tighten the socket bolts to between 60 and 100 ft-lbs torque. * Tow capacity exceeded: Verify your tow vehicle is rated for the trailer’s Tongue Weight and Gross Vehicle Weight. If not, do not tow. * Hitch Undersized: Ensure your Gross Trailer Wei...

Summary

Operator Safety

Understanding Your Hitch

Positioning Vehicle and Trailer

Hitch Ball Installation

Attaching Hitch Head to Shank

Sway Bracket Assembly

Sway Bracket Location

Determine sway bracket placement on trailer frame, typically at 32 inches.

Link Plate Assembly

Assemble link plates to trailer frame, considering coupler style for correct fit.

Spring Arm Setup

Weight Distribution Setup

Measure Tow Vehicle Heights

Measure front axle height uncoupled, coupled without WD, and coupled with WD.

Engage and Secure Spring Arms

Use snap-up lever to lift spring arms onto L-brackets and secure with pins.

Weight Distribution Adjustments

Correcting Adjustment Issues

Adjust by adding/removing spacer washers or altering L-bracket height for balance.

Trailer Pitch Adjustment

Final Tightening Procedure

Regular Maintenance Guide

Installer Checklist

Troubleshooting Trailer Sway

Weight Distribution Factors

Product Warranty Information

EQUAL‑I‑ZER 90-00-0400 Specifications

General IconGeneral
BrandEQUAL‑I‑ZER
Model90-00-0400
CategoryAutomobile Accessories
LanguageEnglish