Progress Equal-i-zer 90-00-0600 User manual

OWNER’S MANUAL
90-00-0600 - 600 lb. max loaded tongue / 6,000 lb. max loaded trailer weight
90-00-1000 - 1,000 lb. max loaded tongue / 10,000 lb. max loaded trailer weight
90-00-1200 - 1,200 lb. max loaded tongue / 12,000 lb. max loaded trailer weight
90-00-1400 - 1,400 lb. max loaded tongue / 14,000 lb. max loaded trailer weight
** Your model # can be found on the stickers on either spring arm. Make a note of it here for future reference **
MADE IN THE
U.S.A.
www.EqualizerHitch.com
DEALERS: PLEASE PASS THIS MANUAL ON TO THE
END USER AFTER HITCH INSTALLATION.
Hitch Ball
Not Included
Premium Sway Control Performance

2www.equalizerhitch.com
Congratulations on your purchase of The Original
Equal-i-zer®Sway Control Hitch.
Thank You for your purchase and welcome to the
Equal-i-zer®hitch family. We appreciate your
business and constantly strive to exceed your
expectations.
Read this owner’s manual thoroughly to become
familiar with proper set-up and maintenance
procedures to ensure that your Equal-i-zer®hitch
will give you maximum performance and years of
service.
Happy Towing,
The Employees of Progress Mfg. Inc.
Attention Hitch Owner:
REPLACEMENT
A replacement copy of this manual may be downloaded from
www.EqualizerHitch.com or by calling 1-800-478-5578.
KEEP THIS MANUAL
Keep this manual in a safe place as a reference for regular adjustment and
maintenance.
FURTHER ASSISTANCE
If you do not understand any part of this manual contact a qualied
Equal-i-zer®hitch dealer in your area or Progress Mfg. Inc. customer service
at 1-800-478-5578 or by visiting www.EqualizerHitch.com.

3
A product of
Table of Contents
Page
Parts Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Important Safety Information . . . . . . . . . . . . . . . . . . . . . 6
Important Hitch Information . . . . . . . . . . . . . . . . . . . . . . 7
Step 1: Setup Location . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 2:Install the Hitch Ball . . . . . . . . . . . . . . . . . . . . . 10
Step 3: Attach Hitch Head to Shank . . . . . . . . . . . . . . . . . 11
Step 4: Sway Bracket Assembly Set Up . . . . . . . . . . . . . . . 13
Step 5:Tension Spring Arms . . . . . . . . . . . . . . . . . . . . . 17
Step 6: Weight Distribution Adjustments. . . . . . . . . . . . . . . 19
Step 7: Trailer Angle Adjustments . . . . . . . . . . . . . . . . . . 22
Step 8: Final Tightening . . . . . . . . . . . . . . . . . . . . . . . 23
Step 9: Regular Maintenance . . . . . . . . . . . . . . . . . . . . . 24
Appendix A: Troubleshooting Guide . . . . . . . . . . . . . . . . . 25
Customer Service. . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Appendix B: Weight Distribution Adjustments . . . . . . . . . . . 27
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
TOOLS NEEDED FOR INSTALLATION
The following tools will allow you to install the hitch properly.
1 1/8” Box End Wrench (Shank Bolts)
3/4” Box End Wrench (Link Plates and L-brackets)
1 1/8” Socket (Shank Bolts)
3/4” Socket Wrench (Link Plates and L-brackets)
5/8” Socket or Box End Wrench (Angle Set Bolt)
Measuring Tape
Pencil
Torque Wrench capable of 320 ft. lbs. of torque. (Shank bolts)
Recommended tools for installing the Hitch Ball:
1 7/8” Thin walled socket (available from Progress Mfg. Inc.)
Torque Wrench capable of 430 ft. lbs. of torque (or higher if hitch
ball manufacturer species).

4www.equalizerhitch.com
123
18
19
23
24
25
27
20
26
28
30
29
22
21
4K-14K0610
4
6
7
8
9
10
11
12
13
5
20
14
15
16
17
Item # 29 - Socket Warning Sticker
For longer hitch life, keep Equal-i-zer
®
’s
rotational friction surfaces lubricated.
Keep socket bolt tight. (approx. 45 ft. lbs.)
MAKE SURE THEANGLE SET BOLT (UNDER HITCH HEAD)
AND SHANK BOLTS ARE PROPERLY TIGHTENED BEFORE
EACH DRIVE. CHECK ALL NUTS AND BOLTS FOR PROPER
TIGHTNESS AND FATIGUE AS A COMMON SAFETY PRACTICE.
FAILURE TO DO SO WILL VOID YOUR WARRANTY
WARNING

5
A product of
* Each package contains two (2) spring arms. These arms are specically sized for your hitch head. Spring arms will not function with a hitch head of a different rating.
www.equalizerhitch.com
4-POINT
SWAY CONTROL
™
ATTENTION IT IS THE OPERATORS RESPONSIBILITY TO READ AND UNDERSTAND PRODUCT INSTRUCTIONS AND PROPER USE. IT IS THE DRIVER’S RESPONSIBILITY TO MAKE THE NECESSARY
ADJUSTMENTS TO THEIR DRIVING HABITS, TRAILER, TOW VEHICLE,
AND TOWING EQUIPMENT TO AVOID TRAILER SWAY. TRAILER SWAY HAS MANY CAUSES, INCLUDING: IMPROPER TRAILER LOADING, TIRE PRESSURE, DRIVING TECHNIQUES, SPEED, PASSING VEHICLES,
WEATHER CONDITIONS, ROAD CONDITIONS, AND OTHERS. THERE IS NO 100% QUALITATIVE MEASUREMENT OF TRAILER SWAY OR
SWAY CONTROL. USERS MUST EXERCISE CAUTION ATALL TIMES WHILE TOWING A TRAILER AND ABIDE BY ALL TRAFFIC LAWS.
Model# 90-00-XXXX
Max. Tongue Weight ___ Lbs.
Max. Trailer Weight _____ Lbs.
V5 & SAE Tested
Equal-i-zer®is a product of Progress Mfg. Inc.
For a copy of the hitch instructions call
Progress Mfg. Inc. at 1-800-478-5578 or visit:
MADE IN THE USA
EQAS0308
Item# 28 - Spring Arm Warning Sticker
Item # Part Number Part Description Qty.
1 90-02-4100 Adjustable Shank 1 2 90-04-9224 Hitch Pin Clip 1 3 90-03-9220 Hitch Pin 1 4 90-04-9228 1/2” Nut 4 5 90-04-9290 1/2” Lock Washer 4 6 90-02-5200 Inside Link Plate 2 7 90-04-9281 1/2” x 1-1/2” Bolt 4 8 90-02-5350 Outside Link Plate 2 9 90-04-9270 1/2” x 3-1/2” Bolt 4
10 90-02-5150 L-Bracket 2
11 90-04-9286 Nylock Jam Nut 4
12 90-03-9204 L-Pin 2 13 90-04-9208 L-Pin Clip 2 14 90-03-6200 Snap-up Handle 1 15 90-04-9244 1/4” Snap-up Nut 1 16 90-03-6100 Snap-up Hook 1 17 90-04-9240 1/4” Snap-up Bolt 1 18 90-04-9126 3/4” Nut 2 19 90-04-9120 3/4” Lock Washer 2 20 90-04-9115 3/4” Washer 4
Item # Part Number Part Description Qty.
21 90-03-9105 Spacer Rivet 1 22 90-04-9110 Spacer Washer 6 23 90-03-9212 Socket Pin 2 24 90-04-9216 Socket Pin Clip 2 25 90-03-9700 Angle Set Bolt 1 26 90-02-0600
90-02-1000 90-02-1200 90-02-1400
600 / 6,000 lb. head
1,000 / 10,000 lb. head 1,200 / 12,000 lb. head 1,400 / 14,000 lb. head
1
27 90-04-9131 3/4” x 5” Bolt 2 28
BD064 BD104 BD124 BD144
Arm Warning Stickers
6,000 lb. arm sticker
10,000 lb. arm sticker 12,000 lb. arm sticker 14,000 lb. arm sticker
2
29 BD035 Socket Warning Sticker 2
30* 90-02-0699
90-02-1099 90-02-1299 90-02-1499
6,000 lb. Spring Arm
10,000 lb. Spring Arm 12,000 lb. Spring Arm 14,000 lb. Spring Arm
2

6www.equalizerhitch.com
Important Safety Information
WARNING
WARNING
Read, understand, and follow all safety warnings, setup, use, and main-
tenance instructions of your trailer, tow vehicle, and hitching equipment
before installing your hitch or towing your trailer.
Never cut, weld, grind, bend, or modify hitch components in any way.
It is the drivers responsibility to adjust equipment and driving habits to
match towing conditions. The driver is responsible for their own safety
and the safety of passengers.
Never exceed the specied weight ratings for the trailer, tow vehicle,
hitch, hitch ball, or any other towing equipment.
No hitch setup guarantees that trailer sway will be altogether avoided.
Always load trailer correctly. Follow trailer and tow vehicle manufac-
turers recommendations for placement and quantity of cargo.
Always tow with a minimum tongue weight of 10% of gross trailer
weight.
Always use a hitch ball with a rating that equals or exceeds the trailer
Gross Vehicle Weight Rating (GVWR). Always use a hitch ball size that
correctly matches your trailer coupler size and make sure it is coupled
securely before towing.
Measuring weight distribution setup well does not ensure safe towing.
The operator is responsible for making necessary adjustments to the
hitch to optimize weight distribution and sway control. Each trip is
different, and the weight distribution setup and towing performance
should be evaluated by the operator and adjusted when necessary.
Never tow with your hitch adjusted incorrectly.
Failure follow all safety warnings may result in severe injury or death.

7
A product of
WARNING
WARNING
Check all hardware before each trip. Do not tow your trailer until all
bolts and nuts have been checked for wear and fatigue, are properly
tightened, and all pins and clips are securely in place.
Do not tow your trailer on rough roads. Do not tow your trailer through
profound ditches, dips, or swales. Excessive strain on the spring arms
and hitch head may cause hitch fatigue or failure.
If your dealer installed your hitch, make sure to verify that it is still ad-
justed correctly after loading your trailer and tow vehicle for your trip.
Replace worn, faded, or unreadable warning stickers on the spring
arms and arm sockets.
Do not transfer hitch to a different tow vehicle or trailer without
re-adjusting the hitch.
Important Hitch Information
Weight Distribution:
Weight distribution is the ability of a hitch to transfer some of the tongue
weight of the trailer ahead to the tow vehicle axles, and backward to the
trailer axles. Without weight distribution the tow vehicle “teeter-totters” on
the rear axle of the tow vehicle, and unweights the front axle. Proper weight
distribution transfers weight back to the front steering axle, forcing it back
to the ground.
Proper weight distribution also adds performance to the integrated sway
control feature of your Equal-i-zer®hitch. The Equal-i-zer hitch requires a
minimum tongue weight of at least 10% of gross trailer weight. This tongue
CAUTION
CAUTION
Do not loosen or remove any part of the hitch except the L-pins and L-
pin clips while the hitch is under load.
Always secure tow vehicle and trailer with parking brake and wheel
chocks before setting up or adjusting hitch.

8www.equalizerhitch.com
weight gets distributed, and helps generate the friction needed to reduce
trailer sway.
Sway Control:
Integrated sway control is a built-in, patent pending feature of your
Equal-i-zer hitch. Unlike conventional chain style weight distribution hitch-
es, you do not need to purchase, install, store, or hook up any additional
hardware to get the benets of this sway control. Once the spring arms are
tensioned, the sway control is in force.
Integrated sway control works through the connection between your
spring arms and L-brackets, and between the sockets and hitch head. The
force required by the hitch to distribute weight rests on the L-brackets
through the spring arms and forces the sockets into a bind at the head. The
Equal-i-zer hitch takes advantage of the steel-on-steel friction generated at
these points to help reduce trailer sway.
This added friction makes it much more difcult for the trailer to sway
side-to-side while its being towed, as is usual when you encounter a gust
of wind, or passing semi. When set up well and properly adjusted for your
load, the Equal-i-zer can noticeably reduce sway.
Important Setup Information:
These instructions are a guideline to aid in setting up your hitch. Every
trailer and tow vehicle combination requires a different setup and adjust-
ment because of factors like trailer weight and length, trailer loading, hitch
weight, and tow vehicle suspension and wheelbase. It is not likely that a
good setup for one vehicle combination will work well for another. If you
change tow vehicle and/or trailer, you should change the hitch setup too.
You must use your own best judgment to determine if changes to the
setup are required to ensure a safe and comfortable towing situation. There
is no all-inclusive formula for setting up or adjusting a hitch that will ac-
commodate each combination of trailer and tow vehicle possible.
The setup may need to be changed slightly at times to accommodate
changes in your towing conguration, perhaps even during the same trip.
For example, a trailer that starts with full clean water and propane tanks,
may tow differently when that water becomes black and grey water, and
the propane tanks are empty. Or, a trailer loaded with gear for a long cross
country trip may tow differently than the same trailer loaded for a weekend
getaway. The driver must be conscious of these changes, and adjust the hitch
accordingly.

9
A product of
A setup achieving adequate weight distribution usually brings the trailer
back to a position parallel to the ground after coupling it to the tow vehicle
and engaging weight distribution. It also brings the FRONT of the tow
vehicle back down to just slightly higher than the uncoupled height. The
REAR of the tow vehicle sits slightly lower than its uncoupled height, but
noticeably higher than its height when coupled without weight distribution
engaged.
There is no such thing as a “perfect” setup. The hitch should be set up
to get the best results possible, and then adjusted as necessary for the best
performance possible. You, as the operator, are responsible for your safety,
and the safety of your passengers. Always follow all of the safety precau-
tions described in this owner’s manual.
Remember, no setup guarantees that sway and other towing hazards will
be altogether avoided. However, when set up and adjusted properly, we are
condent that you will experience a much safer and more comfortable tow-
ing experience than you would if towing without an Equal-i-zer hitch.

10 www.equalizerhitch.com
NOTICE
NOTICE
Using a hitch ball with a shank longer than 2-3/8” may damage hitch
and could void your warranty.
Step 1 - Setup Location:
Before installing the hitch, the tow vehicle and trailer should be loaded
just as they will be while traveling. This includes full propane and fresh wa-
ter tanks, and any other cargo the tow vehicle (passengers & gear) or trailer
will carry, including ATVs for toy haulers. Tow vehicle “auto-level” systems
should also be disabled or turned off.
Park the trailer and tow vehicle on level ground and in line with each
other. Chock and uncouple the trailer. Pull tow vehicle ahead about 5 feet to
allow working area and set the parking brake.
Take the initial setup measurements for the tow vehicle by measuring
from the ground to the top of the wheel wells directly above both the front
and back axles of the tow vehicle. See gure 13 on page 19. Record these
on line A of the Weight Distribution Adjustments table in Step 6 on page 19.
Measure the FRONT and BACK of the trailer frame, and adjust the trailer to
be parallel to the ground. Both FRONT and BACK measurements should be
the same.
Step 2 - Install the Hitch Ball:
Remove the hitch head from the packaging and install a properly-sized
hitch ball (not included). Ball diameter must match trailer coupler size.
Select a ball with a 1-1/4” diameter threaded shank no longer than 2
3/8”. If your hitch ball has a smaller shank you must use an appropriate
bushing. Make sure that the ball has a weight rating equal to or greater than
your trailer’s gross vehicle weight rating (GVWR). Always use a lock wash-
er against the nut, unless otherwise specied by ball manufacturer. Torque
nut to ball manufacturer’s specications.
WARNING
WARNING
Never exceed the specied weight ratings for the trailer, tow vehicle,
hitch, hitch ball, or any other towing equipment.

11
A product of
Ofcial Equal-i-zer® hitch balls are manufactured for the right t and
may be purchased from your local RV dealership or online at
www.equalizerhitch.com. If another brand of hitch ball is used, make
sure that it meets size requirements and meets or exceeds all weight ratings.
Hitch balls require a 1-7/8” socket and a torque wrench capable of ap-
proximately 450 ft. lbs. torque for installation. Your nearest Equal-i-zer
dealership will have the tools needed and will usually install the hitch ball
for a reasonable fee.
Step 3 - Attach Hitch Head to Shank:
With the trailer parallel to the
ground, measure from the ground to
the top of the trailer coupler.
See Figure 1.
Trailer Coupler Height: _______
The hitch ball should initially
be placed as close to this height as
possible. Insert the adjustable shank into the receiver on the tow vehicle and
secure it with hitch pin and clip.
Insert the spacer rivet with washers into the back of the hitch head to
pre-load the angle of the hitch head. Start with 5 spacer washers for lon-
ger wheelbase tow vehicles like pickup trucks, and 4 spacer washers with
shorter wheelbase vehicles like an SUV. Slide the bolt channel around the
shank and hold the hitch head so that the top of the hitch ball measures from
the ground as closely as possible to the coupler height. This is generally a
step that requires two people.
Observe where the top slot in the bolt channel aligns with the holes in
the shank. See Figures 2a - 2b. If you can see any part of the shank hole that
is lower than the bolt channel slot, drop the head down to align these holes
for the initial setup. See Figure 2a. If you cannot see the lower hole in the
shank, raise the hitch head so that the top slot aligns with the shank hole
slightly above it, and use this hole for the initial setup. See Figure 2b.
Figure 1

12 www.equalizerhitch.com
Figure 3
In some cases, the shank may need to be turned upward, or a specialty
length shank may be needed so that the ball can be placed at the correct
height. See Figure 3.
Insert a 3/4” shank bolt with a at
washer through the top slot in the bolt
channel and shank hole to hold the head
at the correct height. Slide the at washer,
split (lock) washer, then nut onto the
other side of the bolt, and hand tighten
them. Then repeat this process for the bot-
tom shank bolt. See Figure 4.
Use a wrench to tighten the angle set bolt until it comes into contact with
the shank and lifts the head to where the spacer rivet also comes into solid
contact with the shank. Tighten the angle set bolt an additional 1/2 turn. The
hitch head should be angled down slightly. See Figure 5.
NOTE: The shank bolts will be fully tightened at the end of the set up and
adjustment process.
Figure 4
Figure 2a Figure 2b

13
A product of
NOTE: Extended bumper guards, truck
campers, or rear mounted spare tires can
limit turning radius and may lead to a
collision between tow vehicle and trailer
in a tight turn unless a longer shank is
used. If you are not able to turn tightly
with the standard length shank, consult
with your dealer about purchasing a lon-
ger specialty shank.
Figure 5
Step 4 - Sway Bracket Assembly Set Up:
Measure from the center of the coupler
along the outside of the trailer frame, and
place a mark at 32” on both sides. This is the
center mark for the sway bracket assembly.
Check around the trailer frame and make
sure that there are no gas lines, brake lines, or
electrical wiring that could be affected by the in-
stallation of the link plates. If so, make sure these
are re-routed or avoided and will not be disrupt-
ed or damaged by the link plate installation.
In some cases where there is an obstruction at 32” that cannot be avoid-
ed, the link plates may be moved forward up to a minimum distance of 29”
from the center of the coupler. See Figure 6.
Identify the coupler style that most closely matches your trailer. See Fig-
ure 7. If yours resembles style B, an under frame coupler, skip to the section
marked Style B on page 15.
Style A: If your coupler
matches style A, place your
link plates so that the single
hole is above the frame, and
the L-bracket studs are toward
the top of the frame. See Figure 7a.
29”-32”
Figure 6
A B
Figure 7

14 www.equalizerhitch.com
Figure 7a
Insert two 1/2” x 1-1/2” bolts through
each outside link plate from the back side.
The slot in the back should keep the head
of the bolt from rotating.
Thread a 1/2” x 3-1/2” bolt through the
single hole of the outside and inside link
plates from the outside in. The head of the
bolt should be against the outside link plate
with the bolt pointing inward. Put a split
washer on the bolt and thread a nut onto the end of bolt a few turns. Slide
the link plates over the frame as shown so that the bolts for the L-bracket
studs are facing outward.
Thread the second bolt through the link plate holes closest to the trailer
frame with the head on the outside. Put a split washer on the bolt and thread
the nut onto it from the back side. Refer to Figure 7b for bolt placement
based on your trailer frame height. Pinch the inside and outside link plates
tight to the trailer frame so that both
lay at against the frame. Inside link
plates are sometimes slightly bowed
from the manufacturing process. If
this is the case, the center of the bow
should be placed toward the trailer
frame so that as they are tightened
they atten out against the frame.
Continue holding them in place
while you hand tighten both nuts. Use
wrenches to nish tightening the link
plate bolts until they are snug, alter-
nating from top to bottom 1/2 turn at
a time. Bolts and nuts should be fairly
tight, but do not over tighten them. Link plates must be at against trailer
frame to work correctly. Uneven or over tightening may cause link plates to
bow and “walk” along frame. See Figure 8.
NOTICE
NOTICE
Do not use impact wrench to tighten link plate or L-bracket bolts.
Figure 7b

15
A product of
Slide the L-brackets onto the link plate studs with the spring arm plate
facing away from the trailer. For the initial setup, leave 2 holes showing at
the top above the studs and two below. They may need to be adjusted up or
down later. Thread on the nylock nuts and tighten them.
Style B: If your coupler matches style B, or is a “V-nose” trailer, See gure
7 on page 13, install your link plates ‘upside-down’ by placing your link
plates so that the single hole is below the frame, the L-bracket studs are
toward the bottom of the frame, and the bottom mounting bolt is lifted up
tightly to the bottom of the frame. See Figure 7c.
Figure 7c
NOTE: If there is space between
the bottom bolt and trailer frame, the
brackets are installed Incorrectly.
Correct Installation Incorrect Installation
Insert two 1/2” x 1-1/2” bolts through each outside link plate from
the back side. The slot in the back should keep the head of the bolt from
rotating.
Thread a 1/2” x 3-1/2” bolt through the single hole of the outside and
inside link plates from the outside in. The head of the bolt should be against
the outside link plate with the bolt pointing inward. Put a split washer on the
bolt and thread a nut onto the end of bolt a few turns. Slide the link plates up
from underneath the frame as shown so that the L-bracket studs are facing
outward. Thread the second bolt through the link plate holes closest to the
trailer frame with the head on the outside. Put a split washer on the bolt and
thread the nut onto it from the back side. Refer to Figure 10 for bolt place-
ment based on your trailer frame height.

16 www.equalizerhitch.com
Pinch the inside and outside link plates tight to the trailer frame so that
both lay at against the frame. Inside link plates are sometimes slightly
bowed from the manufacturing process. If this is the case, the center of the
bow should be placed toward the trailer frame so that as they are tightened
they atten out against the frame
Continue holding them in place while you hand tighten both nuts. Use
wrenches to nish tightening the link plate bolts until they are snug, alter-
nating from top to bottom 1/2 turn at a time. Bolts and nuts should be fairly
tight, but do not over tighten them. Link plates must be at against the trailer
frame to work correctly. Uneven or over tightening may cause link plates to
bow and “walk” along frame. See Figure 8.
NOTICE
NOTICE
Do not use impact wrench to tighten link plate
or L-bracket bolts.
Once the inverted brackets are installed
correctly – use a 3/8” x 1” self-tapping washer-
head bolt to secure each outside link plate against
the frame (see gure 7d). This bolt (95-03-5610)
may be obtained from Progress Mfg. Inc.
Locate the hole in the outside link plate that
is nearest the center of the trailer frame (bottom
of the four holes). Using a center punch, make
a mark on the frame through the center of this
bracket hole. Then, drill an 11/32” hole at this
location. You may want to use a smaller drill bit
rst to make a pilot hole.
After completing the 11/32” hole, install the
3/8” x 1” self-tapping washer-head bolt. Tighten
the bolt until it is snug against the bracket. Be
careful not to over tighten and break the bolt.
Slide the L-brackets onto the link plate studs with the spring arm
plate facing away from the trailer. For the initial setup, leave 2 holes
showing at the top above the studs and two below. They may need to be
adjusted up or down later. Thread on the nylock nuts and tighten them.
Figure 7d

17
A product of
Correct
Correct
Incorrect Incorrect
Tighten to
look like this
Figure 8
Illustrations are exaggerated for easier visualization.
NOTICE
NOTICE
Do not pound directly on the sockets to move them. Pounding may cause
the sockets to crack or break. Use only the lever force of the spring arm
to move tight sockets. Loosen the socket bolt if required. Re-tighten them
once the socket has been moved.
Step 5 - Tension Spring Arms:
WARNING
WARNING
Never tow with loose socket bolts. Tighten socket bolts to a minimum of
45 ft. lbs. torque before each towing session.
Insert spring arms into the sockets in the hitch head. Arms for the 6K,
10K, and 12K models are not side specic and can be installed on either side
of the hitch. Arms for the 14K hitch are notched off center slightly. The arm
should be inserted into the socket with the notch on the inside, and with the
label facing out.

18 www.equalizerhitch.com
Figure 10 Figure 11
Figure 9
Insert the socket pin through the hole in the socket and spring arm, and
secure it with the socket pin clip. You may need to use the spring arm as a
lever to spread the sockets open. This is to allow the spring arms to be lifted
and placed onto the L-bracket.
Back tow vehicle to trailer and lower coupler onto ball. Lock the cou-
pler. Continue to retract the tongue jack until it raises off the ground about
1”. Measure the tow vehicle height again exactly above the rear axle, to
the same point you measured to earlier when uncoupled. Record this on
line B of the Weight Distribution Adjustments table in Step 6 on page 17.
With the tow vehicle still coupled to the trailer, use the tongue jack to
lift both vehicles until you can swing the spring arms into place over the L-
brackets. See Figure 9.
If you reach the top of the jack before the spring arms will swing into
position, you can use the Snap-up Lever to lift the spring arms up and onto
the L-brackets. Use the L-pins and clips to secure the spring arms on the L-
brackets. See Figure 10-11.
With the spring arms resting on the L-bracket and the trailer and tow ve-
hicle in line with each other, check to make sure that there is a minimum of
3” from the end of the spring arms to the center of the link plates. See Figure
12, page 19. Move and re-tighten the link plates if necessary.

19
A product of
3”
minimum
Retract the tongue jack until the weight
of the trailer settles onto the tow vehicle,
and the foot of the jack comes off the
ground about 1”.
Figure 12
Step 6 - Weight Distribution Adjustments:
Use the following guidelines to set up and adjust your Equal-i-zer for
weight distribution. Good weight distribution is a critical component of the
Equal-i-zer setup. A hitch that is set up poorly for weight distribution will
not perform like one that is set up well. Every tow vehicle and trailer com-
bination will react differently to weight distribution. Refer to Appendix B
“Weight Distribution Adjustments” on page 25 for a more detailed descrip-
tion of factors that inuence weight distribution.
Re-measure the tow vehicle heights exactly as done before in Step 1. Re-
cord these new measurements on line C of the weight distribution setup table.
Measure from ground
to fender through the
center-line of the axle.
Rear Front
Wheel Well Height Rear Front
A Tow vehicle loaded for trip but
still uncoupled from trailer
B Tow vehicle coupled but NO
weight distribution
C Tow vehicle coupled with weight
distribution engaged
Figure 13

20 www.equalizerhitch.com
Good adjustment:
You have most likely achieved good weight distribution adjustment
if your measurements show the following:
1.The FRONT of the tow vehicle measures the same as, or slightly
higher than its uncoupled height. (The “Front” column of Line C is the same
or slightly higher than line A).
2.The REAR of the tow vehicle is slightly lower than its uncoupled
height, but noticeably higher than it is when coupled without weight distri-
bution engaged. (The “Rear” column of Line C is between lines A and B,
but much closer to A. Line C is NEVER HIGHER than line A). See Figure
13 on page 17 and Figure 14 below.
WARNING
WARNING
Weight distribution is only one of many things that inuence sway. The
operator is responsible for making necessary adjustments to all contrib-
uting factors in order to minimize sway.
Under or Over Adjustment:
If the hitch is transferring too little or too much weight you must make
adjustments to the hitch setup. For changes during the initial setup we rec-
ommend adding or removing spacer washers rst to try and keep the spring
arms parallel with the trailer frame. In our experience, this can help reduce
the amount of noise the hitch makes during slow, tight turns. It also gives
you more adjustment options if needed later.
Once the maximum (8) or minimum (4) number of spacer washers has
been reached, further adjustments can be made by raising or lowering the L-
brackets. Minor adjustments later for changes in loading can usually be done
by moving only the L-brackets.
WARNING
WARNING
Over or under adjusted weight distribution decreases tow vehicle stability.
Figure 14