TRANSGO SK6T70 repair kit corrects malfunctions that lead to broken parts in your transmission. It includes pressure switch repair parts, a pressure regulator and actuator feed system, and rubber grommets. It adds over-boost protection, improves TCC stability, and saves a TEHCM with blown-out pressure switches setting pressure switch codes.
TRANSGO SK6T70 repair kit corrects malfunctions that lead to broken parts in your transmission. It includes pressure switch repair parts, a pressure regulator and actuator feed system, and rubber grommets. It adds over-boost protection, improves TCC stability, and saves a TEHCM with blown-out pressure switches setting pressure switch codes.
®
SK 6T70-A Fits: 2007up Gen 1
©TransGo 2019
TEHCM
(Front View) TEHCM &
Pressure Switch
Assy.
(Rear View)
Pressure
Switch
Locaons
Rubber
Grommet
Broken
Diaphragm
Diaphragm & Grommet Removed
Switch
Contactor
Page 1
Watch out for blown
Pressure Switches!
See pages 7 & 8
Corrects/Prevents/Reduces
Pressure Regulator & Actuator Feed System
Malfuncons that lead to broken parts.
Installs with No Special Tools Required!
Adds over boost protecon, improves TCC stability.
“It Just Ain’t Fixed Without It”
This product does not t Gen 2 models.
(Models without pressure switches.)
Includes
Pressure Switch
Repair Parts!
Save’s a TEHCM with blown
out pressure switches seng
Pressure Switch Codes!
12/12/2019
Manual
Blue
.250
Ball
Relief Bushing
= 9 Check balls
Discard Original PR Valve & Spring
Step 3
Remove & discard original Pressure Regulator valve & spring.
Install New Pressure Regulator Valve, New Red Spring, original end plug & retainer.
Re-use
Main Body Repairs (Front Side)
Type 1
Discard the Original Isolator Valve
Type 2
Step 2
Remove & discard original Isolator retainer, plug, valve & spring. Assemble New Relief
Bushing by inserng New .250 ball rst, then New Blue spring into relief bushing.
Now insert relief assembly into VB Isolator bore.
Insert bushing far enough to install new spring retainer into outer groove of bushing.
Trans is now protected from over-boost cross leaks! Protects expensive hard parts!
Step 1 STOP! LOOK! IDENTIFY!
If your valve body has a casng step, re-use your original spring and original retainer.
Make sure the spring is not bent or crooked when installed.
If your valve body DOES NOT have a casng step, USE the new NEW WHITE TCC
Control Valve spring and NEW RETAINER. (Spring sits in retainer recess.)
VB with
Casng Step
Make sure spring is straight.
Re-use ORIGINAL retainer and spring
IF Valve Body has a Casng Step!
TCC Control Valve
New
Retainer
New
Retainer
VB without
Casng Step
Retainer Recess
New
White
Pressure Regulator
Red
©TransGo 2019
Page 2
12/12/2019
Manual
= 9 Check balls
Main Body Repairs Connued (Front Side)
Orange
New Scarf Ring
Original
Shi Slug
TCC Regulator
Original
Retainer
Discard Original Valve & Spring
Step 1
Discard original TCC Regulator Valve and spring. Clean the New TCC Regulator
Valve provided and test t it into the clean VB bore. If it moves freely, remove it
and put a small dab of assembly gel into the groove of the new valve followed by
the NEW Scarf Cut Ring. Now roll the small o-ring provided on top of the scarf cut
ring and place it in the freezer for 15 minutes. This will “size” the ring into the
groove. Note: The o-ring is only used as a sizing tool.
To install, roll the o-ring o the valve and set it aside. Insert the NEW Orange Spring
into the hollow end of the new valve and insert new valve and spring into the bore
while it’s sll cold, followed by the original Shi Slug, End Plug & Retainer.
It will go right in if the outer diameter of the ring is ush with the new valve.
Never force the valve in. Once you install the valve and ring– DO NOT REMOVE IT!
Original
End Plug
©TransGo 2019
Page 3
12/12/2019
3-5 Rev Clutch
Boost
4-5-6 Clutch Accum
456
Clutch Boost
1234 Clutch Reg
1234 Clutch
Boost
Rear Body Repair
Discard Actuator
Feed Limit Parts
Step 1
Discard original Actuator Feed Limit parts and
install NEW Bushing, Valve, Yellow Spring,
Spacer and Retainer provided.
Shule
Bushing Valve Yellow Spacer New
Retainer
©TransGo 2019
Page 4
12/12/2019
Separator Plate (No Changes)
Channel Casng
to
Main Valve Body
Separator Plate
Main Valve Body
to
Rear Valve Body
Separator Plate
Gaskets are bonded to the Plates
from the factory.
Re-use is ok in a pinch if they are
NOT damaged.
New plate/gaskets is always a
beer choice.
©TransGo 2019
Page 5
12/12/2019
Re-use 3 original
Pulse Dampers
Valve rst then spring!
We have seen a couple of these casngs
worn in the damper holes. Always look
carefully.
Front Channel Casng (Rear Side)
Rear Side
Facing Main
Separator Plate
Front Steel Cover
Plate (Rear Side)
w/Bonded Gasket
Fixing the cause of the
complaints is our goal.
Making products to help
you be more successful is
the result of listening.
Let us hear from you!
Coming Soon 6T-PDP-TK
Repairs Worn Dampener bores
6T40 & 6T70
©TransGo 2019
Page 6
12/12/2019
Rubber
Grommet
Broken
Diaphragm
Diaphragm & Grommet Removed
Switch
Contactor
Rotate
gently unl notches
engage the 3 Tabs.
Pressure Switch Repair:
Oen this trans experiences a drum or clutch piston failure oen due to a
Pressure malfuncon. Typically, at least 2 of the 4 pressure switches in the
assembly will also be blown out as shown below. Your choice is to repair
the TEHCM with this kit or replace it with a new TEHCM from the dealer &
have it programmed. $$$!
We have provided the parts you need to repair the pressure switches. It
does take a bit of talent but mostly PATIENCE to get it done. Many techs
have performed this task with great success but it’s your choice. You need
only repair the switches that are damaged.
Remove & ID the
old parts.
5 of each
provided. Using a at washer and a rubber p blow gun,
place the at washer over the rubber grommet
and insert the blow gun p into the center of
the washer. Air check each switch that is not
visibly damaged and make sure they hold air.
If they do, leave them alone!
If they don’t hold air, or you see they are visibly
damaged, remove the rubber grommet, the
damaged diaphragm and insure the switch
contactor is in place. Pushing on the switch
contactor, you should feel a noceable click as
you release pressure o the contactor.
Take one of the new diaphragms, gently
pinch the diaphragm into the shape of an upside
down taco shell. Insert it as shown below into
the switch hole making sure you guide it under
the lip of the plasc. Using a small at-blade
screwdriver, work the rest of the diaphragm in-
to the hole unl it lays at on the switch
contactor. You may use a pencil eraser to move
it le or right ll it drops in place.
Connue on next page.
Testing switches:
Pinching Diaphragm
for installation.
Pinched Diaphragm
inserted into switch
cavity and started
under plasc frame.
Grommet Installed
1 Extra for
Pracce!
©TransGo 2019
Page 7
12/12/2019
Final Tesng
Installing the grommet is done by paently coaxing it into
posion. You must get the outer lip of the grommet to go
under the plasc housing. This is what seals the switch.
Lube the grommet & diaphragm with 90w gear oil or something
equally as slippery. Treat this just like you would a small child..
with paence! The rst one is always about geng the knack of
doing it. Be successful and you’ll be pung cash in your pocket
for each TEHCM you didn’t have to buy new & then program.
Using a at washer on the rubber p of a good blow-gun, make
sure the switch does not leak. It should seal ght.
Do the air test with 30 psi. If it holds, it’s ok. It will be too hard
to hold the blow gun in place to use full shop air.
Final test: Use a pencil eraser to gently push into the center of
the switch to feel the switch click as you let up on it. Use one of
the other switches to compare.
The new grommets will be taller than old ones. It’s OK!
Rubber Grommet Installaon
Outer Lip
Use the small screwdriver to push behind the outer lip
(from the inside) to wedge it under the plasc.
Pinch the Grommet to start the outer lip under the plasc.
Work the outer lip under plasc with a small screwdriver.
A Small Flat Blade
screwdriver works best
for doing this!
©TransGo 2019
Page 8
12/12/2019
You may have to pull the top of the grommet back slightly to
make sure the lip is going under the plasc.
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TRANSGO SK6T70 repair kit corrects malfunctions that lead to broken parts in your transmission. It includes pressure switch repair parts, a pressure regulator and actuator feed system, and rubber grommets. It adds over-boost protection, improves TCC stability, and saves a TEHCM with blown-out pressure switches setting pressure switch codes.
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