TRANSGO 4R70W SK AODE Shift Kit Instruction Manual
- June 3, 2024
- TRANSGO
Table of Contents
TRANSGO 4R70W SK AODE Shift Kit
Upgrade Explanation
Main complaint with this trans is not shift quality. It’s friction durability and internal parts breakage. This kit focuses on cush-ioning the engine run-up that whacks against the driveline, shafts & sprags during kick down and high throttle up shifts. During road test: Notice a 55 to 70 mph 4-2 KD is now a 4-3-2 KD, and completes before the engine and converter have time for a runaway that BREAKS the 2nd roller, diode, and/or shafts. 4th Band Failure: Kit fixes forward clutch oil loss that burns band and forward clutch. 2nd Roller Failure: A high or low pressure run away during 4-2 kickdown, allows engine and converter to have up to a 4000 RPM free run at 2nd roller which crashes 2nd roller or mid-shaft. Installing this kit fixes both high and low pressure causes. And much more.
While trans is apart
Installing Special Rings reduces band and forward clutch failure. This will help prevent a kick-down run away BANG breaking 2nd roller, diode or mid- shaft.
Supplied rings fit 1991 to 2003 models. If equipped with factory plastic type rings (2004 up), reuse original rings. Late stator has narrower ring grooves.
Additional Information
- Pull dip stick and wipe it clean.
- Run engine in “P” at twice idle speed [12-1500 RPM] while you count to ten.
- Turn off engine and quickly stab stick. Fluid level should be at top of full mark when cold and no more than 1/4″ above cross hatch hot.
Always replace OD servo piston with same size. Installing larger servo where small was used can cause clunk/clank 4-3 or 3-4.
- Step 2: Discard the thimble filter. Two sizes Tapered Orifice are furnished. Using a VB bolt or punch install one that fits tight into the hole.
- Step 3: If point of 3rd retainer directly touches VB separator plate, install New Spacer. Use assembly gel to “stick” it to the retainer.
Step 1
Drill hole 2X .194 to .203 [13/64″, #10, 9 or 8 drill]. By hand use 5/16″ or bigger drill chamfer both sides of plate. Place plate on hard surface. Insert Orifice Plug in hole. Hit plug with light hammer. File flush. Re-drill hole with .055 drill furnished.
Step 2
Plate Hole Sizes ID Plate First: Do you have hole 4 in your plate? Yes or No?
If Yes: Drill Hole 2: Passenger = .067 Listen up! Models without a bolt-down
plate here, can develop a small crack in the separator plate in shaded area
below. Our new spacer fits pointed end of 3rd accumulator retainer & makes it
ok to re-use the plate.
Overdrive Regulator Valve
T ype1: No Reuse original Spring.
Type 2: Install new 4th Bushing, the original valve & original spring.
EPC Relief Valve
Corrects uncontrolled line pressure due to electrical malfunction, stuck EPC valve, or cross leaks. Reduces the accidental neutral condition [Run-Away] and brutal 2nd clutch re-apply that breaks 2nd roller or mid shaft.
Step 1 Remove Thick Bottom Plate.
Drill two .125″ [1/8″] holes thru this partition from right to left under
“X’s”. Do not allow the side of the drill to contact any partitions!
Step 2 Remove Thick Bottom Plate.
Install PURPLE spring on valve. Push stem end of Valve thru hole in
Bracket. Install paper clip in the stem hole. Install onto valve body. REMOVE
PAPER CLIP.
Read This: A main goal of this kit is to reduce and cushion sudden
inertial and torque loads against driveline and internal parts during kick-
downs and up shifts. Sudden loads distort internal parts causing them to come
apart, break or wear quickly. Kick-downs will be different to reduce engine
and converter run-up against sprags.
POLICE/TAXI: During jack rabbit stops and starts, start off will be 2nd,
not 1st, for about one turn of the wheels. This takes the fast throttle
“WHACK” off the driveline and reduces the 3-1 KD engine run-up and whack
against the low roller.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>