TRANSGO SKAOD AOD SHIFT KIT Valve Body Repair Kit Instruction Manual
- June 13, 2024
- TRANSGO
Table of Contents
SK® AOD-H SHIFT KIT®
Corrects/Prevents/Reduces
First time using this product?
Read “A Little Straight Talk”
from Gil on page 6 first.
SKAOD AOD SHIFT KIT Valve Body Repair Kit
1-2 Bump or Slide, 2-3 Bump or Slide-Bump, Rough Down-Shift, 4-3 Cut-Loose or Bind-Up, 4-3-4 Shuttle-Hot, 4th Shudder-Light Throttle, O.D. Band Failure, Excessive Shifting, Late or no 4th, Falls out of 4th, Converter Dampener Breakage, 3rd Shaft Breakage.
WARNING: This isn’t a “do-it-yourself” kit. It is for the experienced, professional trans mechanic and is used for improving performance, durability and reducing complaints. It doesn’t make HARD shifts, nor let you transplant transmission, engine, carbs, or linkage.
Separator Plate
A. 4th Accum (If equipped)
Models with 4th Accum, If your 4th Accum contains a spring, discard it and use
Plain spring provided. No spring originally? Install the New Plain Spring.
It really needs it!
Check 4th Accum Seals for damage.
C. OD Servo
Install washer between piston and cover.
Reminder: It’s real easy to miss the pin when you install the piston. If you
do this, 3rd will be ok but you’ll have neutral instead of 4th.
Before installing the piston: Reach up past the rooster comb with a sharp
screwdriver or ice pick and rotate the band towards the servo to set it
against the anchor pin. NEXT insert a thin screwdriver or ice pick through the
skinny slot, right next to the servo and push the band towards the TOP of the
case & hold it there while you install the piston and cover.
Band clearance: If the cover will not install with the washer in place (band
too tight), remove washer and reassemble servo.
With washer installed, wiggle the band front to back to check clearance. It
must wiggle freely, at least 1/16”. If it’s draggy or won’t wiggle, remove the
piston & grind the tip of the pin 1/32’ and recheck for clearance.
T.V. Adjustment (Rod Type)
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Remove the air cleaner and put it on the BENCH. You’re 1/2 done. Have someone floor the gas pedal (from inside the car) while you bend the THROTTLE cable bracket, until the butterfly ARM bottoms SOLIDLY on it’s stop.
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Turn the adjustment screw “IN” until 13 threads are sticking out the front of the adjuster arm. Approx 7/16″.
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Start the engine with the AIR off, and leave It OFF.
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While the engine Is idling, loosen the adjustment bolt on the arm on the side of the trans with a 13mm socket, one full turn. Push the arm UP (towards the top of the car) gently and tighten the bolt.
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Now go back to the top adjustment and back It off 13 turns.
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Place the selector In the “3” position and cruise at 45 MPH.
Floor the throttle, you will notice you do not have a 3-2 kick- down.
Turn adjustment screw In EXACTLY one turn at time, until you have kick-down at 45 MPH. THEN, turn the screw In 3 more turns and you will be In the middle of the TV adjustment. -
Now road test for shift feel and timing. You can adjust It two turns from here either “IN” or “OUT”, to Improve shift quality.
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Don’t forget the air cleaner when you’re done!
T.V. Adjustment (Cable Type)
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Install a 100psi pressure gauge on the T.V. port located on the passenger side of the transmission towards the middle and just above the pan gasket. There are two taps side by side. Use the one that is recessed inward towards the gear train more.
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Bring the gauge up to the engine bay & tie it up safely so you can drive the car with the gauge left on to make adjustments.
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You need the spacer tool or make your own. Take a 5/16 bolt and grind two flats 180 degrees apart from each other on the threaded end until the total thickness between the flats is .250”.
Using a exhaust cutoff wheel or hack saw, make a slot for the cable that will pass through the center of both flats.
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Locate the crimped end of the bare cable that is sticking out of the plastic. Its in front of where it hooks to the throttle arm. Gently pull on the crimp exposing the bare cable and insert the slotted spacer onto the cable. Effectively it’s holding the cable out .250”. 5. Release the cable lock and adjust the cable until the pressure gauge reads approx 28psi to start. Remove spacer & road test. Range with our kit installed is 24 to 40psi. Don’t go below 24psi! Also, you must have a 3-2 KD at 45mph in the D3 position! To adjust shift points- Lower the TV pressure = Earlier shifts.
HOW ABOUT A LITTLE STRAIGHT TALK?
SHOP OWNER/MANAGER/MECHANIC:
If your goal is a couple upshifts, a passing gear and “OUT THE DOOR”, you are
reading the WRONG paper. If you are wanting your customer and your mechanic to
say “This is the best working transmission I have ever driven”, you are
reading the RIGHT paper. It’s going to take your mechanic at least an extra
45 minutes to read this information and install the parts in this kit and
another 20 minutes to adjust the T.V. and road test. The first few times is
going to take some concentration for LEARNING. After 4 or 5, it’s duck soup.
DON’T throw this kit at your mechanic at 4:30 to try to salvage a loser. It
doesn’t install with a SHOTGUN. It installs with PATIENCE and CARE. DON’T
expect your mechanic to know or do what you don’t. Haven’t you noticed it
doesn’t work that way? If you are his leader, give him the time and psychic
support to learn.
LEARNING is the first attribute of leadership.
SHARING (teaching) is the second. There is more useful HERE, NOW and TODAY
repair information in this kit, than all the manuals available put together.
Go for it, you’ll feel good about it. Let your customer read it too, so he can
appreciate your efforts.
MECHANIC: We know the feeling when the trans comes in with a 1-2 or 2-3 slide
or bump, and when you get everything apart it looks OK. It’s SCARY. We also
know what it’s like to get it back in the car and have a big slide or bump
because of defective calibration or clutch plates.
Most of these complaints are “System Mal-functions” and calibration weaknesses
that this kit corrects. If the system malfunctions are not removed the trans
isn’t fixed. Sorry to say it so bluntly, but every customer deserves to have
his trans fixed. I am against the attitude of getting the car moving again and
guaranteeing the complaints all the way to the wrecking yard.
This trans is a marvel in basic design and efficiency. You will be road
testing the finest working trans in the World today. Don’t expect a hard HOT
ROD type shift. A hard shift with this trans is a malfunction. The 1-2 or 2-3
bump or slide bump you’ve often felt with this trans means the clutches are
slipping all the way thru the accum stroke and then engaging suddenly when the
accum piston bottoms.
In my opinion this is one D_ good trans. The most efficient I’ve ever seen.
Both you and it deserve the superior calibration and quality clutches that
will knock the complaints and failures in the head.
It took over three years of hard research, including many nights and weekends,
to find the real causes of 3rd failure, bang and slide 1-2, 4-3-4-3-4 when hot
and band failure. Am I complaining? Not really, when you make the 123rd road
test and it’s still not fixed you have learned a patience and humility that
overcomes the anger you experienced on the 2nd and 3rd road test.
Everything we have learned, that could be turned into parts, is IN this kit.
This is one tough valve body to work on. It requires concentration, patience
and even humility. So take it easy on yourself. DON’T expect to do the first
or 2nd one in 15 minutes. It will take you longer than that just to read the
instructions. Let me encourage you by saying this, “Whether this is a brand
new car, a fresh overhaul or a 60,000 mile slider, when this kit is installed
you will road test the best one you ever drove. So don’t worry if it takes
awhile. You will be doing more for the trans, customer satisfaction and
durability, then everything else you could do all put together. There is
IMPORTANT repair information on Page 7 that you’ll find helpful.
“Thanks for listening!”
ADDITIONAL REPAIR AND OVERHAUL INFORMATION
COMPLAINT: Goes to neutral Instead of 4th.
CAUSE: Front servo pin not engaging O.D. BAND.
CHECK: Remove the valve body. With thin screw driver reach band thru the
hole in the case close to the servo. If you can move the band front to rear
1/8″ or more pin is not engaged.
SOLUTION: Remove front servo assembly. Reach thru the hole in case
opposite the servo with sharp ice pick and rotate band towards the servo
firmly.
Now push the band against the drum thru the hole next to the servo and install
the piston while holding the band against the drum. Now push the piston by
hand and see if it makes the band tight. HERE IS
THE TRICKY PART : You must hold the band up against the drum thru the
hole next to the servo while you install the cover.
COMMENT: If this complaint is before overhaul: band is broken, burned out
or the lug pin in the case has slipped outward.
COMPLAINT: 2nd gear starts after overhaul.
QUALIFICATION: Binds up or locks up in low.
CAUSE: No clearance in 2nd gear clutch (in back of the front pump). Steel
plates too thick.
SOLUTION: Install thin steels to obtain .020-.070 clearance.
COMPLAINT: Buzz-Sounds like converter noise (79-82).
QUALIFICATION: Noticeable on acceleration in 1st, 2nd, and rev. goes away
in 3rd and 4th (except heavy throttle).
CAUSE: Converter relief valve bouncing.
SOLUTION: Replace short type valve with long stem type. (Part
E2F2-7E217-A).
COMPLAINT: No 3rd or 4th, goes to freewheel.
QUALIFICATION: 1st, 2nd and reverse O.K.
CAUSE: Torsional dampener (in converter) broken, or (rarely) the high
drum splines have broken off.
SOLUTION: Replace converter.
COMPLAINT: No rev or holdback in low.
(After repair)
CAUSE: Rear servo pin not engaged in band. Or the servo cover has bulged
down, allowing the piston to come out of the bore.
COMPLAINT: Leak at bell housing.
QUALIFICATION: Front of converter wet.
CAUSE: Crack at converter pilot.
SOLUTION: TIG or ARC weld.
COMPLAINT: Rattle, squawk, dingle or crunch during 2·3 upshift.
COMMENT: What is actually happening is the 3rd clutch is applying
unevenly. We call it “CHUCKING”. It is not actually caused by anything but
several things contribute to it. They are, wrong oil (“F” type).
Calibration. Some brands of oil (any type). Some brands of clutch plates.
Smooth steel plates.
SOME DON’TS : DON’T use “F” oil. DON’T put glazed steel plates in 3rd
clutch (or any clutch, for that matter).
DO’S: Save the original factory fill oil if it’s still good.
It is super good stuff for correcting and preventing CHUCKING.
SOLUTION: Install Dexron oil. If still CHUCKING, drain down oil and
install 2-3 quarts of Pennzoil “Hydra-Trans and Wet Brake Fluid” or one bottle
of GM “Limited Slip” additive #1052358.
QUESTIONS AND ANSWERS :
QUESTION: Are there any shortcuts, like fixing a used car with a big
bump?
ANSWER: Yes, but No. You can fix a slide bumper with this whole kit. The
shortcut is, you don’t have to overhaul it if it was still holding in all
gears. It will work better than new.
QUESTION: What is the big snap-ring I can never find a place for?
ANSWER: Ford assembled trans standing up on the back end. The snap ring
was installed deep in the case to hold the rear band in position while the
servo was installed. You don’t need the snap ring.
CUSTOMIZING SHIFT QUALITY
Listen Up -Never attempt to correct how a shift feels unless the shift
timing is OK at all throttle openings.
You’ll just be wasting your time and will be irked at us when the recommended
change doesn’t fix the complaint. Pressure rise must be working correctly,
causing the shifts to get later or earlier according to throttle opening.
Fastest check is attaching a pressure gauge to the fwd outlet on the passenger
side. In “D”, just above idle pressure must be 72-84 lbs. Approx 1/4 throttle,
must be 115-140 lbs. At stall 205-245 lbs.
If pressure rise is OK and there are no leaks to the friction units the
variation in shift quality is always parts matching, calibration, or
variations in the holding power of the friction materials.
WARNING: Do not make these changes to Trans’s that do not have this kit
Installed.
1-2 SHIFT
NO 1-2 SHIFT : Seal installed wrong on Accum plug. Capacity valve stuck
inboard. Intermediate roller clutch not holding. Case blown out.
HAS: Abrupt 1-2. Rattles dash, 1/4 to 5/8 throttle.
CAUSES: 1-2 capacity valve stuck outwards. Spring not in pocket. Spring
on wrong end. 1-2 accum valve stuck; usually from over-tightening.
HAS: 1-2 WAY too short and sharp up to 1/2 throttle. Better at 5/8
throttle and OK at 3/4
CAUSE: Mismatch parts. Wrong capacity spring. Fluidics not working.
Didn’t install SK® Kit !
HAS: 1-2 too sharp at light to 3/8 throttle. OK at 1/2 throttle or more.
FIX: Change capacity spring.
HAS: 1-2 just a little firmer than you like.
FIX: Change capacity spring.
HAS: Soft 1-2, or slide bump 1-2.
QUALIFICATION: Gets OK with heavy throttle.
FIX: Change capacity spring.
HAS: OK 1-2 at light to medium throttle, but has slide or slide-bump at
heavy throttle.
If gauge indicates pressure rise is working, and you have changed capacity
spring for shorter shift, fire up your impact; it has bad clutches.
2-3 SHIFT
HAS: 2-3 slide bump or slide bump up to 3/8 throttle and still too long
at 3/4 throttle.
FIX: Install capacity spring for shorter shift.
NONE-YELLOW-GREEN-RED → SHORTER
HAS: 2-3 too short or firm with NO SLIDE.
FIX: Install capacity spring for longer shift.
3-4 SHIFT
For a shorter 3-4 shift, all over, install “B” size servo and cover.
(EOAZ7F200B & EOAZ7D027D)
HAS: Light throttle 3-4 flare.
FIX: Make hole “F” .010 smaller.
4-3 SHIFT
HAS: Engine flare during 55MPH downshift.
FIX: Make “F” hole .100-.112
HAS: Bang/bind during 55MPH 4-3 downshift.
FIX: Make “F” hole .010 smaller.
Need some help? Call 626-443-7451
Performance Products for the AOD Transmission!
TRANSGO PART # : AOD-HP Reprogramming Kit
Fits Ford and Lincoln Mercury AOD 1980-1993
Includes (4) governor valves for max throttle shift tuning; new boost valve
with springs for tuning high performance engine applications and our patented
High Temperature rings for forward clutch. Includes pan gasket and both valve
body separator plate gaskets as well as other parts and procedures for shift
feel calibration.
Short, Firm Shifts with Performance, Durability and “CLASS”. Tunable wide open
throttle shifts from 5500 – 6800 RPM.
This Kit does not provide a wide-open throttle up-shift to 4th. Trans will
have full automatic operation in OD or D position.
TRANSGO PART # : AOD-HPSHAFT-KIT
FITS: Ford/Lincoln Mercury AOD 80-93
FEATURES: Run a C6 Converter in an AOD!
New Hardened Input Shaft works with Cast iron or stamped steel drum.
Open Converter performance, No more lugging in 3rd and 4th or coast down chug.
Great for street rods and transplants. Works with custom high stall or stock
C6 converter.
SMART ACT™1-2 SYSTEM—The four stage system that “THINKS”
To assure a high quality gear change for the life of the vehicle, the
effective
range of 1-2 accm/capacity system is 5 times as broad as original design.
QUICK/CHANGE AND CUSTOMIZING 1-2 SHIFT
SYSTEM CORRECTION TECHNOLOGY AND ETHICS.
Today’s Transmissions: About 15% come in with broken parts. Another 15% arrive
because they ran out of fluid. The other 70% arrive because of SYSTEM
MALFUNCTIONS.
The ones that came in with broken parts or ran out of fluid also have system
malfunctions.
Wasted time and profit-during the repair and back from the customer: Except
for converter complaints, 98% of the time spent trying to get them good enough
to deliver, and over 95% of the complaint/failures back from the customer is
caused by system malfunctions.
Selling a repair without correcting the system malfunctions is the same as
putting air in flat tire and leaving the nail in it. It is simply NOT FIXED.
ARE YOU STILL TRYING TO KID THE GUY YOU SHAVE? If you are performing a
“REBUILD, RECONDITION OR OVERHAUL”, the customer understands those words to
include removing the malfunctions that cause short life, complaints and
failure. In short, those words let the customer believe it includes fixing
the trans. If you’re not removing the system malfunctions, your are deceiving
yourself and the customer. You’re not fixing the trans. System Correction is
not something you learn in five minutes. It’s not just some parts that you
throw in. It includes making some correct decisions from a lot of repair data
while you are doing the job. It will take you a while to learn the whole
thing, on each late model trans. But, once you learn and apply it, you will
know they are FIXED. The guys who learn and apply this technology are going to
take over the trans business in the next few years. The guys that don’t learn
it are going to be out of ethics, out of tech, working too long for too
little, and be in serious consumer trouble too.
System Correction starts with the parts, data, and repair info that’s in the
SHIFT KIT®.
SK® AOD; AOD-PSK; AOD-HP
Listen up: If trans has aluminum 3rd Accm Piston don’t use seal furnished in
the kit.
Install new seal on plastic piston.
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