059-Z01-11 Service Bulletin/Repair Instructions

Outside Frame

INSTALLATION INSTRUCTIONS

Width
Multi Adjustable Splined

OutsideTorsion

Frame Axle

Width
Frame Size: Axle brackets can be adjusted to fit a certain frame width

range for each length axle “G”.
Track Width: Is a measurement from the center of the tires. This length

can vary with the different types of wheels that offer varying offsets.

Track is NOT the same as the hub face.
Brake

Flange

Width

Bracket Style: There are two

types

of brackets,

Utility style “I” and

Hub Face

Marine style “K”.
Brake Flange Width: Is measured from the outer surface of the flange

to the same location on the opposite side of the axle.
Brake Flange Width

Torsion Arm Angle: “H” The torsion

arms can be adjusted from 45

Hub Face
degrees down to 25 degrees up.
Each axle length has its own range of positions for mounting the axle

brackets. Do NOT exceed the range shown (Figure 3). Exceeding the

overhang length will create camber and tire wear issues.
With these three adjustments, you can replace almost all custom

torsion axles used today in the hub faces offered.

Figure 1: Straight Axle
NEW AXLE PLACEMENT/INSTALLATION OF WELD-ON FRAME MOUNT

If you are using new frame brackets or welding the frame brackets to

your trailer frame: VERY IMPORTANT: Brackets must be “square” to

the frame. The frame brackets must be welded/attached at the

same distance from the rear or front of the trailer. Failure to do so

will result in a trailer that will travel at an angle when towed.
Figure 2: “V” Bend Axle
1.
Hub Face Width: Is measured from the face of the hub when properly

assembled onto the axle spindle. Hub Face is NOT measured from the

center of the tire. Hub face is NOT the overall length of the bare axle.
Weld-On Frame Mounts (#86884) must be installed directly

across from each other to insure proper axle alignment. Before

mounting the units, measure back from the coupler and mark the

frame to make sure that the two distance measurements (A and

B) are within 1/8 inch of each other. Mark the trailer frame for the

location of the front edge of the frame mount.

Figure 4
Utility Trailer Frame

A
Mark Frame

for Axle
Coupler/Hitch
Center Line
Front of

Trailer
B
Figure 3:
Outside Frame

Width
Marine Trailer Frame

A
Mark Frame

Axle
Coupler/Hitch
Center Line
Front of

Trailer
B
Brake Flange Width

Hub Face
“A” dimension must equal “B” dimension
Straight Axle
V-Bend Axle
Powder Coat Part # Galvanized Part #
Powder Coat Part # Galvanized Part #
Hub Face Length
Outside Frame

Width Range
Brake Flange

Length
86870
86701
N/A
N/A
83”
59-67”
76.66”
86871
86702
86877
86708
85”
61-69”
78.66”
86872
86703
86878
86709
87”
63-71”
80.66”
86873
86704
86879
86710
89”
65-73”
82.66”
86874
86705
86880
86711
91”
67-75”
84.66”
86875
86706
86881
86712
93”
69-77”
86.66”
86876
86707
86882
86713
95”
71-79”
88.66”
©2019 Dexter Axle Company | www.dexteraxle.com
-1-
059-Z01-11 2019.09 | 08242
2.
3.
Clamp the weld on bracket in place. The center line of the axle

will line up with the center line determined by the coupler to axle

measurement. Make sure the short end of the bracket is in the

forward direction (Figure 5).
4.
Using a floor jack and one other person, lift the axle into mounting

position.

Utility Style Mounting Brackets:

A. Bolt the axle to the frame using existing frame brackets.
Weld a 1/4” fillet weld on all sides of the mounting bracket, repeat

for other side.
B. If frame mounting brackets are not present, but needed,

welding of #86884 to frame will be required prior to mounting

(see page 7). Using hardware supplied with #86884, bolt

utility style mounting bracket to frame mount. Short end of the

bracket should face the front of the trailer.

U-bolts

Marine Style Mounting

Bracket:
“Marked” Center Line
Figure 5
Trailer Frame

Rear
Front
A. Tube or Channel Trailer Frame - Mount using two U-bolts for

Trailer Frame

each bracket (Figure 9). U-bolts must be a minimum of 1/2”

diameter.
AXLE BRACKET ASSEMBLY

Figure 6
Nylon Lock Nut Washer
B. I-Beam Trailer Frame – Mount using four 1/2” bolts through

holes drilled in bottom web of I-beam (Figure 8).
Bushing
For
e
Axl
wa

rd
Figure 7
Trailer Frame
Bushing

Washer
Rear
Front
Bolt
Mounting

Bolts
Figure 8
Place the axle underneath the trailer, as close as possible to the

mounting location. Preform the following assembly on the floor.

4. Position bracket on axle tube so that the short end of the

bracket is facing forward. The rear (back) side of the axle has the

identification decals

5.
6.

7.
Figure 9
Trailer Frame
Rear
Front
Tra

ile

rF

xle5.

A

r

Insert the bolt with the bushing into housing so that theabolt goes

under the axle and the threaded part is to the rear of the m

axle.

e

Using the hardware supplied (Figure 6), place a flat washer over

one of the bolts. Next place one of the bushings on the bolt with

the wider end facing the head of the bolt.
U-bolts
Center the Adjustable Torsion Axle

to Frame

the trailer frame. Measure

Trailer

the distance between the25˚

outside of the bracket to the end of the

splined arm (Figure 8 andup

9). Distance must be equal on each

side. DO NOT USE THE AXLE TUBE AS A MEASURING POINT.

Torsion

0˚

Tighten the mounting bolts to the frame first. 150 ft Arm

lbs.
Insert one of the bushings onto the bolt with the narrow end facing

Front

the axle tube.

6.

“Gap”

Trailer Frame

8. Place a flat washer on the bolt along with a nylon lock nut. Snug

7. Re-check measurements on centering the axle on the frame.

the nut on to the bolt but DO NOT TIGHTEN AT THIS TIME.

Rear

Front

8. Tighten the axle mounting

45˚brackets to 100 ft lbs.

9. Repeat for the second bolt.

Mounting

TORSION ARM ASSEMBLY down Bolts

10. Repeat for the opposite side bracket.

1. It is important to match as close as possible the same arm angle

INSTALLATION OF ADJUSTABLE TORSION AXLE

as the original axle.

The variation possible is 45 degrees down to

Trailer Frame

25 degrees up. The end of the splined arm has index marks in a

circularFront

pattern. Use these to lineRear

up with the gap in the torsion

!

arm to assure that you have both sides set at the same arm angle.

These axles are very heavy. It is recommended to use floor jack

Arm angle can only be used in a trailing position, going towards

to lift and position the axle to the frame. The following assembly

the rear of the trailer.

requires at least two people.

Torsion arm in the 25 degree up angle
CAUTION
Torsion arm in the 45

degree down angle
If you are installing on a new trailer, skip to step 4.

1.
Remove wheels and brake lines, if present, from the old torsion axle.
2.
Remove torsion axle from the trailer.
3.
Position the axle mounting brackets to match the existing axle

brackets as closely as possible.
©2019 Dexter Axle Company | www.dexteraxle.com
25˚

up

Front
0˚
Torsion

Arm

“Gap”
45˚

down
-2-
059-Z01-11 2019.09 | 08242
2.
Insert the torsion arm bolt and nylon lock nut, Bolt head should be

in the upper or top of the arm position. Torque to 150 ft lbs.

Torsion arm in the 0 degree angle
Front
Back

SUPER LUBE OPERATING INSTRUCTIONS

1. Remove wheel hubs from the packaging. Hubs are already preassembled and pre-greased.

2.
Slide hub onto spindle, followed by washer and spindle nut.
3.
Tighten the spindle nut to approximately 40 ft. lbs. Turn wheel in

both directions to be sure wheel turns freely.
4.
Turn back spindle nut 1/6 to 1/4 turn to the nearest locking hole.

Hub should turn smoothly with no end play or wobble.
5.
Line up cotter key with nearest locking hole and spread key.
6.
Install the Super Lube dust cap and mount wheel.
The Adjustable Torsion Axle is equipped with Super Lube Spindles. These

spindles allow for easy adding or replacement of grease in the wheel

hub. The hubs are pre-greased with Lucas® Red “N” Tacky grease and

assembled at the factory.

SUPER LUBE “SPINDLE” LUBRICATION MAINTENANCE OR GREASE

REPLACEMENT

1. Remove the rubber plug from the grease (hub) cap.

2.
Use a standard grease gun onto the grease fitting located at the

end of the spindle, making sure the grease gun nozzle is engaged

on the fitting tightly.
3.
Pump grease into the fitting, while slowly turning the wheel. Grease

will flow out of the hub around the spindle.
4.
When the grease appears to be the new clean grease, remove the

grease gun and wipe off any excess grease.
5.
Replace the rubber plug in the cap.
Rubber

Plug

New

Grease In
Old

Grease

Out
In

Out
©2019 Dexter Axle Company | www.dexteraxle.com
-3-
059-Z01-11 2019.09 | 08242

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