NHTSA ID Number: 10175983
Manufacturer Communication Number: LIT-122-00
TSB/Document Date: 2020-06-02
Summary
Light Duty Catalog 600-8,000 Lbs. Axle Capacity
Table of Contents
INTRODUCTION
10" x 2-1/4" 3,500 lbs. Hydraulic Brake - Parking Feature......... 39
Video Gallery....................................................................2
Important Information......................................................3
Product Information
NEV-R-ADJUST® Product Information............................................ 5
NEV-R-LUBE® Product Information................................................. 6
Torflex® Product Information.......................................................... 7
Leaf Spring Product Information.................................................... 8
Airflex® Product Information.......................................................... 9
600 - 1100 LBS. CAPACITY
10" x 2-1/4" 3,500 lbs. Hydraulic Brake Free Backing................ 40
Disc Brake for 3,500 lbs. Axles................................................... 41
Disc Brake for 3,500 lbs. Axles................................................... 42
Recommended Wheel Clearance for 3,500 lbs. Disc Brake......... 43
4100-6000 LBS. CAPACITY
Application Information
Torflex® Application Information................................................... 44
Leaf Spring Application Information............................................ 46
Hub Groups
655 Hub Group - For D44..........................................................48
Application Information
Torflex® Application Information................................................... 10
Hub Groups
440 and 545 Hub Group............................................................12
Brakes
7" x 1-1/4" 2,200 lbs. Electric Brake......................................... 13
7" x 1-1/4" 2,200 lbs. Electric Brake With Parking Feature......... 14
7" x 1-3/4" 2,500 lbs. Hydraulic Brake...................................... 15
1000 - 2200 LBS. CAPACITY
655 Hub Group - For D52/D60.................................................. 49
655 Nev-R-Lube® Hub Group...................................................... 50
Brakes
10" x 2-1/4" 4,400 lbs. Electric Brake Manual Adjust ................ 51
10" x 2-1/4" 4,400 lbs. Nev-R-Adjust® Electric Brake................. 52
12" x 2" 6,000 lbs. Electric Brake............................................... 53
12" x 2" 6,000 lbs. Electric Brake With Parking Feature................ 54
12" x 2" 6,000 lbs. Nev-R-Adjust® Electric Brake........................ 55
12" x 2" 5,200 lbs. Hydraulic Brake........................................... 56
12" x 2" 5,200 lbs. Hydraulic Brake With Parking Feature........... 57
Application Information
Torflex Application Information................................................... 16
Disc Brake for 6,000 lbs. Axles................................................... 58
Leaf Spring Application Information............................................ 18
Recommended Wheel Clearance for 6,000 lbs. Disc Brake......... 59
®
Hub Groups
440 and 545 Hub Group............................................................19
Brakes
7" x 1-1/4" 2,200 lbs. Electric Brake......................................... 20
7" x 1-1/4" 2,200 lbs. Electric Brake With Parking Feature......... 21
7" x 1-3/4" 2,500 lbs. Hydraulic Brake...................................... 22
2300 - 4000 LBS. CAPACITY
5500-7000 LBS. CAPACITY
Application Information
Torflex® Application Information................................................... 60
Leaf Spring Application Information............................................ 64
Hub Groups
865 and Demountable Hub Group.............................................. 66
655 and 865 Nev-R-Lube® Hub Group........................................ 67
Application Information
Torflex® Application Information................................................... 23
12" x 2" 6,000 lbs. Electric Brake............................................... 68
Leaf Spring Application Information............................................ 25
12" x 2" 6,000 lbs. Electric Brake With Parking Feature.............. 69
12" x 2" 6,000 lbs. Nev-R-Adjust® Electric Brake........................ 70
Hub Groups
545 Hub Group - For D30/ #10L............................................... 27
12" x 2" 7,000 lbs. Electric Brake............................................... 71
545 and Other Hub Group - For D35/#10.................................. 28
12" x 2" 7,000 lbs. Nev-R-Adjust® Electric Brake........................ 72
545 Hub Group - For D40/ #10F............................................... 29
12" x 2" 7,000 lbs. Hydraulic Brake........................................... 73
655 Nev-R-Lube® Hub Group...................................................... 30
12" x 2" 7,000 lbs. Hydraulic Brake With Parking Feature........... 74
12" x 2" 7,000 lbs. Hydraulic Brake Free Backing....................... 75
Brakes
10" x 1-1/2" 3,000 lbs. Electric Brake....................................... 31
10" x 1-1/2" 3,000 lbs. Nev-R-Adjust Electric Brake................. 32
®
10" x 2-1/4" 3,500 lbs. Electric Brake....................................... 33
10" x 2-1/4" 3,500 lbs. Electric Brake With Parking Feature....... 34
10" x 2-1/4" 3,500 lbs. Nev-R-Adjust Electric Brake................. 35
®
10" x 2-1/4" 4,400 lbs. Electric Brake Manual Adjust ................ 36
10" x 2-1/4" 4,400 lbs. Nev-R-Adjust® Electric Brake................. 37
10" x 2-1/4" 3,500 lbs. Hydraulic Brake.................................... 38
12" x 2" 7,000 lbs. Hydraulic Brake Free Backing
Parking Feature...........................................................................76
Disc Brake for 6,000 lbs. Axles - Integral Hub & Rotor................ 77
Disc Brake for 6,000 lbs. Axles................................................... 78
Recommended Wheel Clearance for 6,000 lbs. Disc Brake......... 79
Disc Brake for 7,000 lbs. Axles................................................... 80
Recommended Wheel Clearance for 7,000 lbs. Disc Brake......... 81
Airflex® Suspension System
Airflex® for 7,000 lbs. Axles.........................................................82
Table of Contents
7200 LBS. CAPACITY
12-1/4" x 3-3/8" 8,000 lbs. Electric Brake Manual Adjust.......102
12-1/4" x 3-3/8" 8,000 lbs. Hydraulic Brake FSA....................103
Application Information
Torflex Application Information................................................... 84
®
Leaf Spring Application Information............................................ 86
Hub Groups
865 Hub Group..........................................................................88
865 Nev-R-Lube® Hub Group...................................................... 89
12-1/4" x 3-3/8" 8,000 lbs. Hydraulic Brake Manual Adjust....104
12-1/4" x 3-3/8" 8,000 lbs. Hydraulic Brake Parking Feature
Manual Adjust..........................................................................105
12-1/4" x 3-3/8" 8,000 lbs. Hydraulic Brake RSA
Parking Feature.......................................................................106
12-1/4" x 3-3/8" 8,000 lbs. Hydraulic Brake with Parking Feature
Manual Adjust (Uni-Servo)........................................................107
12-1/4" x 2-1/2" 7,200 lbs. Electric Brake – Cast Backing Plate.90
Disc Brake for 8,000 lbs. Axles.................................................108
12-1/4" x 2-1/2" 8,000 lbs. Electric Brake FSA.......................... 91
Recommended Wheel Clearance for 8,000 lbs. lbs. Disc Brake.109
Airflex Suspension System
Airflex® Suspension System
®
Airflex® for 7,200 lbs. Axles – After May 2010............................. 92
Airflex® for 8,000 lbs. Axles – Before May 2010........................110
Airflex® for 8,000 lbs. Axles – After May 2010...........................111
8000 LBS. CAPACITY
SUSPENSION COMPONENTS
Application Information
Torflex Application Information................................................... 93
®
Leaf Spring Application Information............................................ 95
Hub Groups
865 Hub Group - For D80N/ #13N Axles.................................... 97
865 Hub Group..........................................................................98
865 Nev-R-Lube® Hub Group...................................................... 99
Brakes
12-1/4" x 2-1/2" 8,000 lbs. Electric Brake FSA........................100
Double Eye Suspension Components.............................112
Slipper Springs Suspension Components.......................113
U-Bolts & Tie Plates......................................................114
ADDITIONAL INFORMATION
Torflex® Installation......................................................115
Limited Warranty...........................................................118
Locations.....................................................................119
12-1/4" x 3-3/8" 8,000 lbs. Electric Brake FSA.......................101
Video Gallery
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
E-Z FLEX® Suspension
TORFLEX® Suspension
Axles
E-Z LUBE® System
Genuine Brakes
Genuine Replacement
Parts
Leaf Spring Axles
Sway Control
Manual Bleed Hydraulic
Disc
Medium Duty Axles
Nev-R-Adjust® Brakes
Power Bleed Hydraulic
Disc
Removable Spindle
This information is intended as a guide for the proper
specification and application of Dexter running gear, associated
components and accessories.
Dexter offers a full line of trailer axles that can be used in many
different applications. When specifying any pre-engineered
components such as axles, it is the responsibility of the trailer
designer to ensure compatibility with the vehicle and all of its
sub‑systems.
Important Information
The information presented is meant to assist trailer
manufacturers in the specification of their running gear
components. Dexter does not warrant that the information
given constitutes an approved trailer design or application.
Dynamic loading, travel requirements unique to the trailer design,
unusual service conditions, trailer configurations, unequal
load distribution, hitch or coupler arrangements and towing
vehicle suspension characteristics can significantly affect the
performance of any trailer axle and/or suspension systems. It
remains the responsibility of the trailer manufacturer to evaluate,
specify and test their trailer/running gear combination before
production and to certify it as such. While the information
presented at the time of this writing is current, it is subject to
change as designs and components evolve over time.
carrying capacity of the axle assembly is reduced accordingly. As
a specific example, if a pair of wheels is rated at 1500 pounds
each and is used with other components rated at 4000 pounds
per axle, the maximum load capacity is limited to 3000 pounds.
If two tires are rated at 1400 pounds each and are used on
this assembly, the maximum load carrying capacity is limited to
2800 pounds.
Axle Orientation
When working with trailer running gear, it is important to
understand the various features and descriptions of the
equipment. Most trailer axles are directional by nature, that is, it
is imperative that they be installed onto the trailer in the proper
manner to ensure brake functioning and correct wheel alignment.
The front of the axle must be oriented toward the front of the
trailer. The convention used to define right and left is based on
viewing the trailer from the rear and facing in the direction of
forward travel.
Features to help identify the front of the axle:
•
Electric brake wires exit brake backing plates toward the rear
of the axle.
•
12¹⁄₄" hydraulic brakes have view ports through the dust
shield on the back of the assembly. Where the brake lining
is visible in the view port, that will indicate the rear or
secondary shoe which is always oriented toward the rear of
the axle.
•
Slipper springs have the spring eye at the front of the axle.
•
Leaf spring axles with inner wiring have the wires exit the
tube toward the rear of the axle.
•
Torflex® axles have the wheel center trailing behind the axle
tube.
•
Axles using ³⁄₄" spherical ball seat wheel nuts will have right
and left handed threads. The right handed thread must be on
the right end or curb side of the axle while the left handed
thread will be on the left end or road side of the axle.
Disclaimer of Warranty and Limitation of Liability
All users of this product catalog acknowledge that the
information presented is significantly affected by factors
within the exclusive knowledge of the user including, among
other things, service conditions, trailer configurations, load
distributions, hitch and coupler arrangements and tow vehicle
suspension characteristics, that the users have independently
investigated these factors and have solely relied on those
investigations when using this catalog, and that it is the
responsibility of the user to adequately specify, evaluate and test
its trailer/running gear combinations.
DEXTER DISCLAIMS ALL WARRANTIES,
WHETHER WRITTEN, ORAL OR IMPLIED, IN
FACT OR IN LAW (INCLUDING ANY WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE), ASSOCIATED WITH
THE USE OF THE CATALOG AND WITH ANY
INFORMATION PRESENTED BY THIS CATALOG.
Dexter shall not be liable in damages (whether compensatory,
punitive, direct, indirect, special, incidental or consequential) to
any user of this catalog under contract, tort, strict liability or any
other theory of liability, and any user agrees to indemnify and
hold Dexter harmless from any and all claims, actions or other
proceedings (including attorney fees and court costs) arising
out of the use of this catalog to the extent said claims, actions
or other proceedings do not arise out of the sole and exclusive
negligence of Dexter.
Load Ratings
The maximum load carrying capacity of any assembly is limited
to the lowest load rating of any individual component selected.
For instance, the load rating of a pair of wheels may be lower
than other axle components selected. If this is the case, the load
LIGHT DUTY CATALOG
600-8,000 LBS. AXLE CAPACITY
INTRODUCTION
Important Information
Stub Axle Disclaimer
A stub axle is described as a trailer axle spindle, welded to
a short length of tubing. Stub axles may be specified and
purchased as plain spindle/tube weldments or they may be fully
assembled wheel end units, with or without trailer brakes.
These incomplete axles are sold to
manufacturers who wish to incorporate them
into a variety of applications such as specialty
vehicular axles, belt tensioning devices,
machinery pivot points, etc. Dexter has no
control of the design intent of these special
applications and therefore cannot apply a
rating or capacity to these components.
The spindle/tube connection has been designed for suitable
stress levels when used in a trailer axle, mounted to an approved
suspension system and loaded to no more than the stated
capacity. The use of all or part of the product for applications
other than its intended purpose may not be appropriate. It is the
2020.05 | 3
INTRODUCTION
Important Information
customers’ responsibility to determine the efficacy and safety of
their particular application.
Torflex® axles can also be purchased as stub axles. This type of
axle incorporates a self-contained suspension system. They can
be specified as stub assemblies that will be rated for capacity
when fitted with approved mounting brackets. The stated capacity
will be based on the lowest rated component in each assembly.
These stub assemblies are essentially half axles that are
intended to be mounted to the trailer chassis independent of
each other. The trailer manufacturer must assume responsibility
for the integrity of the attachment as well as the final wheel
alignment since independent mounting puts these critical
aspects out of Dexter’s control. If used in pairs of unequal
capacity, the trailer manufacturer should assign a Gross Axle
Weight Rating of not more than two times the capacity of the
lower rated sub assembly.
GAL-DEX®
GAL-DEX® is a galvanic coating used for corrosion protection of
equipment in marine applications and is available on popular
hubs and hub-drums and attaching parts.
•
GAL-DEX® coating is a process that coats parts by
overlapping zinc and aluminum flakes in an inorganic binder.
•
Barrier protection coating serves as a barrier between steel
substrate and elements.
•
Galvanic action – the zinc corrodes to protect the steel.
•
Passivation – the metal oxide slows down the corrosion
reaction (3 times greater protection than pure zinc).
•
Self-repairing coating migrates to damaged areas and
restores barrier protection.
•
Corrosion resistance provides Salt Spray protection in excess
of 1,000 hours.
4 | 2020.05
LIGHT DUTY CATALOG
600-8,000 LBS. AXLE CAPACITY
INTRODUCTION
WHAT IS NEV-R-ADJUST?
During travel, the brakes automatically rotate an adjuster assembly to close the gap
caused by lining wear. This eliminates the need for manual brake adjustments while
maintaining optimum performance and braking power. Dexter’s Nev-R-Adjust brakes
have been extensively tested and proven to reduce stopping distances up to 50%
versus improperly adjusted brakes.
STOP SAFELY WITH NEV-R-ADJUST
Road hazards appear suddenly without warning. With a
trailer behind you there’s no time to second guess your
ability to stop. Proper adjustment is crucial to brake
performance. Improperly adjusted trailer brakes can greatly
increase stopping distances, potentially putting you and
your cargo in harm’s way.
Nev-R-Adjust brakes automatically adjust to proper
clearances during travel allowing you to stop with
confidence. Nev-R-Adjust eliminates the need for repeated,
time consuming manual adjustments.
Dexter’s Nev-R-Adjust brakes have been extensively
tested and proven to reduce stopping distances up to
50% versus improperly adjusted brakes.
• ELIMINATES MANUAL BRAKE
ADJUSTMENTS
• SAVES TIME AND MONEY
ENGINEERING BRAKE
TEST RESULTS
• RETROFITS TO EXISTING AXLES
• REDUCES STOPPING DISTANCE
• TORFLEX® AND SPRUNG AXLES UP TO
7,000 LBS.
• MADE IN THE U.S.A.
• FIVE-YEAR LIMITED WARRANTY
• ISO 9001:2015 CERTIFIED PRODUCTION
ENVIRONMENT
NEV-R-ADJUST SPECIFICATIONS
Available as a
replacement or upgrade
to 10" x 1-1/2", 10" x
2-1/4", and 12" x 2"
electric brakes.
These Nev-R-Adjust
brakes are CSA
approved.
10" x 1-1/2"
LIGHT DUTY CATALOG
600-8,000 LBS. AXLE CAPACITY
10" x 2-1/4"
12" x 2"
2019.XX | 5
INTRODUCTION
WHAT IS NEV-R-LUBE®?
Dexter’s Nev-R-Lube® bearings are comprised of opposed tapered roller
bearing cones sealed inside of a precision ground, one piece double cup
arrangement. These bearings are designed with a small amount of axle end
play. The end play is essential to the longevity of the bearing’s service life.
Nev-R-Lube® is not designed for immersion in water, such as boat trailer use.
SAVE TIME AND MONEY WITH NEV-R-LUBE
• MAINTENANCE FREE
• NO BEARING ADJUSTMENT
REQUIRED
• AVAILABLE ON TORFLEX® &
SPRUNG AXLES BETWEEN
5,200 AND 8,000 LBS.
• AVAILABLE ON 6 ON 5.50" AND
8 ON 6.50" BOLT PATTERN
• MADE IN THE U.S.A.
• FIVE-YEAR OR 100,000 MILES
LIMITED WARRANTY
• ISO 9001:2015 CERTIFIED
PRODUCTION ENVIRONMENT
42MM SPECIFICATIONS
• D52 and D60 leaf spring axle (straight
spindle only)
• #11 Torflex® axles
• Up to 6,000 lbs. capacity
• 6 on 5.50" bolt pattern
• 12" x 2" hub brake sizes
• Disc brake
• Use only zero offset wheels
50MM SPECIFICATIONS
•
•
•
•
•
•
•
•
D70, D72, and D80 leaf spring axles (straight spindle only)
#12, #12V, and #13 Torflex® axles
Up to 8,000 lbs. capacity
8 on 6.50" bolt pattern
12" x 2", 12-1/4" x 3-3/8", and 12-1/4" x 2-1/2" hub brake sizes
Disc brake
Can be used with zero to 1/2" inset wheel at 7,000 lbs. capacity
Zero offset or 0.19" inset wheel only at 8,000 lbs. capacity
Nev-R-Lube® is subject to the maintenance and inspection procedures as outlined in the Dexter Operation Maintenance Service Manual.
6 | 2019.XX
LIGHT DUTY CATALOG
600-8,000 LBS. AXLE CAPACITY
• DEXTER GENUINE BRAKES AND HUBDRUMS
• HEAT-TREATED SOLID STEEL INNER BAR
• PRODUCT CAPACITY RANGING FROM 600
LBS. TO 12,000 LBS.
• TEN-YEAR LIMITED WARRANTY
WHAT IS TORFLEX®?
Dexter’s TORFLEX is a torsion arm type suspension
which is completely self-contained within the axle
tube. It attaches directly to the trailer frame using
brackets which are an integral part of the axle assembly.
The TORFLEX axle provides improved suspension
characteristics relative to leaf spring axles through the
unique arrangement of a steel torsion bar surrounded
by four rubber cords encased in the main structural
member of the axle beam.
INTRODUCTION
• INDEPENDENT RUBBER SUSPENSION
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TSB/Document ID: LIT-122-00
Replacement Service Bulletin Number:
MFR Communication Date: 2020-05-15
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
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- 【29 MAINTENANCE SERVICES FOR PORSCHE SERIES CARS】 It can perform the 29 reset service for Porsche series cars-Oil Reset; SAS; EPB; BMS; ETC; DP ; ABS Bleeding; Injector Coding; TPMS; Air Suspension; Air Conditioner; Head Lamp; Body Stablity Control; Engine Control; Transmission; AirBag; Seat; DWR; MIS; EG; ODO; Clutch; High Voltage Battery; Cruise Control; Radar/Camera; Vehicle Setup,etc. Up to 49 vehicle-maintenance-services for the extra 2 vehicle brands you installed (Tip: Not all services will be worked on every car mode. Some vehicle models may be lack of certain ECU-control modules to make some services may not work).
- UPGRADE SERVICES: Breaks down 29 services to 234 sub-service for car owners/machinist to perform maintenance based on corresponding sub-modules! The detailed sub-service for sub-modules assist to perform precise vehicle maintenance.Improving the accuracy of car maintenance and reducing potential failure risks caused by whole-module maintenance to main modules.such as Oil Reset is refined into Reset maintenance interval/Reset service interval/Service Reset; Engine Control Reset is refined into Delete adaptation data/Short tests/System tests/Swirl-flap actuator/Bleeding high temperature coolant circuit and more.（sub-services vary based on vehicle model/year）
- 【EXTRA VEHICLE MAINTENANC SERVICES FOR SPECIFIC SYSTEMS】Have no ability to perferm calibration to special/specific systems/modules? This OBD2 scanner solve your troubles- for common systems/modules & for specific sytems/modules, assist you to perform diagnsing/calibration/reset/relearn services for non-common modules to finish your car maintenance/ diagnostic (eg: Central Computer system/module :Function activation/Multimedia interface test/AM Field Strength/Current FM Field Strength/FM Field Strength/MOST system reserve/Self-test/Deactivate Production Mode/Reset to factory settings/MOST System Test). (Tip: The services vary based on the vehicle brands)
- 【 MORE PROFESSIONAL BI-DIRECTIONAL ACTUATION TESET 】Exclusive POR V4.0 comes with powerful bidirectional testing capability,do actuaction test for deeper unit-checking after replacement or overhaul (1333 test items for Porsche, like:Fuel high-pressure fuel injector 1-4, Empty tank, Radiator fan, OTA-FC Connectivity, backrest, Backup battery, and more; 2136 test items for Audi; 1670 test items for Benz; 1599 test items for Volvo; 1360 test items for VW; 2705 test items for GM etc.). Help to check your car units work well or not after vehicle maintenance or daily car-body check, keep drives always in safety.(Warm tip:The quantity of test item is based on the units your car has)
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
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