Replacing 5th gear gear Lada Largus (reviews and comparisons)

If you have three thousand rubles to spare, do the firmware.

Fuel consumption will not drop and power will not increase (well, maybe 5-7 hp is a matter of faith), but in 1-2-3 gears it will be much more comfortable, because the engine responds more smoothly and adequately to pressing the gas, i.e. .e. the movement is smoother, it doesn’t jerk as much when changing speed and simultaneously pressing the gas or resetting. Yes, and it pulls from slightly lower revs. It is noticeable in the city when pushing in a traffic jam; on the highway the difference is not visible.

On the plus side, when the engine is cold when starting, the speed is slightly higher - something around 1200-1300, and drops smoothly when it warms up. What is more interesting, because. Previously, the engine was openly “stupid” for the first few minutes.

PS. There is no need to expect fabulous changes from the firmware! A little here, a little here - and the comfort has already increased.

Firmware from HotRus

firmware from Paulus, time - 8-10 minutes, money - 3,000 (at that time there was a 10% discount, so I have 2,700 rubles)

Largus 5th gear ratios are excellent for those who drive the car mainly around the city, often with a full load. The shortcomings are revealed on the highway when you don’t have time to reach 100 km/h, and the engine speed is already at around 3000 rpm. You can get rid of the hum and howl of the engine and gearbox with the help of a simple modification: “replacing the fifth gear gear.”

Gear ratios of Lada Largus gearboxes

Depending on the Largus configuration, the standard 5th gear ratios may be different. Comparisons of different modifications in the table:

03–05

Fuel consumption on the Lada-Largus test route with different fifth gears.
Gear ratio: 0.892 (1); 0.820 (2); 0.795 (3). Fuel consumption on the Lada-Largus test route with different fifth gears. Gear ratio: 0.892 (1); 0.820 (2); 0.795 (3).

There are different sets of gears on sale, each of which will cost about 3,000 rubles. The craftsman will charge the same amount for a replacement. The beauty is that you won’t have to part with the car for a long time: a competent repairman can handle it in a couple of hours. Let's try!

Replacing Largus 5th gear gear

The design of the Largus transmission allows you to change the 5th gear gears without disassembling the entire gearbox or even removing it from the car. You will need a gear puller, a hair dryer and two screwdrivers. If you have the necessary tools, the process takes no more than 2-3 hours. Video instructions:

When replacing gears with their own hands, car enthusiasts most often encounter difficulties when dismantling a small gear. Removing it without a special puller is not so easy, because... it sits on the shaft using a thread locker. In this situation, a hair dryer can be useful; after heating, the part will easily slide off. Don't forget to fill in new transmission oil.

What happened?

In this case, gears with u=0.738 were installed.

At a speed of 120 km/h, before installing new gears, the experimental Largus consistently maintained 4,000 rpm. Now the crankshaft only makes 3,200 revolutions. The difference is very significant.

Gear sets come with different gear ratios, and if you don’t know which one is best to choose, it makes sense to consult a specialist.

By the way, you don’t have to suffer in the garage yourself. At Largus-Service, the cost of replacing fifth gear gears is 2,500 rubles.

We wish success to those who dared to carry out this work on their own and do not forget that the oil must be changed after 1000 km!

Reviews about 5th gear gears

Based on feedback from owners of the Lada Largus car, as well as reviews, trials and tests, we have compiled a comparison table:

This modification is primarily used to reduce engine speed when driving in 5th gear. Fuel savings after such upgrades are not significant. If fuel consumption with PCH-5 0.892 was 7.4 l/100km, then with 0.795 it will decrease by 0.3 l and amount to 7.1 l/100km. If you expect that replacing the 5th gear of Largus will pay off in terms of gasoline savings, then you will have to wait several years.

replacing fifth gear gears - logbook Lada Largus VBH project rough 2015 on DRIVE2

Hello friends! For a long time I had plans to replace the fifth gear, everything didn’t work out, now one thing, then another, in general everything is like everyone else))). And I also wanted to get acquainted with the Larchik service station, so it turned out to combine these two events.

The agony of choosing gears was just as difficult; I spent a long time deciding which ones to install, reading reviews of people who had already made this choice, and settled on 0.

795 (not the fastest, but they carry a load), I called Alexander from Larchik, agreed on a replacement, I’m going to see them and I keep wondering: “How often do I travel laden? well, a couple of times a year on vacation with my family and fishing with friends, and the rest of the time I go alone, empty, and why do I need 0.795?”

At the last moment, I decided to set it to 0.756 and, as it turned out, it was not in vain that I changed my mind, and the speed is a little higher and the revs are lower, and this is the point of the whole idea.

I arrived in Larchik at the appointed time, everything was clear, they were already waiting for me, the lift was empty, there was no queue. master mechanic Andrey immediately got to work.

For those who are planning a replacement, I am posting the components

fifth gear LOGAN 0.756 driven 8200611301 1 3326fifth gear LOGAN 0.756 driven 8200607981 1 3326 cotter pin JB3, 7703067324 1 275 Gearbox secondary shaft bolt 8200110072 1 605 Guy rear input shaft Renault 7700115816 (replacement for 8200776177) original 1 420 Oil drain plug gasket Sasic 1640020 analogue 8200641648 1 20

Transmission oil ELF Tranself NFJ 75W80 GL-4+ (1 l) 7711427090 0.4 600 240

and a table for information

Everything was done quickly, well, for which I want to say thank you to Larchik, I also thank Alexander, he paid special attention to me, helped me figure out some small things absolutely free of charge, which is a rarity these days.

In general, the impressions from Larchik were good, I recommend it.

Yes, I forgot to write, all the components were provided by Larchik, I didn’t buy anything myself, the price was announced for everything (labor and components) ~13,000, but I almost forgot the most important thing, I was very pleased with the discount for club cars, everything cost me a little more than 10,000. THANK YOU Larchik .

Well, a photo of what was and what became

In general, I am satisfied, I recommend it to everyone. I hope my report will be useful to many. Likes and shares are welcome))) Beaver to everyone, as they say))) EVERYTHING WILL BE GOOD!

I forgot to indicate important information; when purchasing gears, count the number of teeth (there is often a discrepancy).

Source: https://www.drive2.ru/l/9254704/

Lack of gears

An analysis carried out with the help of a car service, as well as numerous reviews from Lada Largus owners, established that the problem comes from the most popular version of the 1.6-liter engine (K4M) with 16 valves. It is the Largus 5th gear gear in this pair that creates discomfort in motion. As an experiment, the manufacturer tried to install various combinations of boxes and main pairs on cars (see table).

An interesting feature was the fact that the Largus van version has higher speed indicators in last gear than a similar passenger representative with sixteen valves. The manufacturer intended everything the other way around. Despite the reduced noise level in the cabin in 5th gear, which significantly affected the level of comfort, fuel costs increased significantly. Hence the need arose for such a procedure as replacing the 5th Largus gear.

Lada Largus

Over time, you get used to the shortcomings of the car you drive all the time. But there are exceptions to the rules. For two years now I have been using the Lada-Largus editorial station wagon and still cannot accept the heart-rending roar of its engine on country roads. On a long journey, you get tired of this tedious monologue, and the rising tachometer needle puts pressure not only on the psyche: you constantly think about increased fuel consumption. Judging by the numerous unflattering comments on thematic Internet forums, I’m not the only one who doesn’t like the too short fifth gear. Moreover, this problem mainly concerns the most popular passenger version with a 16-valve 1.6-liter K4M engine. Different boxes and main pairs are installed on Largus (see table). And in a passenger car with a sixteen-valve engine, fifth gear turns out to be the most high-torque. Even the van speeds faster in fifth gear. Although logically it should be the other way around.

Pros and cons of a sixteen-valve

The standard version of the gearbox has a number of positive and negative aspects, which were also noted by car owners of the Russian station wagon. The advantages include:

• excellent dynamics indicators;
• confident movement in traffic, without the need for constant switching;
• over long distances, driving in fifth gear creates the feeling of an automatic transmission;
• the ability to pick up the clutch from the last gear even from 50 km/h.

The disadvantages of driving include a rather unpleasant noise level, as well as increased fuel consumption, which, given its cost in 2017, is a very unpleasant situation. As an experiment, specialists from the LADA technical center set the task of changing gear ratios. The structural features of the car allow you to change the 5th gear gears on the Lada Largus without affecting the integrity of the box, which means that the unit is kept in place without the need for disassembly.

Procedure for replacing 5th gear

First, you should place the vehicle on a lift or stand, and then dismantle the front, left wheel. Next, the sequence of work will be as follows:

1. By carefully removing the latches and pistons, the plastic shield that protects from dirt is released.
2. Unscrew 2 bolts on the subframe bracket: the top one completely, the bottom one loosened a little and then moved to the side of the bracket.
3. The fasteners located in the area of ​​the power steering and gearbox are released, followed by the removal of the connector from the reverse switch.
4. Afterwards, you need to drain the oil by first unscrewing the drain plug and 3 bolts located on the back of the gearbox cover.
5. Now you need to carefully dismantle it, being careful not to damage the lubrication chute. The 5th gear fork retainer (pin) is carefully knocked out with a rod.
6. Next, you will need to block the primary and secondary shafts, which will make it easier to unscrew the fasteners on the gears. To do this, the fork is pulled back and the first speed is turned on, followed by removing the nut on the input shaft.
7. Using a two-jaw puller for convenience, the clutch, synchronizer fork, as well as the 5th speed hub and gear are dismantled.
8. Now it’s the turn of the bolt on the secondary shaft to remove the gear. All.

All that remains is to replace the necessary gears and carry out careful assembly in the reverse order. It is recommended to take into account several rules during installation. For example, using a liquid fixative, process the splines on the drive gear. The nuts of the secondary and primary shaft should be tightened to 80 and 190 Nm, respectively. You will definitely need to replace the oil in the gearbox with a fresh copy.

Reliability jr5

It’s difficult to praise the mechanical JR5 in any way, but there’s nothing particularly to reproach either. The unit itself is structurally simple, often hums, and the clarity of gear shifting leaves much to be desired. Over time, it requires overhaul or, in severe cases, replacement due to the destruction of key mechanisms. Often, car owners have to disassemble the box because the 5th speed refuses to turn off.

A roller bearing with a plastic cage on the secondary shaft is another weak point of the JR5 mechanics. The separator often falls apart even at short mileage, which leads to balls clumping together. At a minimum, the manual transmission starts to hum, but there have been cases when balls got caught between the gears. The deficiency was eliminated after the JR5 modernization.

Many problems can be avoided if you follow the manual transmission maintenance regulations and use original oil. It is advisable to change the working material of the box every 50-60 thousand kilometers. TranselfTRJ 75W-80 is suitable for replacement. After passing 10-15 thousand km, it is necessary to take control measurements of the fluid. In general, the box is old, moderately reliable, but not perfect. With the right approach it will last a long time and can be repaired without problems.

In conclusion

As a result, such a procedure as replacing the 5th gear gears of the Lada Largus is not extremely difficult and can be performed independently, following the points indicated above. To perform the work, you will need the appropriate tools, as well as an equipped room. However, if the LADA Largus car owner does not have sufficient experience in working with mechanics and it is impossible to carry out the procedure on his own, it is better not to take risks and trust the professionals. A properly configured gearbox and aligned gear will help avoid unpleasant noise and save fuel.