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Unit will not run or brakes are slow to respond. To determine
if the unit is functioning properly, perform the checks outlined
below
1. Verify that the trailer and tow vehicle are wired according to
the electrical schematic shown in “Electrical Requirements”.
2. Re-bleed the trailer brakes. Any air in the trailer brake
system causes brake delay.
3. If the trailer is equipped with drum brakes, re-adjust the
drum brakes to the trailer manufacturer’s recommended
running clearance.
4. Trailer wiring that is too small can cause slow response (see
section on Electrical Installation Requirements).
5. Slow response can be caused by brake line restrictions. The
trailer brake lines must be at least ³⁄₁₆" in diameter. Steel
tubing must be used as much as possible. Using too much
flexible hose may cause slow brake response.
6. Check to see if the white ground wire runs directly to the
tow vehicle ground. IT MUST NOT BE GROUNDED TO THE
TRAILER ONLY. IT IS IMPORTANT THAT THIS GROUND
WIRE RUNS DIRECTLY TO THE TOW VEHICLE’S
BATTERY GROUND. NO EXCEPTIONS.
7. Detach all wires from the Dexter Axle E/H brake actuator
leaving the blue, black, white, and yellow wires loose. It
is important that the unit is disconnected from any other
wires going to the towing vehicle or breakaway switch and
breakaway battery. Failure to do so may result in a faulty
test.
8. Using a 12 volt battery, connect the white wire to the
negative (-) terminal of the battery.
9. Connect the black wire to the positive (+) terminal of the
battery and the E/H brake actuator will click once. The motor
should not run. If the motor runs, the E/H brake actuator
may be defective.
10. Leave the white wire connected to the negative (-) terminal
of the battery.

-13-

Troubleshooting and Replacement Kits

Troubleshooting Guide

11. Connect the blue and black wires together to the positive (+)
terminal of the battery.
12. The motor should run and the unit should pressurize.
13. If this does not occur, the unit may be defective.
14. Leave the white wire connected to the negative (-) terminal
of the battery.
15. Connect only the yellow wire to the positive (+) terminal of
the battery.
16. The motor should run and the unit should pressurize.
17. If this does not occur, the unit may be defective.

Troubleshooting and Replacement Kits

18. If the unit checks OK, reconnect the wires leading to the
trailer plug and repeat steps 8 through 14 at the trailer plug.
If you do not get the same results as before, the problem is
in the trailer wiring or the electronic brake controller.
Using the breakaway system to troubleshoot a unit that is not
operating correctly
1. With a fully charged breakaway battery and trailer plug
disconnected, pull the breakaway switch on the trailer.
a. If the unit runs and builds pressure, the breakaway
system is functioning properly.
b. If the unit runs and builds pressure when the breakaway
switch is pulled but will not function under normal
operating conditions, the problem most likely is a
defective electric brake controller or defective wiring
between the tow vehicle and Dexter E/H brake actuator.
c. If the unit runs but will not build pressure when the
breakaway switch is pulled, the Dexter E/H brake
actuator may be malfunctioning.
d. If the unit does not run, measure the DC voltage between
the white wire and the yellow wire. If the voltage is
less than 12 volts, either the breakaway switch or the
breakaway wiring is defective.
2. After completing the above steps, reset the breakaway
switch and reconnect the trailer plug.

-14-

1. Reduce the gain setting on the electric brake controller.
2. Check brake adjustment.
Trailer brakes not aggressive enough
1. Increase the gain setting on the electric brake controller.
2. Check brake adjustment.

Replacement Kits
Description

Kit Number

E/H Brake Actuator Fill Cap & Gasket

K71-685-00

E/H Brake Actuator Gaskets

K71-688-00

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Troubleshooting and Replacement Kits

Trailer brakes too aggressive

Limited Warranty

Dexter Axle Limited Warranty
What Products Are Covered
All Dexter Axle Company (“Dexter”) trailer axles, suspensions,
and brake control systems manufactured on or after September 1,
2016, excluding Dexter 6000 series Manufactured Housing Axles.
Additional exclusions include the following brands: UFP by Dexter,
AL-KO (IAC), Titan Brakes and Actuators by Dexter, and BrakeRite
by Dexter products, which are covered under separate warranties.
Limited 1 Year Warranty
As specified in Dexter’s current publication “Operation
Maintenance Service Manual”, grease and oil seals FOR ALL
PRODUCTS have a one (1) year limited warranty to the original
purchaser from the date of first sale of the trailer incorporating
such components. Except as to grease and oil seals, the
following four other warranties are available.
Limited 2 Year Warranty
Dexter warrants to the original purchaser that its electric/hydraulic
brake actuators shall be free from defects in material and
workmanship for a period of two (2) years from the date of first
sale of the trailer incorporating such components.
Limited 5 Year Warranty
Dexter warrants to the original purchaser that its axles,
suspension systems and Genuine Replacement Parts shall be
free from defects in material and workmanship for a period of five
(5) years. The warranty period shall begin from the date of the
original purchase of the trailer and/or Genuine Replacement Parts.
Limited 7 Year Warranty
Dexter warrants to the original purchaser that its Predator Series®
electric brake controllers shall be free from defects in material
and workmanship for a period of seven (7) years from the date of
purchase.
Limited 10 Year Warranty
Dexter warrants to the original purchaser that the suspension
components of its Torflex® axles shall be free from defects in
material and workmanship for a period of ten (10) years from
the date of first sale of the trailer incorporating such suspension
components.
Exclusive Remedy
Dexter will, at its option, repair or replace the affected components
of any defective axle, repair or replace the entire defective
-16-

What You Must Do
In order to make a claim under these warranties:
1. You must be the original purchaser of the trailer in which the
sprung suspension axles or Torflex® axles or components were
originally installed.
2. You must promptly notify Dexter after detection of any defect,
but in any case within the applicable warranty period of such
defect, and provide us with the axle or applicable component
serial number and any substantiation of such defect which may
include, but is not limited to, the return of part(s) that we may
reasonable request.
The axles, suspensions and components must have been installed
and maintained in accordance with good industry practice and
any specific Dexter recommendations, including those specified
in Dexter’s current publication “Operation Maintenance Service
Manual”.

Exclusions
These warranties do not extend to and do not cover defects
caused by:
1. The connecting of brake wiring to the trailer wiring or trailer
wiring to the towing vehicle wiring.
2. The attachment of the running gear to the frame.
3. Parts not supplied by Dexter.
4. Any damage whatsoever caused by or related to any alteration
of the axle including welding supplemental brackets to the axle.
5. Use of an axle on a unit other than the unit to which it was
originally mounted.
6. Normal wear and tear.
7. Improper alignment.
8. Improper installation.
9. Unreasonable use (including failure to provide reasonable
and necessary maintenance as specified in Dexter’s current
publication “Operation Maintenance Service Manual including
required maintenance after “Prolonged Storage”).

-17-

Limited Warranty

axle, or refund the lesser of the original purchase price and the
then-current list price of the axle or components. In all cases, a
reasonable time period must be allowed for warranty repairs to
be completed. Allowance will only be made for installation costs
specifically approved by Dexter.

10. Improper torque values and torqueing of wheel nuts. (The
proper torqueing procedure and torque values are contained
in Dexter’s current publication “Operation Maintenance Service
Manual”).
11. Cosmetic finish or corrosion.

Limitations
1. In all cases, Dexter reserves the right to fully satisfy its
obligations under the Limited Warranties by refunding
the lesser of the original purchase price and the thencurrent list price of the defective axle (or, if the axle has
been discontinued, of the most nearly comparable current
product).
2. Dexter reserves the right to furnish a substitute of replacement
component or product in the event an axle or any component
of the axle is discontinued or is otherwise unavailable.
3. These warranties are nontransferable.
General
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN
LIEU OF ALL OTHER WARRANTIES EXCEPT THAT OF TITLE,
WHETHER WRITTEN, ORAL OR IMPLIED, IN FACT OR IN LAW
(INCLUDING ANY WARRANTY AGAINST INFRINGEMENT OR
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE).

Limited Warranty

These warranties give you specific legal rights, and you may also
have other rights which vary from state to state.
DEXTER HEREBY EXCLUDES INCIDENTAL AND
CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF TIME,
INCONVENIENCE, LOSS OF USE, TOWING FEES, TELEPHONE
CALLS, COST OF MEALS OR LODGING, FOR ANY BREACH
OF ANY EXPRESS OR IMPLIED WARRANTY.
Some states do not allow limitations on how long an implied
warranty lasts, or the exclusion or limitation if incidental or
consequential damages, so the above exclusion or limitation may
not apply to you.
Inquiries regarding these warranties should be sent to:
Dexter Axle Company
P.O. Box 250
Elkhart, IN 46515
Note: Current publication “Operation Maintenance Service Manual”
can be found at www.dexteraxle.com.
-18-

In keeping with our continual commitment to industry safety and
the development of innovative products, please feel free to view
our ongoing video gallery at www.dexteraxle.com/resources/
videos or scan the following QR codes. We are confident these
videos will help educate and promote the Dexter product line that
you, as our customer, are investing in.

Bearing
Maintenance

E/H Actuator
Installation

Electric Brakes

E-Z Flex®
Suspension

E-Z Lube®
System

Genuine Brakes

Genuine
Replacement Parts

Leaf Spring
Axles

Manual Bleed
Hydraulic Disc

Medium Duty
Axles

Nev-R-Adjust®
Brakes

Power Bleed
Hydraulic Disc

Removable
Spindle

Sway Control

Torflex®
Suspension Axles

-19-

Dexter video Gallery

Dexter Video Gallery

Dexter Online Parts Store
From magnets and seals to complete brake and hub kits, Dexter offers a
complete line of genuine replacement parts for your trailer. Most products
are available in-stock and ready to ship within 24 hours direct to you from
the factory. With dedicated customer support and quick turnaround, the
Dexter Online Parts Store helps keep your trailer going.

• Hub Components
• Brake Components
• Suspension Components
• Complete Hub Kits
• Brake Assemblies & Kits
• Brake Controllers & Actuators

Ready for Immediate Shipment
Direct to Your Door
Visit us online at www.dexteraxle.com

-20-

Notes

-21-

Notes

-22-

Notes

-23-

Genuine Dexter axles and components are available
nationwide from our plant locations listed below or
through our network of distributors. Check our web site
for the distributor nearest you.

Dexter Headquarters
Plants 12, 13, 39, 61
UFP
Plant 25

UFP
Plant 24
Plants 15, 62

Plant 21

Dexter - Headquarters

2900 Industrial Parkway East  Elkhart, Indiana 46516
Phone: 574-295-7888  Fax: 574-295-8666
www.dexteraxle.com
Dexter - Plt 12

Dexter - Plt 13

Dexter - Plt 15

Dexter - Plt 21

301 West Pearl Street
Fremont, Indiana 46737
Phone: 260-495-5100
Fax: 260-495-1701

500 South 7th Street
Albion, Indiana 46701
Phone: 260-636-2195
Fax: 260-636-3030

500 Southeast 27th Street
El Reno, Oklahoma 73036
Phone: 405-262-6700
Fax: 405-262-9089

199 Perimeter Road
Monticello, Georgia 31064
Phone: 706-468-6495
Fax: 706-468-2966

Ventline - Plt 39

Dexter Door - Plt 39

Dexter - Plt 61

Dexter - Plt 62

902 South Division Street
Bristol, Indiana 46507
Phone: 574-848-4491
Fax: 574-848-4825
www.ventline.com

902 South Division Street
Bristol, Indiana 46507
Phone: 574-848-4491
Fax: 574-848-4825
www.dexterdoor.com

21611 Protecta Drive
Elkhart, Indiana 46516
Phone: 574-294-6651
Fax: 574-295-6626

301 North Kennedy Street
Shawnee, Oklahoma 74801
Phone: 405-273-9315
Fax: 405-273-1054

UFP - Plt 24

UFP - Plt 25

135 Sunshine Lane
San Marcos, California 92069
Phone: 760-744-1610
Fax: 760-744-1616

1041 Baxter Lane
Winchester, Tennessee 37398
Phone: 931-967-5101
Fax: 931-967-1828

NO PART OF THIS CATALOG MAY BE REPRODUCED WITHOUT DEXTER’S PERMISSION.
ALL PART NUMBERS, DIMENSIONS AND SPECIFICATIONS IN THIS CATALOG ARE SUBJECT
TO CHANGE WITHOUT NOTICE.

OPERATION MAINTENANCE SERVICE MANUAL
GEARED FOR INNOVATION SINCE 1960

ELECTRICALLY CONTROLLED HYDRAULIC
BRAKE ACTUATION DEVICE
E/H 1000 & 1600 BRAKE ACTUATORS

www.dexteraxle.com
2900 Industrial Parkway East n Elkhart, IN 46516
Phone: 574-295-7888 n Fax: 574-295-8666

ISO 9001 Certified

www.dexteraxle.com

4/17

© 2005-2017 Dexter Axle Company. LIT-608-OO