VAZ 2114 gearbox: removal, do-it-yourself repair

VAZ 2114 gearbox malfunctions
Preparing for removal
Dismantling the VAZ 2114 gearbox: removal and repair

In domestic VAZ cars, almost any repair can be done with your own hands if you have the appropriate skills and experience. But if even a novice car enthusiast can change disks, then to service and replace power plant parts you need to know your car 100%. The VAZ 2114 gearbox is a complex unit with a lot of parts and fasteners that you will have to tinker with. How to remove the VAZ 2114 gearbox: removal, repairs and malfunctions. Before work, you should familiarize yourself with the device: the gearbox diagram is present in the operation and maintenance manual for the Lada Samara.

Removing the gearbox may be necessary in the following cases:

Repair and diagnostics of the mechanism itself.
Transmission repair - the clutch discs can only be reached if the gearbox is removed.

The design of the gearbox, as well as other mechanisms, is common to the entire Lada Samara model range. The VAZ 2114 engine is paired with a 5-speed manual transmission. As for the features of the mechanism, these include the adjacent operation of the main gear and differential.

VAZ 2114 gearbox malfunctions

First, it is worth considering faults that can be removed without dismantling. If the reverse gear does not press, it is worth checking the clamp and the mechanism itself for blocking. Another common problem is a rattling gearshift lever. The sound comes from a bushing that hits the surface of the wings. You can solve a manufacturing defect using a file - the error is determined and excess metal is removed.

It is recommended that you carry out the removal repairs together with a friend. During work, there will be times when you need to unscrew the fasteners both under the hood and in the interior of the VAZ 2114. It is also more convenient to check with an assistant whether the gearbox was installed correctly.

Repair and, accordingly, removal of the gearbox is required when, when changing gears, a grinding or crunching sound appears in the gearbox, a hum is heard, and the lever moves with difficulty. Also, dismantling is indispensable when some gears are switched off randomly (the problem is caused by a drive adjustment failure or a synchronizer failure).

Symptoms of a problem

A knock or whistle when the gear is engaged are the main signs of failure of the release bearing. Most often, the driver is the cause of accelerated wear on the release lever. The habit of keeping your foot on the pedal greatly affects the resource. For example, novice drivers often keep the clutch disengaged while standing at a traffic light or in traffic jams.

The bearing itself is quite reliable and, with proper operation, the service life reaches 150-200 thousand kilometers. If a bearing fails, it only needs to be replaced; it cannot be repaired.

Preparing for removal

Preparatory work includes the removal of all parts that block access to the gearbox. You can begin removal when you have a board or other hanging equipment, a set of wrenches and sockets, different types of screwdrivers, and WD-40 lubricant at hand. It is also recommended to carry out work in a garage where there is a car pit. Now you can proceed to the analysis:

It is necessary to remove the terminals from the battery and then remove it. The next step is to completely remove the working fluid from the gearbox and remove the starter. Some bolts may not budge, in which case WD-40 must be used;
Now the VAZ 2114 needs to be placed on the pit and the crankcase protection, which is attached to the bottom with three fasteners, removed;
There is a cable coming from the clutch fork - it should be disconnected from the fork and then removed from the gearbox bracket;
Next, you need to hang the motor to gain access to the lower parts. After this, all wires must be disconnected from the speed sensor. A spring is used as fastening here.

How to remove a VAZ 2114 gearbox, its repair and malfunctions

Removing the gearbox may be necessary in the following cases:

Repair and diagnostics of the mechanism itself.
Transmission repair - the clutch discs can only be reached if the gearbox is removed.

VAZ 2114 gearbox malfunctions

It is recommended that you carry out the removal repairs together with a friend. During work, there will be times when you need to unscrew the fasteners both under the hood and in the interior of the VAZ 2114. It is also more convenient to check with an assistant whether the gearbox was installed correctly.

REMOVAL AND REPAIR

Almost any DIY repair of a VAZ 2114 gearbox - installing new bearings, clutch or gears - involves removing it. To do this, you will need screwdrivers, a set of wrenches, WD-40 and hanging equipment to lift the unit.

Let's figure out how to remove the gearbox of the fourteenth:

We drive the car onto an overpass or into a garage with a pit. First of all, we disconnect and remove the battery, then drain the oil from the gearbox and remove the starter. To do this, you need to disconnect the power wires from it, remove the protective jacket, unscrew the two fixing nuts from the bottom (from the pit) and one from the top of the starter;
Now you need to remove the connecting cable from the clutch release fork and remove it from the bracket on the gearbox;
Disconnect the wiring to the speed sensor. The wire block is secured by a spring, which must be compressed to disconnect the connection;
We climb under the fourteenth and disconnect the wiring from the reverse sensor;
We tighten the bolts with which the jet thrust bracket is attached to the unit body;
We remove jet thrust. To do this, you need to loosen the clamp connected to the rod and move it back, which will make it possible to remove it from the hinge;
Now you need to dismantle the wheel drives: remove the left one completely, and simply unscrew the right one, move it to the side and hang it on the car body;
We unscrew the bolts from the ball joint (left) that secure it to the steering knuckle;
We dismantle the gearbox mount to the engine on the lower right side; to do this you need to remove the supporting brackets from the stud;
Remove the clutch housing cover (it is secured with 3 bolts);
Unscrew the bolt on the lower left gearbox mount;
Unscrew the nuts that secure the left and rear engine mount;
Now we remove the fixing bolts with which the gearbox is attached to the rear engine support. We dismantle the support itself;
Using a screwdriver as a lever, insert it into the hole between the engine cylinder block and the clutch housing, and move the gearbox off the guides as far back as possible. The rear part of the box body should pass on top of the suspension extension, and the input shaft will be disconnected from the clutch, after which the unit can be removed from under the car.

Now you know how to remove the VAZ 2114 gearbox. Good luck with your driving without any breakdowns!

VAZ 2114 gearbox: device, malfunctions, removing the gearbox yourself

The fourteenth VAZ (like the VAZ 2113 and VAZ 2115) is equipped with a five-speed manual gearbox. This gearbox is similar to the units that were installed on the eight, but the main pair has been changed.

From this article you will learn the technical characteristics and design features of the gearbox on the VAZ 2114, how the repair and maintenance of the fourteenth gearbox is carried out, and what is the current cost of used and new units.

Disassembled gearbox

CONSTRUCTION FEATURES

Structurally, the gearbox device is divided into 3 main parts: gearbox housing, rear cover and clutch housing. The internals of the device can be divided into two groups - the main pair and the differential with gear ratios.

The main pair, also known as the drive shaft of the gearbox, performs the function of reducing the speed transmitted from the engine to the crankshaft. The VAZ 2114 GP gearbox reduces engine speed by almost four times (gear ratio – 3.7).

Manipulations with the main pair, aimed at changing the gear ratio, allow you to change the length of the gears, which makes it possible to influence the acceleration and maximum speed of the fourteenth. However, it is not recommended to interfere with the operation of the box without proper qualifications - you can do irreparable things.

The VAZ 2114 gearbox that comes as standard has the following gear ratios:

First speed – 3.636;
Second speed – 1.95;
Third speed – 1.357;
Fourth speed – 0.941;
Fifth speed – 0.784;
Reverse – 3.53.

As evidenced by the reviews of the owners of the fourteenth, the standard gearbox is not the ideal of engineering thinking - the first speed is too short, the second, on the contrary, is long. Poorly selected gear ratios cause a serious loss of vehicle dynamics during acceleration when switching gears from 1 to 2.

The cost of a new gearbox for a VAZ 2114 is about 16 thousand rubles; used gearboxes can be found at prices ranging from 4 to 10 thousand, their price varies greatly depending on the condition.

POSSIBLE FAULTS

Despite the imperfect operation, the VAZ 2114 gearbox, when used correctly, is distinguished by good endurance and durability. If you do not hesitate to prevent and promptly eliminate breakdowns, repairing it is not expensive.

Let's consider the main gearbox malfunctions that the owner of the fourteenth may encounter:

Lack of speed fixation when switching. If the speeds are out of whack, the cause is most likely worn teeth on the gears and clutch. Accelerated wear of these parts is caused by incorrect gear shifting and non-compliance with the speed limit. The problem is resolved by replacing the gears.
The gear shift lever is tight. The reasons are mechanical damage to the teeth of the lever fixing on the hinge or wear of the reaction rod; it’s also a good idea to check the integrity of the plastic parts of the gearbox drive;
The VAZ 2114 gearbox is humming. Most often, the gearbox is humming in neutral gear. First of all, you need to check and, if necessary, add oil (in general, the box may hum due to the use of low-quality lubricants). If the oil is normal, the problem is wear of the bearing on the input shaft, which can only be determined through diagnostics or by disassembling the gearbox;
Crunching sound when changing speed. Here it is necessary to change the worn out synchronizer, and it must be changed immediately after the problem has been discovered, because if you tighten it, the gear unit will completely fly off;
Knock. The gearbox on a VAZ 2114 can knock both under load and without it, and in any gear. The cause of the knocking noise is a damaged drive gear of the problematic transmission.

We remove the VAZ 2114 gearbox

Many car owners have a question about how to remove the VAZ 2114 gearbox in order to repair or tune the transmission with their own hands. The design of this unit is common to all cars of the Lada Samara family: the gearbox is mechanical, 5-speed, combined with a differential and final drive.

The input shaft gears are in mesh with the secondary gears of the forward gears. Driven gears are installed on the secondary shaft. Each of those that includes forward gears has a synchronizer. But there is no synchronizer on the reverse gear. The gearbox drive includes a selector rod and gear shift lever, a ball joint and gear mechanisms.

Repair of the VAZ gearbox may be required if, when changing gears, there is a crunching or grinding noise in the gearbox, it hums, moving the lever causes difficulties, some gears switch off spontaneously (the synchronizer is damaged or the drive is incorrectly adjusted). The gearbox is removed if the vehicle's clutch is subject to repair.