How to install a gearbox on one VAZ 2114

02/04/2022 14 302 VAZ 2114

Author: Ivan Baranov

While operating a car, some car enthusiasts are faced with the same important question, namely: how to remove the box on a VAZ 2114 or on another car of this AvtoVAZ line. The VAZ 2114 gearbox is the same as on the VAZ G8. The only difference is that the VAZ 2108 does not have a dipstick, and it accelerates faster.

The gearbox may need to be removed in a variety of cases, for example, in order to replace the clutch or something in its system, as well as to repair the gearbox itself.

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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.

Disassembly

Having removed the gearbox, you can proceed directly to the main thing - disassembly. This will allow you to change damaged elements as you work, identify existing faults and solve problems on your own.

Clean and thoroughly wash all external surfaces of the gearbox.
Place the box in a vertical position and remove the back cover.
Remove the clutch cable bracket, then use a rubber hammer to knock the rear cover off the gearbox.
Remove the old gasket. She will be replaced.
Engage any of the two gears - 3 or 4.
Unscrew the bolt that holds 5th gear, then turn it on.
Simultaneously turning on the indicated speeds will allow you to fix the shaft and prevent it from turning.
Unscrew the nut on the secondary shaft, and then on the primary one.
Remove the 5th speed synchronizer along with the fork.
Remove the fork from the coupling. Remove the synchronizer as carefully as possible. If you allow the clutch to move away from the hub, the spring-loaded balls that secure the synchronizer will simply fall apart.
Remove the 5th speed synchronizer locking ring.
Remove the 5th speed driven gear from the output shaft.
Remove the thrust ring located on the needle bearing.
Remove the needle bearing itself from the 5th speed gear.
Remove the drive gear from the drive shaft and remove the bearing plate.
Now the needle bearing bushings should be removed from the secondary shaft, and the thrust washer should also be removed.

Failures that do not require removal of the gearbox

If the reverse gear does not engage, then it is not necessary to remove the box: it does not have a synchronizer installed, the problem can be solved more simply. Before making a decision, you need to check the universal joint and the linkage, as the problem may be caused by a loose clamp. Another reason could be that the mechanism is blocked.

To check, remove the lever between the seats and visually assess whether there is a problem. The same operation must be performed if there is a crunching sound when engaging 2nd gear, since the most likely cause of the malfunction may be a worn synchronizer, which in the Lada Samara family of cars is not very durable.

Do I need to remove the gearbox if the gearshift lever rattles? This question worries many, but most often, removing the gearbox will not be necessary to fix the problem. An unpleasant sound occurs when the bushing that connects the rod and rod touches the wings of the latter. The metal bushing rattles due to frequent impacts on the metal of the wings. The defect of the VAZ 2114 manufacturer can be easily eliminated with your own hands.

According to reviews from car owners, this simple step eliminates the rattling of the gearshift lever. Handle vibration disappears. It will move stiffly, but it will gradually loosen and work easier.

Preparatory work

Before starting work, the car should be placed on an inspection ditch or driven onto an overpass and make sure that the raised hood is secured and the car is on the handbrake. During work, the engine will need to be suspended.

Therefore, you should provide the opportunity to install a hoist or use improvised means, a special device (crossbar to support the engine). To repair a VAZ 2114 gearbox, you need the following tools:

Transmission device: 1 - input shaft; 2 - secondary shaft; 3 — rod for shifting the third and fourth gears; 4 — fork for shifting third and fourth gears; 5 — differential; 6 — fork for switching first and second gears; 7 — fork rod for shifting first and second gears; 8 — gear shift rod; 9 — fifth gear shift fork rod; 10 — gear shift mechanism; 11 — reverse intermediate gear; 12 — clutch housing

It is more convenient to carry out work on removing the VAZ 2114 gearbox together with an assistant. First you need to disconnect the battery and put it aside. Drain the oil from the gearbox, having previously warmed it up, to do this, drive about 5 km before repairing.

With the car installed on the overpass, unscrew the 3 bolts securing the crankcase protection and remove it, remove the dipstick to check the oil level (in models produced earlier than 2003) or unscrew the oil filler plug. Place a container under the oil drain hole, use a 17mm wrench to unscrew the plug and wait until the oil is completely removed from the gearbox.

Remove the engine starter by sequentially disconnecting the column of wires, unscrewing the fastening nut and removing the wire on the contact bolt of the starter relay under the hood of the car. Go down under the bottom and remove the unit fastenings, then unscrew the last fastening again under the hood. Remove the starter from below.

Disconnect the speed sensor wires under the hood by compressing the spring holding the block. Disconnect the reverse sensor wires from below. Under the hood, unscrew bolts 1-3 connecting the gearbox housing and the ignition module bracket. Disconnect the torque rod bracket, loosen the gear shift rod clamp and remove the speed selector rod hinge rod.

To do this, you need to move it back a little. Remove the left front wheel drive and install a plug in its place. It is enough to disconnect the right wheel drive from the box and move it to the side, securing it in this position. Remove the left ball joint bolts that secure it to the steering knuckle.

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!

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

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. 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:

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.

Transmission 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).

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.

Removing the gearbox

If all the steps described above have been completed correctly, then withdrawal can begin. The process goes as follows:

Unscrew the gearbox bolts

We hang up the gearbox and remove it

When the work is completed and the box is completely dismantled, you should disassemble it and check the parts for wear. If possible, repairs and replacement of damaged elements are carried out. In some cases, the problem can be solved by replacing bearings or seals, rather than purchasing a new gearbox.

Source

Conclusion

The gearbox synchronizer is a mechanism that no modern car with a manual transmission or automatic transmission can do without. Without it, the unit would not only work noisily, but would wear out even faster. In addition, manipulating the gear shift would be somewhat more difficult. Although synchronizers have an impressive service life, sometimes they fail. Accelerated wear of mechanisms is associated with ignoring the oil change regulations, aggressive driving and frequent alternation of fast driving and stopping followed by a sharp start. Fortunately, today you can buy both a new synchronizer and its individual components. Although many craftsmen do not recommend repairing this part, in fact it is repairable. We still suggest that car enthusiasts buy a new synchronizer rather than try to “revive” the old one.

Gearbox (gearbox) for VAZ 2114 - repair, disassembly and assembly of gearbox

Symptoms of a malfunction on a VAZ 2114 gearbox include problems when turning on the speed. As practice shows, the main source of these problems is the VAZ 2114 gearbox: malfunctions in its mechanism (the VAZ 2114 gearbox rattles, or the VAZ 2114 gearbox rattles, the VAZ 2114 gearbox rattles, the VAZ 2114 gearbox leaks). Repair of the VAZ 2114 gearbox, disassembly and assembly of the gearbox is carried out by auto mechanics. But if you have knowledge and experience in driving a VAZ 2114, you can repair the gearbox yourself.

Repair of VAZ 2114 gearbox

According to the source of this article, provaz2114.ru, the most reliable method of keeping the mechanism in good condition is prevention of malfunctions (systematic maintenance) and proper operation. But even so, situations are possible that require prompt repairs. When the gearbox cannot be repaired, information becomes relevant about how much a new VAZ 2114 gearbox costs? Estimated price in stores is 16 thousand rubles, used: 4000-10000 rubles. When the gear knob is loose on a VAZ 2114, it is possible that the solution to the problem is to install a new one. The VAZ 2114 gearbox linkage also needs to be replaced.

General symptoms

Symptoms are manifested by seven signs, which include:

Each of the listed symptoms has its own etymology and an exact picture of its manifestation, which objectively characterizes the root cause of the malfunction.

Crunch in the gearbox

This type of repair requires disassembling the gearbox structure.

The main reasons, a sign of which is a crunching noise during gear shifting:

Knocking at the checkpoint

The sounds of gearbox tapping are ambiguous due to their multiplicity. Therefore, the picture of the malfunction is accurately established by diagnosing the vehicle.

The box starts knocking if:

Oil leakage

If there is an oil leak, the repair task is facilitated by the ability to determine the location of the leak, but most often in practice this is impossible to determine.

Faults that cause oil leakage are the following:

Speeds are flying out

This kind of phenomenon occurs during gear shifting. The main reason for the appearance of such a malfunction is wear of the teeth on the gears and coupling. A factor contributing to the development of weakening speed control is a violation of the rules of gear shifting technique, which occurs when the speed limit is not observed. Replacing the gears of the specified parts eliminates the described problem.

The handle is tight

Factors under the influence of which the movement of the handle is difficult are damage to the locking teeth of the lever itself, wear of the jet thrust, and violation of the integrity of the gearbox drive parts.

The box is humming

This sound appears mainly during neutral transmission. The main reason is the low quality of lubricants. Therefore, the first action that must be performed when this type of technical problem occurs is to check and, if necessary, add oil. If the box continues to hum, then it is necessary to perform diagnostics, since the bearing on the input shaft may be worn out.

Noise in the CP

The box begins to make noise when the oil level is insufficient. This situation can be resolved by adding oil. If the noise does not stop, then it is caused by wear of the seals and mechanisms. This can be eliminated by installing new parts to replace worn ones.

Upon completion of the process of identifying the malfunction, its cause and source, as well as the factors influencing the occurrence of malfunction of the gearbox, it is necessary to become familiar with its structure and the structural features of the mechanism.

Transmission device diagram

The gearbox mechanism is a system of parts that has an independent structure and characteristic features determined by the model. Before you begin repairing the gearbox, you must familiarize yourself with the diagram of the transmission mechanism in the operating manual. The diagram contains the names of the parts and the structure of the relationship.

Knowledge of the structure of the structure reduces the time spent on identifying mounting fasteners and dismantling components.

Gear shift mechanism

The gearshift mechanism is usually mounted in gearbox covers and is used to select, engage, and disengage gears. In addition, devices are installed in the gear shift mechanism that prevent the inclusion of two gears at the same time and prevent spontaneous gear shifting.

The main requirements for this mechanism are ease and simplicity of gearbox control, noiseless and smooth gear shifting, reliable locking of the engaged gear, prevention of simultaneous engagement of two or more gears, as well as protection from engaging a gear opposite to the vehicle's movement while moving. In addition, the activation mechanism must be reliable, durable, not requiring complex adjustments and easy to maintain. Malfunctions of the gear shift mechanism can lead to damage to parts and failure of such an expensive unit as a gearbox.

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The gearbox shift mechanism of a truck (Fig. 1, a) consists of three rods, three forks, three clamps with balls, a fuse for engaging first gear and reverse gear and a locking device. Rods 8, 9, 11 are located in the holes of the internal bosses of the crankcase cover 1. Forks 5, 7, 10 are attached to them, connected to the synchronizer carriages and to the movable gear wheel for engaging first gear and reverse gear.

Clamps 4 hold the rods in the neutral or engaged position, which prevents spontaneous gear disengagement. Each retainer is a ball with a spring installed above the rods in special sockets in the crankcase cover. The rods for the clamp balls have special grooves (holes). Moving the rod with the fork, and therefore the synchronizer, is only possible when force is applied by the driver, as a result of which the ball sinks into its seat.

The locking device prevents two gears from being engaged simultaneously. It consists of a pin 12 and two pairs of balls 6 located between the rods in a special horizontal channel of the crankcase cover. When any rod moves, the other two are locked with balls that fit into the corresponding grooves on the slides.

In order to prevent accidental engagement of reverse gear or first gear when the vehicle is moving, a fuse is mounted in the wall of the gearbox cover, consisting of a bushing, a ring with a spring 3 and a stop. To engage first gear or reverse gear, it is necessary to press the fuse spring all the way, for which some force is applied to the driver control lever.

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The gear shift mechanism of a passenger car (Fig. 1, b) is arranged as follows. Rod 14 of the third and fourth gear shift fork is installed in the holes of the front and rear walls of the crankcase, and rods 13 and 16 are installed in the holes of the rear wall and crankcase boss.

The 15, 21, 23 gear shift forks are secured with a bolt on each rod. To hold the rods in the neutral position and in one of the extreme positions when the gear is engaged, they have three sockets, to which the retainer ball 20 is pressed by a spring 19. The clamps are located in bushings and are closed with a cover 18. In the head of each rod there is a groove into which the lower end of the gear shift lever fits.

The locking device consists of three locking blocks 17. The two outer blocks are installed in the holes of the rear wall of the crankcase, and the middle block is in the hole of the rod 14. When the rod 13 or 16 moves, it squeezes out a block that fits into the socket of the middle rod and at the same time presses the other through the middle block cracker to the socket of the opposite rod. This way, these rods will be locked in the neutral position. When moving the middle rod 14, two crackers are squeezed out at once and the outer rods 13 and 16 are fixed.

***

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Features of the device and structure of the transmission mechanism

The fourteenth model is equipped with a five-speed gearbox similar to the unit installed on the G8, with the exception of the main pair.

According to consumer reviews, the lack of quality of the fourteenth gearbox includes the selection of gear ratios: a very short first speed and a long second. This drawback leads to a loss of vehicle dynamics when switching from first to second gear during acceleration.

The gearbox housing, rear cover and clutch housing are the main parts of the gearbox design structure.

Internal device groups:

Main couple

The drive shaft functionality reduces the speed transmitted from the engine to the crankshaft. The transmission coefficient is 3.7. Thus, the main pair of the “fourteenth” is capable of reducing the indicated speed by approximately 4 times. The length of the gears can be changed by controlling the main pair mechanism. What affects acceleration and the maximum possible speed limit of the vehicle.

Differential with gear ratios

The differential gear ratios of the stock VAZ 2114 gearbox include: 3.636 (first speed number); 1.95 (second speed number); 1.357 (third speed number); 0.941 (fourth speed number); 0.784 (fifth speed number) and 3.53 (reverse speed number).

Having an idea of the structural features of the gearbox mechanism, it is necessary to begin preparing tools, materials and tools that will be useful during the removal and disassembly of the box.

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.

Instructions for removing, disassembling and assembling the VAZ 2114 gearbox

Removing the gearbox is required when troubleshooting parts and the mechanism of the gearbox itself; when replacing the clutch.

Repair work may require one business day, so the instructions below must be started in the morning. Hiring a partner with experience in this type of repair will reduce time costs and improve the quality of repairs.

Preparation

The preparation process consists of the following steps:

Removing and disassembling the gearbox. Procedure for cleaning gearbox parts

We perform the following steps sequentially: