On the domestic Gazelle car, the rear axle is equipped with a separately modeled gearbox and a stamped-welded type crankcase. The last element has a box-shaped section, welded from shell-shaped steel plates. A back cover, a gearbox mounting amplifier, spring gaskets, shock-absorbing and rack-fixing brackets, a brake regulator, a trunnion with flanges are attached to them. It is used for mounting hubs and brake elements. The main transmission of the bridge and its differential are installed in the gear housing, bolted to the skeleton of the node under consideration.
Maintenance
In order for the rear axle to serve reliably and for a long time on the Gazelle car, it is recommended that several maintenance rules be observed. The main ones are the following.
It is necessary to control the absence of oil leak on the cuffs of the driving gear and wheel hub, as well as through the gasket of the gear housing and the flanges of the axle shafts, the filling and drain covers. It is worth noting that the appearance of condensation in these places does not indicate leakage, if there are no signs of drops falling.
It is necessary to check the oil level in the bridge crankcase, if necessary top up the working fluid.
Oil changes should be made according to a special card for the use of grease.
It is required to check the degree of tightening of the gearbox fixing bolts, half shafts and the adjustment of the wheel hub bearings.
Below is a diagram of the node under consideration.
Key Symptoms
Pay attention to the operation of the rear axle should be in the presence of at least one of the signs below:
- Increased noise and hum in working condition.
- Incorrect operation of the unit with differences (pulsating noise).
- The appearance of high-pitched sounds (howling).
- A loud knock in the area of the node under consideration when activating the accelerator on turns or when coasting.
- Constant non-standard sounds and crunching.
In addition, the Gazelle auto has a rear axle that needs repair if oil leaks through the crankcase, cuffs, or drain plugs.
Troubleshooting Methods
Below are the main malfunctions and how to eliminate them.
The fixing bolts or nuts of the driven gear, the crankcase are loosened - you need to tighten the fasteners.
Wear, appearance of play of gear or differential bearings - you need to check the condition of the elements, if necessary, replace them or adjust the interference fit.
Insufficient oil level or the use of an unsuitable fluid - replenish the level to normal or replace the oil with an appropriate option.
There are seizures, cracks, chips on bearings, gear teeth - replace defective parts.
Clogging of the breather - clean it.
Excessive wear of the elements - the issue is solved by installing new ones.
If the crankcase, gaskets or rear axle oil seal (Gazelle) is leaking, it is imperative to replace unsuitable parts.
Where to start disassembling and replacing
In order to repair the assembly in question and replace the faulty parts, it is necessary to disassemble the rear axle, which is quite a difficult and painstaking task. The following step-by-step instructions describe the dismantling steps:
- A special ring wrench unscrews the bolts (10 pcs.) Securing the gearbox.
- The gearbox is removed carefully so as not to damage the gasket (it is more convenient to carry out work on the stand).
- The flange of the pinion gear and cuff is removed, after which marks are placed on the location of the covers relative to the nuts of the bearings and the housing itself.
- The flange is removed with a cuff, using the key, the bolts of the locking plates that are removed are unscrewed.
- The cap of the bearing is unscrewed with a cap or socket wrench, after which they are dismantled.
- Using a screwdriver or key, the adjusting nuts are removed, then the satellite box.
- In the case of re-installing the same bearings, their outer rings are marked for installation in old places.
- To simplify the assembly, labels are also placed on the satellite box, after which the gear mounting bolts are unscrewed.
Further actions
Dismantling and replacing the rear axle ("Gazelle") continues with the following items:
- light blows of the hammer on the punch knock and the gear is removed from the box;
- using a special device or chisel, which is inserted between the end of the inner ring of the bearing and the differential box, the ring is shifted to the side and removed through the resulting gap with mounting blades (screwdrivers);
- marks are placed on the location of the differentials with respect to the satellite axles, the fasteners are unscrewed;
- the box is disconnected by tapping the soft pound with a hammer;
- semi-axial gears and thrust washers are removed;
- the drive gear is dismantled in a manner similar to opening the box;
- the adjusting and outer bearing rings are removed.
The rear axle shank (Gazelle) and other elements must not have cracks, chips, or deformations. All worn parts must be replaced. Before assembling the spare part, it is necessary to lubricate and carry out the installation procedure in the mirror order.
Recommendations
After a hundred thousand kilometers, experts recommend replacing the bearings in the assembly in question, regardless of their condition. If there are signs of a malfunction, and the repair of the rear axle (Gazelle) is delayed, in order to avoid more serious damage, several rules should be observed.
Firstly, do not overload the car, especially in the summer. Secondly, to minimize the use of first gear, riding on which is particularly negatively affects the gearbox. In addition, it is necessary to avoid a sharp start, steep and prolonged climbs.
The rear axle of the Gazelle car will last longer if you buy and use only high-quality and recommended oil and replace it at least every 35-40 thousand kilometers. Timely elimination of backlash, avoiding slipping on snow or mud also contribute to increasing the service life of this unit.