How to remove a gearbox

We remove and install the VAZ-2107 gearbox ourselves

The gearbox is one of the most important components of a car, the smooth operation of which determines the durability and reliability of the car. If it becomes necessary to remove the gearbox to replace it or carry out repair work, you should be sure that in this case it is impossible to do without dismantling the gearbox, since removing the gearbox is a rather complex and time-consuming process, especially if it is performed for the first time. Replacing or repairing a gearbox at a service station is an expensive undertaking, so many owners of VAZ-2107 cars prefer to carry out this work themselves. What should a car owner know who will remove the G7 gearbox for the first time without outside help?

Features of automatic transmission dismantling and installation | General Tips

We carry out all work in places equipped with a lift or inspection pit. To avoid damage to the unit, you must use a transmission jack or other similar tool.

Removing the gearbox

• disconnect all pipes, rods, connectors, lines from the unit. Draining the oil is not necessary, but is recommended to make your job easier. to put the automatic transmission back. When disconnecting the pipes, if the transmission fluid has not been drained, you need to install plugs;

• unscrew the bolts securing the hydrodynamic transformer (HDT) to remove it complete with the box. This operation can be quite painstaking, since the mounting schemes differ for different car brands. But the operation must be performed. Removing the automatic transmission body without a gas turbine engine can lead to damage to the splines of the input shaft and you will have to puzzle over how to put the gearbox back;

• check again whether the unit is freed from all connections, connections, connections. And only after that you can remove the automatic transmission. During the process, you need to hold the gas turbine engine so that it does not jump off the shaft spline.

Removal and installation of automatic transmission Video

Gearbox installation

So, the box has been serviced, the problems have been fixed, everything has been cleaned and washed. Installation of the automatic transmission is carried out in reverse order, observing the sequence.

• Lubricate the centering sleeve, check that all rings are in their proper places. Both on the box and on the engine block. Make sure that the gas turbine engine is assembled with the automatic transmission.

• Check that there are two pins on the crankcase mounting flange. Installing a gearbox without one is prohibited!

• Thoroughly clean and rinse all internal cavities of the unit, making sure that no foreign objects or particles remain after repairs.

the gearbox is being installed slowly . We tighten all the fastening bolts, pipes, lines, attach the rods and connectors. It is important here not to confuse one with the other, to follow the markings. Don't forget about the torque converter.

When it may be necessary to dismantle the VAZ-2107 gearbox

Dismantling the VAZ-2107 gearbox may be necessary if necessary:

replace or repair the clutch;
replace the crankshaft and gearbox input shaft seals;
replace or repair the gearbox itself.

In the case of replacing the clutch, you don’t have to remove the box completely, but only move it to the side so that the gearbox input shaft comes out of the clutch basket, but access to the clutch parts in this case will be limited. Complete dismantling of the gearbox allows in this case to carry out a visual inspection of components such as the clutch housing, as well as the oil seals of the gearbox input shaft and crankshaft, and, if necessary, replace them.

Signs that the gearbox itself needs to be repaired or replaced may include oil leaks, extraneous noises, wheels locking when driving, etc. When the first symptoms appear, you should not delay repairs in order to prevent the gearbox from failing.

Basic faults

The gearbox used on the Kopeyka is structurally a fairly reliable unit, capable of handling a significant resource without any special intervention. But still there are problems with the gearbox.

The main problems with this unit are:

Increased operating noise. This happens mainly due to wear of bearings and gears. To restore functionality, it is necessary to replace all worn elements;
Difficulty changing gears. The reasons for this may be problems with the clutch, deformation of the gearshift lever or shift forks. Troubleshooting is carried out by replacing damaged clutch and gearbox elements;
Spontaneous transmission shutdown. This malfunction occurs due to wear of the clamps of the sliders of the power forks. The malfunction is eliminated by replacing the springs and the clamps themselves, sliders;
Oil leaking from the box. Leaks occur due to damage and severe wear of the box seals. Everything can be eliminated by replacing rubber elements;

Of course, there are other types of malfunctions, for example, jamming of the gearbox while driving, inability to engage or disable any gear, destruction of gears or shafts, breakdown of the gearbox housing. But such problems arise much less frequently and are mainly due to improper operation of the gearbox, as well as design defects in the component elements of the box. Elimination of any of the malfunctions is carried out on the removed box. Therefore, in order to restore the functionality of the gearbox, you must first know how to remove the gearbox on a VAZ-2101. Moreover, it doesn’t matter whether the VAZ-2101 gearbox is being repaired or replaced, it will still have to be removed.

Fastening the VAZ-2107 gearbox

The front part of the box is fixed to the engine with clutch housing bolts. When removing the gearbox, these bolts are unscrewed last. From below, the box is supported by a cross member or bracket, which is attached to the body with 13 bolts and nuts. The cross member has a part called a cushion: it is on it that the body of the gearbox rests. When the pad wears out, vibration may occur during movement, so it should fit snugly against the gearbox housing. The cushion is attached to the bracket with two 13mm bolts. The rear part of the gearbox is connected to the driveshaft with three 19mm bolts.

Video: how to remove and replace the VAZ-2107 gearbox cushions

Removing the box

So, first of all, let's look at the procedure for removing an automatic transmission from a car. Typically, the procedure is carried out as follows:

First, we completely drain the oil from the box or plug all the holes from which it may leak, but the first option is much preferable;
Then we uncouple the third-party components of the car from the automatic transmission. These include the oil system, control rods, cables and electrical circuits connected to the box. We do not disconnect the torque converter from the mechanism and remove it together with the gearbox;
We find the bolts securing the automatic transmission to the engine and car body and, having attached the removable mechanism to the box, carefully unscrew them. Be sure to make sure that the prepared puller is reliable and can withstand the weight of the gearbox, which is often 60-100 kilograms;
After all the fasteners are unscrewed and the automatic transmission is freed, carefully remove it from the shafts of the engine and the entire car;
Then all that remains is to put the box in the disassembly area.

How to remove a VAZ-2107 gearbox yourself

Before you begin dismantling the gearbox, you should prepare the tools and materials that may be required during the work, and also decide on the location for disassembly.

You can remove it (it’s even easier for one person - no one gets in the way), put a board across the hole, and drag the box onto this board. But it’s probably very difficult to stick one in, the problem is not even the weight of the gearbox, but putting the gearbox on the shaft so that the box “sits”

[x]

https://www.lada-forum.ru/index.php?showtopic=49447

What tools will you need?

To remove and replace the VAZ-2107 gearbox you will need:

a set of open-end and ring wrenches, among which there must be keys for 10, 13, 19;
a set of sockets of the same size as the keys, as well as cardan joints with an extension;
pliers, screwdrivers, tweezers;
funnel and container for oil;
jack and wooden beams;
rags.

Preparatory work

Work on removing the VAZ-2107 gearbox is carried out, as a rule, in an inspection hole, on an overpass or using a lift . The sequence of actions may be as follows:

the car is raised with a jack on both sides, wooden beams are placed so that the rear part remains suspended;

After this you need:

disconnect the oxygen sensor;

Removing the gearbox control lever and other work in the interior

Inside the car, you need to disassemble the gearbox control lever. To do this, lift the handle cover and secure the locking sleeve at the very bottom of the lever with a screwdriver. Then you need to remove the bushing from the lever, and remove the lever itself from the mechanism. Using tweezers, remove the rubber lever damper from the pulled out rod. Next you need:

remove the three remaining bushings on the so-called rocker;

Removing the gearbox

Then you need to go under the car again, drain the used oil from the box into a previously prepared container, and then do the following:

Unscrew the bolts that secure the clutch housing protective cover;

The gearbox weighs more than 50 kilograms, this should be taken into account when removing fasteners to avoid injury.

All classics have 4 bolt fasteners. Check, if the car is new and the gearbox has not yet been removed, then the upper bolts can be covered with factory shipping washers! The bolts are not visible in the murzilka, but look from the side of the spark plugs just above the bottom bolt, it is very clearly visible, the other one is above the starter.

byran

https://www.semerkainfo.ru/forum/viewtopic.php?f=12&t=1512&start=60&view=print

How to remove the gearbox

You can consider removing a gearbox using the example of a mechanical device. For this work you will need a set of wrenches, pliers and a flat-blade screwdriver. It is recommended to carry out work on a pit or a lift. The algorithm of actions will be as follows:

The vehicle is positioned so that further work can be carried out.
Remove the battery.
Remove the air filter, its mounting parts and the battery shelf.
Remove engine mudguards.
Be sure to drain the oil from the gearbox if you plan to change this device.
Disconnect the front wheel drives from the gearbox.
The electricians begin to turn off the wires - disconnect the wires from the speed sensor, reverse light switch, etc.
Pull the motor harness aside.
Disable the hydraulic drive in accordance with the manufacturers' recommendations.
The additional exhaust gas neutralizer is removed. Otherwise, it will be impossible to install the motor support.
The cables are disconnected, then the starter is removed, but the wires of the device are not touched, and the device itself is simply moved to the side so as not to interfere with further work.

How to put the gearbox in place

Install the gearbox in the reverse order.

Clutch disc alignment

If the clutch was removed during the dismantling of the box, then before installing the gearbox in its place, the clutch disc will need to be aligned. It is known that on the “seven” (as well as on the rest of the “classics”) the input shaft of the gearbox protrudes beyond the gearbox and is driven by the driven clutch disc using splines. Even further down, the input shaft is located in the crankshaft bearing. The point of centering is that the feredo should hit the center of the crankshaft bearing. If this does not happen, installing the input shaft of the box will be impossible: even if you hit the splines, the shaft will not fit into the bearing.

To center the disk, you will need any metal rod (optimally a piece of the old gearbox input shaft). The feredo is placed inside the basket, after which the basket is suspended from the engine housing. The rod is inserted into the hole and seated in the bearing. In this position, the basket is firmly fixed to the body.

The fact is that, as I already said, classic gearboxes are practically eternal. Axles can change, engines, bodies can change, but the gearbox lasts the longest. And it doesn’t happen that it works halfway, either it works or it doesn’t, therefore, from disassembly you can buy a gearbox in good condition with no defects at all. You can, of course, buy a new one, but it was already made in Russia, and those that were disassembled were taken from Soviet-made cars, so I would trust them more.

I can’t remove the box from the engine, what should I do?

Good evening everyone.
I encountered an unusual problem: We left Crimea towards home (Moscow) and the clutch immediately stopped working. After checking the slave and master cylinders, we came to the conclusion that the release bearing had died. We drove to Moscow, changing gears without a clutch pedal (the clutch remained in the clamped position). We didn’t reach Moscow 250 km, then we drove on ties.

Since Monday, my friends and I have been doing repairs and have encountered this: The box can only be “removed” 7-9 cm from the engine. It doesn't go any further. Not at all. Today is the 3rd day of torment with the checkpoint, we tried everything possible (they even tried to pull it off with a car). Something apparently jammed inside the bell (most likely the disk, we think). How to remove the gearbox during such introductory instructions. It turns out to be a vicious circle, in order to fix the problem you need to remove the gearbox, but it’s impossible to remove the gearbox because of the problem.

Thanks in advance everyone for your advice!

Is it possible to unscrew the basket through the slot?

Unfortunately no, the gap is too small for this operation.

7-9 centimeters. Either your hands are 5 meters, or 7-9 millimeters.:confused::confused: Anyway, the key can be made thinner

Theoretically, you can try from below, but there’s no way to crawl up from above.

Is the motor also jammed?

A classic of the genre. The support bearing in the flywheel is stuck to the input shaft. Unscrew the basket, turning the engine. Rock it and water it with water through the shelve.

Don’t you think that in this case the checkpoint would be completely impossible to move?

There is a separate topic on the forum called “humor” or PM at worst.

Theoretically, you can try from below, but there’s no way to crawl up from above.

What were you doing there for 3 days? Turn the flywheel and unscrew it.

Don’t you think that in this case the checkpoint would be completely impossible to move?

No, it doesn’t seem like it. Only the play of the input shaft gives a few mm. Plus the play of the bearing itself. About 7-9 cm, a typo? If you move the gearbox that much, it should already fall. By the way, this problem was discussed in detail on uazpatriot.ru

Don’t you think that in this case the checkpoint would be completely impossible to move?

Question, can you describe in more detail how the whole process went and how far the box actually moved away from the engine.

Don’t you think that in this case the checkpoint would be completely impossible to move?

If it falls apart, then the gearbox can be moved a distance of approx. 7cm. the inner race should fit into the disk.. well, for the sake of it, I don’t know how to say, did you remove the levers or not? The inner race does not pass through the splines of the driven disk. (shaft 29 mm). About what levers? 409 engine.

If it falls apart, then the gearbox can be moved a distance of approx. 7cm.

The inner race does not pass through the splines of the driven disk. (shaft 29 mm). About what levers? 409 engine.

Can you switch speeds with the power of thought? what kind of bearings are 203 in the flywheel?

Why couldn't they remove it?

Thanks to everyone who gave good advice