change the steering shaft. if you do not have a business on the slots
My business has “raised” the slots twice already. And during the knock, a small backlash appears. So I’m thinking of embedding an oiler and smearing it. I just don’t know where to drill.
My business has “raised” the slots twice already. And during the knock, a small backlash appears. So I’m thinking of embedding an oiler and smearing it. I just don’t know where to drill.
I cut the oiler in the upper part and pumped up grease. Time will tell whether this procedure will be of any use.
I cut the oiler in the upper part and pumped up grease. Time will tell whether this procedure will be of any use.
I removed the gearbox, tried to adjust it, there is an ellipse nut if you tighten it tight in the middle of the stroke. if weakened, then in the extreme position it is even worse.
Collected. set and got used to knocking drove 180,000. There was an idea to pour thicker oil until I risk it, I think the beating is due to low pressure, it does not knock on a cold one in winter.
I removed the gearbox, tried to adjust it, there is an ellipse nut if you tighten it tight in the middle of the stroke. if weakened, then in the extreme position it is even worse.
Collected.set and got used to knocking drove 180,000. There was an idea to pour thicker oil until I risk it, I think the beating is due to low pressure, it does not knock on a cold one in winter.
In my splines of the steering shaft, it’s clear that the working out appeared if you lift the steering wheel a little, and the backlash and knock disappear. If that doesn't help then replace.
at the beginning of the topic, look, I did enough for myself for a year.
There are hex bolts in front of the steering gear and in the back opposite. What are they for?
A knock appeared almost from scratch in the gearbox itself and gives into the steering wheel at low speed. The steering cardan and column are fully operational.
But the topic is not open. Today I pulled off the longitudinal rod, and in the gur there is such a normal backlash (knock-knock) about a millimeter along the fry. Is there an adjustment, or is this unit a one-time use?
There are hex bolts in front of the steering gear and in the back opposite. What are they for?
A knock appeared almost from scratch in the gearbox itself and gives into the steering wheel at low speed. The steering cardan and column are fully operational.
Got it? Do you have zf? Something the search engine gives one turbidity.
But the topic is not open. Today I pulled off the longitudinal rod, and in the gur there is such a normal backlash (knock-knock) about a millimeter along the fry. Is there an adjustment, or is this unit a one-time use?
Why not disclosed? You remove the steering gear, unscrew and knock off the bipod, on the other hand you remove the plug, core it, tighten it from both sides to the same distance, core, assemble, check, the main thing is not to overdo it.
It dripped along the bipod shaft, dismantled the gearbox, looked for a repair committee for a month, didn’t find it, spat, bought a used one the other day, a shopping mall will come, I’ll install it.
drove power steering ZF LS 90 177 to Hydrolab. Partially sorted out with the replacement of the drive shaft seal and failed eccentrics driven shaft - the knock is gone and the backlash .
1 / remove the drive shaft stopper and the cover under it, unscrew the 4 bolts of the bottom cover, take out everything assembled internals
they said the Gur ZF pump gives 90 bar - weak! and the resource will most likely be less. Maybe I missed something, described what I could see.
Eliminated at Borisov by replacing the oil seal, there are oil seals on the market.
Gur ZF gives 90 bar - weak! and the resource will most likely be less. Maybe I missed something, described what I could see ..
90 bar, can you imagine how much it is? This is a half-inflated oxygen tank, for example. Either you confused Pascals with Bars.
he is unlikely to have mixed up, the markings there on the pump and gearbox are just that.
Pumps are divided into 2 types according to pressure at 90 and 125 bar.
So 125 bar is ours, Gazelle and 90 bar Volga or UAZ.
In any car, the steering parts are subject to the greatest degree of wear, since it is they that bear the greatest load when driving on rough roads, cornering, and also sudden braking. Therefore, the Gazelle steering gearbox often fails, as a result of which it is urgently adjusted. The list of signs of a malfunction of the unit in question, as a rule, includes:
If one or several signs appear at once, immediate adjustment of the steering gear is required, which will allow timely elimination of malfunctions in the operation of the device and reduce the risk of failure of other key units of the vehicle.
When it was possible to achieve the absence of backlash, it is necessary to adjust the gap when engaging the nut pair - shaft-sector. To perform this operation, install a bipod on the shaft and turn it to the middle position by successive rotation of the screw, and then turn the sector shaft directly behind the bipod. The play of the tip of the bipod should not be felt or exceed the value of 0.3 mm.
When the mentioned indicator is greater, then using a plastic screwdriver we dismantle the plastic cover of the gearbox, after which we take out two plugs. Using metal tongs, we dismantle the spring rings on both sides of the body and straighten the holes on the edge of the outer ring. The eccentric outer rings are rotated clockwise until the gaps with the sector shaft are removed. To prevent the rings from turning, we fix them by bending the flanges in the grooves of the crankcase. We assemble and install the mechanism in the reverse order.
Thus, adjusting the steering gear on a Gazelle car is an important repair measure that allows you to restore the functionality of driving a vehicle, significantly increasing the safety of passengers while driving.
VIDEO
The need for adjustment arises in the event of an increase in the free play of the steering wheel over 20 ° for buses and 25 ° for other vehicle modifications (see Checking the technical condition of the steering).
... and shaking the steering gear screw by the fork fixed on it, we check the axial or radial clearance in the steering gear bearings. The backlash should not be felt.
. removing the plastic cover...
...and a foam seal.
With the “13” head, we unscrew the four bolts securing the upper cover of the crankcase of the mechanism.
Prying off with a screwdriver, remove the cover ...
... and remove one of the shims.
removing the plastic cover...
Using pliers, remove the spring rings from both sides of the mechanism housing.
With a thin beard with a blunt end, we straighten the holes on the edge of the outer ring of the sector shaft bearings.
Using a special key, we turn the eccentric outer rings of the bearings in the crankcase holes clockwise from the side of the splined end of the sector shaft.
ATTENTION
The moment of turning the screw on the adjusted mechanism should be 10–18 kgf.cm. We fix the eccentric rings from turning by bending their flanges into the crankcase holes with a beard.
Commercial vehicles do not need to have on board a lot of equipment that contributes to comfortable and safe driving. Although it was possible even for a deep scoop. Recall at least the RAF 2203, which was considered almost a model of comfort for a minibus. Despite the fact that it was assembled completely on the nodes and assemblies of the Volga. This icon of Soviet minibuses and ambulances is about time to erect a monument - the RAF not only somehow did not deteriorate from congenital Volga diseases, it managed to become an absolutely self-sufficient and comfortable vehicle.
In the photo, RAF 2203, which was considered a model of comfort under the USSR
What happened, then passed, and GAZ 3302 GAZelle came to replace Rafik, on which they had high hopes. As a result, for 20 years of production, it has remained a gasoline tractor with a steering wheel and a gearbox poker, having managed to pick up incurable diseases with the most primitive design. Since there is no choice at all in this price segment, the car enjoys forced popularity and strained love from drivers.
Like the whole car, the GAZelle steering mechanism does not suffer from the sophistication of the design, but many believe that this is for the best. Regardless of whether the car is with power steering or without power steering, repair and steering adjustment are extremely simple and do not require deep encyclopedic knowledge and special tools from the driver. The very minimum of both - and you can go further.
Video review of GAZelle 3302
VIDEO It is still different from the prehistoric GAZ worm-roller gearboxes, and even has its positive aspects. The most pleasant feature from the point of view of car architecture is that the GAZelle gearbox mechanism is quite compact and at the same time has good efficiency. What is especially noticeable on cars without power steering is that driving even a loaded car does not require the use of brute physical force. The designers achieved this by using rolling instead of sliding. It cannot be said that this introduction brought revolutionary changes to the global auto industry at the end of the 20th century, but the steering wheel became noticeably lighter.This made it possible to increase the resource of the entire assembly, since it does not wear out as intensively as a worm pair, and rarely requires adjustment.
Not without flaws, although the designers have nothing to do with it. A working pair of screw / ball nut is a non-dismantling element, and in the first 10-15 years of the car's production, it was quite difficult to find a replacement pair. Now this stuff is enough, so replacing a working pair can cost 5-6 thousand rubles. Adjusting the steering gear involves its complete dismantling, which also does not cause delight among users. Moreover, to adjust the gap, in addition to the key of a special profile, even and skillful hands are also required, since the bearings can be skewed in no time if you do not use a torque wrench.
In the GAZelle, control does not require the use of brute physical force, even if the car is loaded
But the main surprise for the driver who decides to adjust or repair the gearbox is the dismantling of the bipod. This is not hellish work, but in the cold, dismantling the bipod can cause some discomfort.
From a good life, no one wants to remove the steering gear with their own hands, and the reasons for this must be more than good. Basically, this is necessary if the steering wheel is noticeably heavier, characteristic knocks appear in the gearbox housing, or there is a clear lubricant leak. The gearbox always sweats, but if the leak is too active, then the replacement of the seals shines. In this case, it is necessary to check the condition of the shaft and, if necessary, remove traces of corrosion by grinding.
You can make adjustments without completely dismantling the gearbox, but it will be calmer if you still remove it and inspect it carefully.
VIDEO For the curious or for those in a hurry, we present the technology for dismantling the gearbox from under the hood:
Loosen the front wheel mount.
We hang the front axle on a stand and remove the wheels.
We turn the steering wheel all the way to the right and from under the hood we knock out the steering rod with fittings that are suitable in length.
We do the same on the left.
From under the hood we remove the gearbox along with the bipod, which is more convenient to remove on a workbench.
When the gearbox is in our hands, we can repair it. Replacing parts should not present any difficulties, since the gearbox is extremely simple and understandable, and you need to pay some attention to the adjustment and refer to the factory adjustment data. They are also extremely simple.
For cargo GAZelles, the allowable backlash is 25˚, for passenger ones - 20˚. According to factory tolerances, there can be no play in the bearings of the gearbox. Adjustment of the clearance in the screw bearings is carried out in a vise on a workbench. This is more comfortable. We remove the plastic protection and the foam rubber seal, then unscrew the four screws securing the cover, take out one of the shims, and then assemble everything in the reverse order. If there is play, repeat the operation to dismantle the gasket. So until full satisfaction and elimination of backlash on the bipod.
The permissible backlash of cargo GAZelles is 25˚
When the play on the bipod is fully selected, we get to the adjusting eccentric rings. You need to turn them alternately to avoid skew and with a certain effort - 10-18 kgf / cm. Adjustment is complete, now you can moisten the foam seal in gear oil, splined joints with grease and install the steering gear in place.
Gazelle until 2009. Removal and disassembly of the steering column
Disconnect the battery with the "mass" switch.
For the convenience of subsequent assembly, we set the front wheels to the position of rectilinear movement.
Using a screwdriver, remove the decorative trim.
Holding the steering wheel from turning, unscrew the nut with the “24” head.
We pull the steering wheel off the splines of the shaft with a special puller. If there is no puller, then we leave the nut on the thread flush with the end of the threaded part of the shaft.
With our knees we press the rim from below and with hammer blows on the end of the shaft through the brass mandrel we knock the steering wheel off the splines.
Finally unscrew the nut.
. remove the steering wheel from the shaft.
Using a slotted screwdriver, unscrew the two screws that tighten the steering column covers.
Move the steering column to its highest position (see "Adjusting the position of the steering column", p. 226).
We deflect the upper edge of the casing towards ourselves until its retainer leaves the column slot.
. and remove the cover by sliding it up.
The steering column can be removed from the vehicle separately by detaching the shaft cross from the steering column.
To do this, you have to knock the wedge out of the fork on the weight, which is inconvenient. Therefore, we recommend removing the column with the cardan shaft assembly.
In the engine compartment, use pliers to remove the cotter pin from the wedge hole.
Using the “13” key, unscrew the nut, leave it on the thread flush with the end of the wedge.
With a hammer through a brass mandrel, we knock out a wedge and, finally unscrewing the nut.
The steering of the car Gazelle GAZ-2705 consists of an adjustable steering column with a shaft and a wheel, a steering mechanism and a drive.
The design of the steering column (Fig. 19) allows you to change the position of the steering wheel in height and angle.
The steering gear Gazelle GAZ-2705 (Fig. 19), consisting of a screw with a ball nut 33 and a sector shaft, is mounted in an aluminum crankcase, which is attached to the left side member of the frame using a special bracket. The gear ratio of the steering mechanism is 23.09 (in the middle part).
Fig.19. Steering Gazelle GAZ-2705
1 - steering wheel; 2, 25 - steering column switch; 3 - retaining ring; 4 - washer; 5 - bearing; 6 - plastic bearing sleeve; 7 - ignition switch (lock); 8 - lower casing; 9 - steering column shaft; 10 - universal joint; 11 - wedge; 12 - nut: 13 - cardan shaft steering; 14 - cardan shaft seal; 15 - cardan bearing; 16 - bearing needles; 17 - retaining ring; 18 — steering mechanism; 19 - bipod shaft with a gear sector; 20 - grease fitting for cardan joint; 21 — a pipe of a steering column; 22— bracket; 23 — the handle of the mechanism of fixing the steering column; 24 - upper casing; 26 — a nut of fastening of a steering wheel; 27 - steering pad
The screw with a ball nut 33 is installed in the crankcase of the GAZ-2705 Gazelle steering mechanism on two angular contact bearings, the outer races of which are pressed into the crankcase and into the upper steering cover, and the inner races are pressed onto the steering gear screw.
The turning torque of the steering gear screw is adjusted using shims 30 installed under the steering gear cover.
When the screw rotates, the balls roll along a special channel, as a result of which the ball nut moves. The balls are made with high precision and differ from each other by no more than 4 microns.
The Gazelle GAZ-2705 steering mechanism assembly, consisting of a screw, a ball nut and a set of balls, cannot be dismantled. The high quality of workmanship and the precision of selected parts ensure easy and smooth operation of the steering mechanism.
With its teeth, the nut is engaged with the shaft - sector 41. The bipod shaft rotates on two cylindrical roller bearings, the inner race of which is the bipod shaft.
The sealing of the bipod shaft, as well as the cover of the steering mechanism Gazelle GAZ-2705, is carried out using rubber rings.
The fixation of the outer races of the bipod shaft bearings from axial movement is carried out with the help of retaining rings 38, and from angular movement - by means of punching the outer races into the crankcase holes closed by the plug 5.
The screw-ball nut of the steering gear Gazelle GAZ-2705 is connected to the steering column shaft with the help of a cardan shaft. The hinge forks are fastened to the shafts using wedge 48 (see Fig. 19).
The steering column is attached with four bolts to the clutch and brake pedal bracket. The steering column shaft rotates on two ball bearings. Adjustment of bearings of a shaft of a steering column in use is not required.
The steering wheel is mounted on the conical splines of the steering shaft and secured with a lock washer and nut.
The technical condition of the steering Gazelle GAZ-2705 can be approximately determined by the amount of free play (backlash) of the steering wheel.
The maintenance of the steering includes its inspection, checking the fastening of the units, the free play of the steering wheel, checking and adjusting the axial play in the propeller bearings, the clearance in the gearing of the steering gear, as well as lubrication according to the car's lubrication map.
When inspecting the steering of Gazelle GAZ-2705 cars, it is necessary to check the fastening of parts. All nuts and bolts of the steering wheel, steering column, steering gear case, cardan steering gear, bipod and steering link arms must be securely tightened to the torques shown below.
Then you should check the free play of the steering wheel in the position of the front wheels, corresponding to the movement of the car in a straight line. Steering wheel free play must not exceed 25°.
If, after checking all the elements of the steering and eliminating the identified malfunctions, the free play of the steering wheel is 25 ° or more, then it is necessary to adjust the tightening of the screw bearings and the gearing of the steering mechanism.
Steering adjustment Gazelle GAZ-2705
The position of the steering column of the Gazelle GAZ-2705 cars must be adjusted after adjusting the driver's seat relative to the control pedals. For this you need:
– turn the handle 23 (see Fig. 19) towards you and up, loosening the steering column fixation;
– Set the steering wheel to a comfortable position;
– fix the selected position of the steering column by turning the handle 23 down and away from you.
If it is necessary to adjust the mechanism for fixing the steering column Gazelle GAZ-2705, it is necessary:
– remove the lower casing 8 (see Fig. 19) by unscrewing two screws and releasing it from the lower retainer;
– remove the upper casing 24, bringing the dispenser as close as possible to the driver;
– after loosening the lock nut, tighten the bolt to a torque of 9.0–12.5 Nm (0.9–1.25 kg/cm);
- fix the locknut with a torque of 14-18 Nm (1.4-1.8 kg / cm), eliminating the bolt loosening;
– check column fixation;
- Install the top and bottom covers.
Steering gear adjustment Gazelle GAZ-2705
Fig.20. The steering mechanism of the car Gazelle GAZ-2705
B - rib on the top cover; C - risk at the end of the screw; 1 - crankcase; 2 - screw with ball nut; 3 - shaft-sector; 4 - filler plug; 5 - shims; 6 - nut; 7 - cotter pin; 8 - fork; 9 - cover; 10 - wedge; 11 - steering shaft seal; 12 - cardan shaft; 13 - sealing ring; 14 - retaining ring; 15 - the outer ring of the bearing of the shaft-sector; 16 - shaft-sector seal; 17 - cover; 18 - bipod; 19 - side cover; 20 - cork
Adjust the bearings when an axial or radial clearance appears in the bearings of the screw 2 (Fig. 20). To make sure that these clearances are present, you must:
– turn the steering wheel 21/2 turns from straight ahead to either side;
– shake the steering gear screw for the fixed fork by hand; if at the same time the screw will have axial or radial movement (play of the fork relative to the steering gear cover), then the screw bearings must be adjusted.
The steering gear Gazelle GAZ-2705 is adjusted in the following sequence:
– disconnect the bipod 18 and the fork of the shaft 12 of the steering wheel;
- unscrew the bolts securing the Gazelle GAZ-2705 steering mechanism to the bracket and remove the steering mechanism from the vehicle;
– drain the oil through the hole closed by plug 4;
– remove two plugs 20 on the crankcase;
– remove two covers 17 and 19 and sponge seal 16 of the sector shaft;
– remove the retaining ring 14;
- straighten the holes on the bearings of the shaft-sector with a beard and remove them with a puller, eliminating shocks and distortions on the bearing;
– unscrew the bolts securing the upper crankcase cover, remove the cover and take out one of the shims 5;
- Install the crankcase cover in place and check the torque of the screw in the bearings. The moment should be 0.4-0.8 Nm (4.0-8.0 kg/cm). In this case, no play of the screw should be felt;
– Install the sector shaft 3 and bearings, lubricating the seating surfaces and sealing rings with oil for the steering mechanism. During installation, the bearings must be directed eccentrically downwards (the shaft-sector is as far as possible from the ball nut).
Distortions during assembly are not allowed. Jamming of bearings on the sector shaft or crankcase indicates misalignment or incorrect orientation of the eccentricities
- adjust the engagement in the nut-sector pair;
- fix the bearings of the shaft-sector from rotation by bending the shoulder on the bearings into the holes on the crankcase;
- assemble the steering gear Gazelle GAZ-2705 in the reverse order;
– to establish the steering mechanism on the car;
– install bipod 18 and shaft yoke 12 (when installing wedge 10, nut 6 and washers should be on the side of the machined end on yoke 8).
The gap in the engagement of the working pair is considered acceptable if the play at the lower end of the bipod with the wheels positioned for moving in a straight line with the propeller bearings adjusted is not more than 0.3 mm.
If the backlash exceeds this value, then it is necessary to adjust the engagement of the nut-sector pair, since the operation of the car with excessive backlash leads to failure of the steering mechanism.
The sequence of operations for checking the engagement of a pair of steering gear Gazelle GAZ-2705 is as follows:
- put the wheels in the position of driving in a straight line and by turning the steering wheel, align the mark “C” (Fig. 20) on the end of the screw with the rib “B” of the top cover 9 (the mark “C” should be at the bottom);
- Disconnect the longitudinal steering rod from the bipod;
- shaking the bipod with your hand, determine the play at its end (in this case, the axial play of the screw should not be felt).
If the backlash of the steering arm Gazelle GAZ-2705 is more than 0.3 mm, adjust the engagement of the pair in the following order:
– to remove the steering mechanism from the car;
- remove two plugs 20 on the crankcase near the sector shaft;
- disconnect the bipod 18, remove the two covers 17 and 19 and the sponge seal 16 of the sector shaft;
- straighten the holes on the bearings of the shaft-sector 3 with a beard;
– adjust the engagement of the nut with the sector by simultaneously turning the outer rings 15 in the crankcase holes clockwise from the side of the splines on the sector shaft.
When adjusting, exclude the possibility of misalignment of the shaft-sector in the outer rings (incorrect orientation of the bearing eccentricities).
The torque of the screw on the adjusted mechanism should be 1-1.8 Nm (10-18 kg/cm):
- fix the bearings of the shaft-sector from rotation by bending the shoulder on the bearings into the holes on the crankcase;
- re-check the moment of rotation of the screw and the play at the end of the steering arm Gazelle GAZ-2705;
- install two plugs 20 on the crankcase, a sponge seal 16 of the shaft-sector (lubricating it and the shaft-sector under it with solid oil), two covers 17 and 19 and bipod 18;
– to establish the steering mechanism on the car;
- Connect the tie rod to the bipod and cotter pin.
The reliability and durability of Gazelle cars today is beyond doubt among the owners of commercial vehicles. However, in order to avoid problems during operation, it is necessary to approach the maintenance of the car with due attention. One of the nodes, the state of which should be constantly monitored, is the steering mechanism, because the safety of the driver and other road users directly depends on it.
This mechanism for a car of this brand consists of a steering wheel, a cardan shaft, a gear sector on the bipod shaft, bearings, oil seals and a column pipe. Some Gazelle models are equipped with power steering.
Other typical steering problems experienced by Gazelle owners include:
The appearance of backlash;
Knocking when turning the steering wheel;
Tight steering wheel, which requires more effort to turn than before;
Vibration when driving, steering wheel beating;
Power steering fluid leaks, which are easy to notice under the hood, and in especially severe cases on the pavement during a long stop;
Too noisy operation of the hydraulic booster.
Any repair operations related to the column begin with its analysis. You need to do the following:
The course of action when parsing the steering column removed in this way is as follows:
Disconnect the cardan shaft assembly;
Remove the ignition switch;
Disconnect the bolt and bushing;
Remove steering column bracket.
If there is play, steering column adjustment is required. Backlash for a Gazelle car is considered to be an increase in the freewheel angle to 25 degrees and above. During adjustment work on the removed shaft, the gap between the nut and the sector shaft is adjusted. Then the bipod stroke is adjusted so that it does not exceed 0.3 millimeters, that is, in fact, it should not be felt at all.
The most common source of steering column play is bearing failure, which wears out fairly quickly and needs to be replaced regularly. When replacing, proceed as follows:
The front bearing is removed from the shaft - the one that is located closest to the steering wheel;
Then they remove the rear - it's not so easy to do. The best option is to press it out using a hammer and a punch;
After that, the shaft is cleaned and damage is carefully assessed - if any, the part will need to be replaced as a whole;
Before installing new bearings, they are checked for defects, especially carefully examining their plastic bushings. Next, you need to check that the new elements easily rotate along the axis;
The bearings are carefully pressed into place. In this case, it is important to apply force only to the outer ring;
Upon completion of the installation, the shaft is mounted in the pipe, and the bearings are carefully fixed in the rings.
No less often on Gazelle, the gearbox needs to be adjusted or replaced entirely. Adjustment can be called a rather complicated operation - with a lack of experience, it is easy to warp the bearings, and this is fraught with much more serious problems in the steering mechanism.
However, it is not recommended to do this, since in case of any malfunctions it is advisable to conduct a thorough diagnosis of the gearbox. To do this, it is dismantled as follows:
The front wheels are hung and removed;
The steering wheel is turned to the right until it stops, then the steering rod is knocked out with fittings of a suitable length, then the operation is repeated on the left;
Next, the gearbox is removed from under the hood, and the bipod is removed from it on a workbench.
After cleaning the gearbox, it is carefully inspected for damage and damaged components are replaced.In this case, it is especially important to correctly adjust the gearbox bearings when replacing them.
After completing all the necessary operations, the gearbox is installed in place, after wetting the gasket in oil.
Spline connections must be treated with grease.
Video (click to play).
In general, many car owners prefer to carry out repair work on the Gazelle steering mechanism on their own. On the one hand, this is not difficult, on the other hand, the slightest distortion during adjustment threatens with serious problems with steering in the future. That is why, if you do not have enough experience, it is better to entrust the repair work to our specialists. Having repaired a huge number of Gazelles of various modifications, we can confidently say that we know everything about steering.
