Repair cvt VT25-E/VT20-E, Saturn, Opel.
Demonstrated inside the repair of variator VT25-E/VT20-E (continuous
variable transmission: CVT), mounted on car Saturn Vue 2,2l 2002-2005 and
Ion Quad Coupe 2,2l 2003-2004. Also installed on the car Opel Signum
2004-2007 and the Opel Vectra C 2004-2007.
Ремонт вариатора VT25-E/VT20-E. Saturn Vue, OPEL.
AW55-51SN / RE5F22A Transmission Teardown Inspection - Transmission Repair
This is a transmission of a 2005 Nissan Maxima. On this video you will see
the common problem that are associated with this unit. Although there is
rumors out there that a simple valve body swap or new solenoids or even a
shift kit will cure your problem, here we see the opposite. I know that 50%
of your shifting issues can be solenoid and valve body related, but some
drivers push their cars to the limit causing severe damage as you can see
Transmissions: Pros and Cons of Rebuilding Continuously Variable Transmissions
Supported by Transtar and TransTec and produced by Motor Age in partnership
with ATSG, this training program explores the various CVT configurations,
their operation, parts and tool availability to help you determine which
repairs can and cannot be made in your shop. Best of all, this program will
provide basic tips for the average transmission specialist to determine if
the shop can rebuild that CVT profitably or if the transmission will need
to be replaced. Click this link to subscribe to Motor Age!
Honda Transmission Repair
Here at Transmissions Unlimited we specialize in the diagnosis and repair
of Honda Transmissions. Whatever the issue may be please be sure that we
can take care of you. So if you are in nned of transmission repair please
dial the number above or visit our website. We're pleased to serving you in
the near future.
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bellow. Thank You.
CVT Transmission Belt to Pulley Clamping
CVT Belt to Pulley Clamping
Get the book here:
The key to understanding how a CVT works, is by reviewing how the chain and
cone pulley react with each other. All CVTs have one weak spot, the contact
point. This is where there is a tendency for the whole transmission to
slip, grind and sustain damage. Incredibly enough, this is not where CVTs
fail the most, but more on that later.
The CVT belt is composed of two groups of metal rings, each of 7 to 12
rings, and a few hundred special metal links. It is these links the ones
with direct contact with the cone pulleys, or variators as they're called
by the manufacturer. For good clamping force, the CVT needs a specific
transmission fluid. To neglect this fact is to ask for trouble, as the CVT
will get damaged due to slipping and grinding between the belt links and
There's also another aspect of the CVT clamping force that needs to be
reviewed, which is the hydraulic pressure exerted on the cone pulleys or
variator. The CVT oil or hydraulic pump can generate as much as 1000 PSI of
pressure. but not everything in the CVT needs this much pressure. Because
800 or more PSI is more than most circuits need, line pressure is regulated
down to three lower levels, 220 PSI maximum for the clutches and variator,
140 PSI for the TCC, or torque converter, and 80 PSI for the lube and
cooler circuits. The CVT also has a few ... Get the whole story right here
in this video... Enjoy...
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Amazon Video DVDs:
Honda Transmission Repair 2
On this video we see the necessary parts needed for a successful rebuild on
these Honda units. The main issue is the converter lacking lubrication and
burning up. There is a new valve from sonnax to correct this issue. As well
as the "O"ring end plugs and TC check valve.
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Thanks for watching.
The driving shaft VT25-E/VT20-E. wmv
The driving shaft. Piston forward is one of the weaknesses in the variator
(CVT). Major failures because of it. Rubber deposited by curing on a metal
part of the piston - hardens and loses elasticity. Height (thick-ness on) a
rubber bumper is only 5 mm, and height of the cylinder in the fixed part of
the cone leading shaft is also small. During compression clutch forward,
the piston is so out of the cylinder, which creates oil leak on the outer
circumference of the piston. Reduced contact area between the piston and
cylinder. Falling oil pressure ball valve on the piston does not have time
to close. Piston periodically presses, the press clutches. And as a result
1. Twitching of the time away.
2. Wear of the friction, they simply burn out. Increased clearances and
there is a metal ring.
3. Of clutch friction material are particles that fall into the oil block
of solenoid and a valve, which causes them to malfunction - jamming valve
4. Wear surface of the cones.
5. Wear metallic belt.
6. Crushing balls in the slots.
7. Chips in the slots themselves driving and driven shafts.
8. As a result - jamming mobile cones.
9. And later breakage of the metal belt.
10. In the torque converter divides the overrunning clutch.
AW55 Series Transmission
We specialize in the diagnosis and repair of these transmission series no
matter in what vehicle are they in.
Honda Civic Transmission, BMXA, Teardown Inspection
Honda BMXA Transmission.
This is a transmission of a Honda civic BMXA. Here we see the most common
issues I see with these units. The most common being a restricted filter.
Had some camera issues, hope you don't mind. A clip came out black and
AGCO's Continuously Variable Transmission (CVT) Explained
AGCO was the first company to introduce the Continuously Variable
Transmission (CVT) for agricultural products. It is the only true step-less
transmission in the agricultural market today. While the CVT is superior in
efficiently transferring power to the ground, the largest benefit is
realized when operators can throttle-down and speed-up offering
market-leading production and fuel efficiencies.
Honda Transmission Rebuild Video - Transmission Repair
Honda Transmission Rebuild Video - Transmission Repair
On this video we see what it takes to Rebuild a Honda Transmission, what
parts it takes and what has been working to correct some of the common
failures on these transmissions.
Blue Overheated Torque Converters has been a common issue on these
Transmissions for a long time and we still see this regularly to this day.
Although there are various shift correction kits and special valves out
there, all work really good on correcting the issue with the lack of
converter feed fluid. I like them all. So if a deciding factor is important
to you on which method to use, all I can say is this, They all work.
Keep in mind that there are "other" fixes or items that can be added to the
rebuild, but it is not really necessary if they're not really needed, I'm
not mentioning any but I know some of you will.
With that being said I like to thank you for watching this video and liking
it and sharing it.
Thank you guys for your support.
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Saturn transmission failure. Not CVT :)
35K miles on eleven year old Saturn. Harsh reverse and or slips into 2nd
gear can be a Loose nut, easy fix.
If you have a CTV failure, I would change it over to the regular
transmission if you want to keep the car. Just takes some new mounts and a
different computer and some other things.
Driven shaft VT25-E/VT20-E.wmv
Slave movable cone (pulley) with bearings (only have nine balls) is based
on the output shaft of the variator (CVT). Drive shaft consists of movable
and fixed cone. Progress is also movable cone is 22 mm.
Push force necessary to create friction between the metal belt and
pulley cone shaped push-plates and a spring in the control cavities moving
Unfortunately movable cone seals can not be replaced, as outer "cup"
seamed, so it is detachable. Of course, if you have too much you can try
the shaft on a lathe to cut the outer "cup" through the rolling and open.
Then after replacing the seals brew.