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A6MF1/2/3 and A6LF1/2 Rebuild
Kia and Hyundai
6 Speed Front Wheel Drive
Presented by: Jarad Warren
Vehicle Application Guide
Hyundai
Accent 2012-17 / 1.6L / A6GF1
Azera 2011-17 / 3.3L / A6LF1
Azera 2011-13 / 3.3L / 3.8L / A6LF2 / A6LF3
Elantra 2012-16 / 1.8L / A6MF1
Elantra 2015-17 / 2.0L / A6LF1
Santa Fe 2010-17 / 2.4L / 3.5L / A6MF2 / A6LF3
Santa Fe 2013-17 / 2.0L / A6MF1 / A6LF2
Sonata 2010-17 / 2.0L / 2.4L /A6LF1
Sonata 2010-15 / 2.4L / A6MF2
Sonata Hybrid 2016-17 / 2.0 (Plug In) / A6MF2H
Tucson 2010-15 / 2.4L / A6MF2
Tucson 2010-17 / 2.0L / A6LF1
Veloster 2012-17 / 1.6L (Turbo) / A6GF1
Vehicle Application Guide
Kia
Cadenza 2014-17 / 3.3L / 3.8L / A6LF2
Forte 2011-17 / 2.0L / A6MF1
Forte 2011-13 / 2.4L / A6MF1
Forte 2014-16 / 1.8L / A6MF1
Forte 2014-17 / 1.6L / A6GF1
Optima 2011-17 / 2.0L / 2.4L / A6MF1
Optima (Hybrid) 2013-14 / 2.4L / A6MF2H
Rio / Rio 5 / 2012-17 / 1.6L / A6GF1
Sedona 2010-14 / 3.5L / A6MF2
Sedona 2015-17 / 3.3L / A6LF2
Sorento 2010-17 / 2.4L / A6MF1
Sorento 2010-17 / 3.3L / 3.5L / A6MF2
Sorento 2016-17 / 2.0L / A6LF2
Soul 2012-17 / 1.6L / A6GF1
Soul 2012-17 / 2.0L / A6MF1
Sportage 2010-17 / 2.4L A6MF1 / A6MF2 /A6MF2-2
Sportage 2012-17 / 2.0L / A6LF1 /A6LF2
Clutch Apply Chart
We did an introduction webinar for the A6MF1 in February 2018. The webinar is on the website and has
some great info. We talked about components locations, sensor operation, solenoid function and more.
Clutch Brake
Gear OWC
OD 3-5-R LR UD 2-6
P ●
R ● ●
N ●
1 ○ ● ●
2 ● ●
3 ● ●
D
4 ● ●
5 ● ●
6 ● ●
L ● ●
● : Active
Note
○ : Active at speeds above 8 km/h and off at 6 km/h
Valve Body Removal
Valve body bolts
torque 7.2-8.7 lb-ft
After removing the valve body
cover, you will first take out
the bolts labeled “A”. Unplug
harness from solenoids and
The Temperature
move it out of the way. Next
Sensor on the old style
remove bolts labeled “B” and
harness disconnects
this will allow you to remove
from harness. The
the valve body.
updated harness has
the temperature
sensor that is part of
the harness. We
recommend to always
update the harness.
Case Passages
Air test should be done
with around 35 PSI.
To Cooler
From Cooler
From Damper
To Damper UD
Rear Lube
Front Lube L/R
OD
3-5-Rev Reducing 2
2-6 Brake Reducing 1
ISS
Pump Out
OSS
Pump In
Valve Body Inner Section
Stamped A6MF1
Inner
Inner Valve Body
Valve Body Middle Section
The Reducing valve bores loves to wear
out, even with low miles.
Transgo has a new kit out for the
A6MF/LF series.
Sonnax also has their tools and valves.
Valve Body Middle Section
Valve Body Outside Section
On this valve body there are some adjusters
on the regulator and reducing valve. You do
not want to change the adjustments.
There are also four adjustments for clutch
control, they are label with the white and
black circles.
All the linear solenoid resistances is 5.1 Ohms.
The on/off solenoid resistance is 10-11 Ohms.
The Reducing valve bores loves to wear out,
even with low miles.
Transgo has a new kit out for the A6MF/LF
series.
Sonnax also has their tools and valves.
Rear Cover / OD Drum Rear end play .009”-.017”
I like to air check the unit when taking the transmission
apart. Air check the OD drum on the rear cover.
The cover has a bearing race and back of OD drum takes a
thrust bearing. Also check for ring grooves.
Snap ring is selective. Overdrive Clutch Drum
Clearance .049-.061”
Has a molded balance piston.
Snap Ring .090”
Pressure Plate .113” Spring Retainer
Five .064” Clutches
Four .082 Steels
Piston
Apply Plate .090”
5 clutches, 5 steels
Two seals
Measured clutch clearance .052”
A6MF1 Overdrive Snap Ring Part Numbers
Overdrive clutch clearance .049”- .061”
One Way Clutch Rotation
There are four seals under the rear cover. Remove the snap ring (.098”). The opening of the snap
ring is at 1 o-clock position. Pull the gear train and one way roller assembly out.
Hold
Freewheels
Freewheels Locks
3 Large seals .400” Tall .460” Wide
1 Small seal .410” Tall .315” Wide
Gear Train
Labeled FRONT
As pictured here, the “front” would
be facing down.
Squeeze the snap ring together and at the
same time pull the one-way assembly up and
off the planet.
Gear Train
3 Tab Washer
(Selective)
Snap ring
.098”
Remove outer snap ring to get gear
train apart.
Gear Train End Play
End play .003”-.015”
Gear Train
Remove the snap ring then pull ring
gear up and off. Inspect the planet teeth and the
bearings for wear. Inspect the
thrust washer.
Gear Train
Bearing on
ring gear
3 tab washer
Lip to gear Lip to gear
Sun Gear Sun Gear Planet Ring Gear
Low Reverse Brake
Snap Ring .098”
Low & Reverse Clutch
Selective Pressure
Clearance .080”-.092” Plate .176”
5 Clutches .068”
5 Steels .045”
Cushion .062”
Apply Plate .129”
Snap Ring .084”
Spring Cage
Piston
Low & Reverse Clearance
They want you to load clutch with 2532 lbs. of pressure
and measure clutch. That is not going to happen most
likely. I would measure clearance without the cushion
plate. Then measure thickness of cushion plate and
subtract that from your clearance.
Measured clearance without the
cushion plate was .154”.
.144”-.062”= .082” clearance.
Remove The Front Case Half
Remove the case half bolts, than pry the front case half off.
Case bolt torque 20-22 ft./lbs. Differential and Case Seals
.410” Tall .315” Wide
Two seals inside spider .400” Tall .460” Wide
gears shafts.
Pump
Filter bolt torque 7.2-8.7lb/ft.
3 tab washer on pump. Check seal rings.
Pump
Cut out for
tab on piston
Check front bushing
Check pump surface
3-5-Rev 2-6 Brake
Pump to case torque 14.5-18.1lb/ft.
Pump
Snap Ring .060”
Pump gears have ID marks on Ring .062”
them. Marks face up.
Waved spring
Piston
Tab on piston
goes in the
slot.
2-6 Brake
Remove the waved cushion 1st! Set up the H-gauge Cushion .065”
to check 2-6 brake clearance.
Measure
Clearance .132”
Minus .065”
Clutch clearance
.067”
Measured clearance minus cushion= clutch clearance
.132”-.065”= .067 was the clutch clearance on this unit.
2-6 Brake cont.
Cushion .065”
Apply Plate .096”
4 Clutches .070”
3 Steels .156”
Pressure Plate .100”
Selective
Step down
3-5-Rev Drum
Snap Ring .086”
Apply Plate .094”
Measured
clearance
5 External Teeth .118”
.040”
5 Internal Teeth .090”
Snap Ring .050”
Balance Piston
Return Spring Fingers Up
Piston
Hubs and Washers
2 Tab
Thrust Thrust Bearing 3-5-Rev Drum
Washer
Underdrive 2-6 Clutch & 3-5-R Hub
Clutch Hub
UD Clearance .025”-.037” Underdrive Clutch Measured clearance .030”
Snap Ring .082”
Selective
Pressure Plate .098”
3 Clutches .065”
3 Steels .078”
Retainer Snap Ring .058”
Spring Retainer
Piston
Piston Housing
Note: Issues with rough surface
causing seal to wear.
UD Housing bolt torque 3.6-7.2 LB/ft.
Transfer Gear
Housing bolts and Transfer Gear bolts
torque 22-26 ft./lbs.
Transfer Gear Disassembly
Kia part number for nut removal tool
A6MF1 09457-26300
A6MF2 09453-3L220
I found online for $65-$85. This tool
would make the job easier.
I did not have the tool and heated the nut
up and knocked it loose with a hammer
and punch.
I marked the nut position before I took it
apart and reinstalled in the same place
after checking bearings and races.
Note there are no shims to set preload.
Transfer Gear and Park Pawl
Differential
Spider Gear Seals
There is an O-ring on this side of Inside the diff on the spider
the spider gear to keep dirt and gear has a cup plug to keep
water from entering splines. It ATF inside the transmission.
would be a good idea to apply
spline grease to axle splines.
A6MF1 Specifications
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