5.2. Repair

At repair of steering use these tab. 18.

Removal of the mechanism of steering
 Removal of the steering mechanism
1. In the presence of the hydraulic booster disconnect hoses from the steering mechanism, having turned off union bolts, and fix them so that to prevent a full effluence of oil from a hydraulic system, or merge oil in pure ware.
2. Turn off a nut of a bolt of fastening of a fork of the cardan hinge, take a bolt, remove a fork from an entrance shaft of the mechanism.
3. Rasshplintuyte also turn off a nut of fastening of a finger of the hinge of thirst of a bipod for a bipod, take a finger from a bipod opening.
4. Turn off bolts of fastening of the steering mechanism to a longeron and remove the steering mechanism.
 Removal of the driveshaft of steering
1. Turn off a nut of a bolt of fastening of a fork of the lower cardan hinge, take a bolt, remove a fork from an entrance shaft of the steering mechanism.
2. Carefully, without allowing damage of the sealant established on a body take shlitsevy a shaft with the lower hinge.
3. Remove the overlay of the dashboard closing a dashboard aperture under a steering column.
4. Turn off a nut of fastening of a fork of the top hinge to a shaft of a steering column, take a bolt.
5. Remove the shlitsevy plug of the driveshaft with the top hinge.
 Removal of a steering wheel
1. Unscrew three screws of fastening of the top overlay of a steering wheel (from below a steering wheel on spokes).
2. Remove a slip.
3. Turn off a nut of fastening of a steering wheel.
4. Remove a steering wheel, using a stripper.
 Removal of a steering column with the mechanism of adjustment of a tilt angle
1. Remove a steering wheel and the driveshaft (see above).
2. Remove casings of a steering column.
3. Disconnect understeering switches from their connector.
4. Turn off a bolt of fastening of a connector of switches and remove a connector from a column.
5. Disconnect electric equipment wires from the ignition lock.
6. Turn off four bolts of fastening of a steering column to an arm.
7. Remove a steering column.
 Dismantling of the mechanism of adjustment of a tilt angle of a column (it is possible without removal of a column
from the car)
1. Remove casings of a steering column, transfer a column to extreme top situation for what press a control lever a tilt angle of a steering column down and, holding with a hand a steering wheel, carefully move a column up to an emphasis, then release the lever.
2. Remove the overlay of the dashboard closing a dashboard aperture from below.
3. Remove an adjustment lever spring.
4. Having turned off nuts, remove a comb and the lever of the mechanism of adjustment.

The steering mechanism with transfer a worm roller (without hydraulic booster)
 Dismantling
1. Turn off a nut and remove a lock washer from the adjusting screw.
2. Turn off bolts of fastening of a side cover of a case.
3. Easy blows of a copper or aluminum drift to an end face of a shaft of a bipod take out a bipod shaft together with a roller and a cover and carefully remove laying.
4. Vvertyvaniyem the adjusting screw in a side cover of a case remove a side cover and the adjusting screw from a bipod shaft.
5. Turn off bolts of fastening of the lower cover of a case and remove a cover together with laying, an external ring of the lower bearing and a separator with rollers.
6. Take out from a case a shaft with a worm in collecting and a separator with rollers of the top bearing.
Press off an external ring of the top bearing, a cuff of a shaft of the steering mechanism, a cuff of a shaft of a bipod and the plug of a shaft of a bipod from a case of the steering mechanism only in case of their replacement.
 Assessment of technical condition of details
After dismantling carefully wash out and examine each detail.
At emergence on surfaces of a worm of the steering mechanism of peelings of the tempered layer in the form of sinks, and also at their considerable wear replace details.
Replace bearings of a worm new if for elimination of an axial side play it is necessary to remove all adjusting laying or if working surfaces of rings and rollers are damaged.
If on working surfaces of a roller of a shaft of a bipod there are sinks, cracks, dents or the gap in ball-bearings or in landing to axes was formed, then ream an axis head, beat out an axis, take a roller. Insert a new roller and an axis into a shaft groove. Fastening by electric welding on a shaft of a bipod of an old axis – from the party of the reamed head, and a new axis – on both sides is allowed. At the same time do not allow a roller overheat.
Replace a bipod shaft if its vents are twisted.
Replace the bronze plug of a case at considerable unilateral wear. After a press fitting in a case of the new plug iron it a brooch to diameter of 32+0,027 mm.
 Assembly
Execute assembly in the return order taking into account the following:
1. In case of replacement of a worm at napressovke him on a shaft it is necessary that high vents of a worm coincided with a shponochny groove of a shaft. Discrepancy of an end face of a shaft with a bore end face on a worm should not exceed 0,25 mm.
2. The roller of a shaft of a bipod has to be turned freely from a hand. Grease a cylindrical part of a shaft of a bipod and a roller at installation in a case with liquid lubricant. Cylindrical and conic bearings, external surfaces of a worm and epiploons grease with Litol-24 lubricant.
3. You carry out an inhaling of bearings of a worm and adjustment of gearing of a roller with a worm as it is specified in the section "Adjustment of the Steering Worm Roller Mechanism".

The steering mechanism with the hydraulic booster
 Dismantling
1. Merge oil from the mechanism, scrolling an entrance shaft from an emphasis against the stop.
2. By means of a stripper remove a bipod from a bipod shaft.
3. Uncover top and lower protective bipod shaft support.
4. Remove lock rings of support of a shaft of a bipod and lock washers.
5. Smooth pressing of a press the lower end of a shaft of a bipod to a vypressuyta a bipod shaft together with the top support, without taking a bipod shaft from the lower support completely.
6. Remove from a bipod shaft the top support with rollers, without scattering rollers.
7. Smooth pressing of a press the top end of a shaft of a bipod to a vypressuyta lower support of a shaft of a bipod.
8. Remove from a bipod shaft the lower support with rollers, take a bipod shaft.
9. Take sealing rings of support of a shaft of a bipod from case flutes.
10. Turn off bolts of fastening of the case of the distributor.
11. Carefully, without distortions remove the distributor case.
12. Take from a case the screw with the hydraulic valve and a lath piston.
13. Take out from a case a bearing glass with the bearing and a nut.
14. Unbend petals of an overlay of a sharikovod from sides of bolts.
15. Turn off bolts of fastening of an overlay of a sharikovod.
16. Take шариковод from a lath piston.
17. Turn a lath piston openings under шариковод down and, turning the screw by hand, pour out balls.
18. Take the screw from a lath piston.
19. Carefully to a vypressuyta pin of a sleeve and pin of the torsion.
20. By means of special adaptation remove a rotor with a sleeve and the torsion from the screw.
21. Carefully remove a sleeve from a rotor.
22. Take the torsion from a rotor. Take out the sealing rings and a cuff installed in the case of the distributor and in a lath piston only in case of their replacement.
 Assessment of technical condition of details
After dismantling carefully wash out, dry compressed air and examine details.
At emergence on the working surface of the screw, a lath piston, a shaft of a bipod, support of a shaft of a bipod or bodies of swing of bearings of peelings of the tempered layer in the form of sinks, and also at their considerable wear replace details.
Replace a bipod shaft if its vents are twisted.
Replace rubber sealing rings at detection of damages or change of a form of cross section (rings have to be round), visible with the naked eye.
When replacing the screw or a lath piston of a detail have to be replaced only with details of one group. Number of group is marked at an end face of the screw and a lath piston.
Details of the hydraulic booster (rotor, sleeve and the torsion) are selected at manufacturer individually therefore and can be replaced only with a set. At the same time adjustment at the special stand is necessary.
Support of a shaft have to be replaced together with rollers.
 Assembly
You make assembly as it should be, the return to dismantling, taking into account the following.
Transfer assembly ball screw. The balls diameter (7,144±0,014) mm sorted on seven groups on diameter through are applied to assembly of the shariko-screw gear
0,004 mm. For assembly all balls have to be one group. Apply a tube batcher (10х1 mm 275 mm long) to simplification of assembly.
1. Insert the screw into an opening of a lath piston and combine the first round of a screw flute with an opening in a lath piston under шариковод, closest to a screw flange.
2. Insert the tube batcher filled with balls into an opening of a sharikovod so that balls began to fill the screw channel.
3. For filling of the screw channel smoothly turn the screw counterclockwise before emergence of the first ball in the second opening under шариковод.
4. Fill with the remained balls a trench of a sharikovod. For prevention of dispersal of balls densely grease a trench with jellied Litol-24 lubricant.
5. Insert the trench filled with balls together with the second trench into an opening under шариковод in a lath piston.
6. Holding шариковод from drop-out, check the moment of a provorachivaniye of the screw which has to be 0,5–0,8 N · m (0,05–0,08 kgfs · м). Rotation have to be smooth, without breakthroughs and jammings. If the moment of rotation is more or less demanded, replace all set of balls with a set of smaller or bigger diameter respectively. Mixing of balls of different dimensional groups, and also different parties of one dimensional group is not allowed.
7. Establish an overlay of a sharikovod, wrap bolts of its fastening and stop them, having unbent a slip petal on a side of each bolt.
Installation of ftoroplastovy sealing rings. Ftoroplastovy sealing rings are applied to consolidation of mobile connections: distributor sleeve case, lath-piston-case, screw-lath-piston. In support of a shaft of a bipod the protective ftoroplastovy ring together with rubber is applied. Repeated installation of ftoroplastovy rings is not allowed.
Internal rings are established with their preliminary deflection inside, an external ring – with preliminary stretching on a conic mandrel.
After installation of a ring it is necessary to calibrate special mandrels with endurance on a mandrel within 30 min.
                           The Diameter of a Mandrel connection for calibration of a ring, mm
Sleeve case                                   33,9 (shaft)
distributor       
                         Screw-lath-piston 17 (shaft)
Lath-piston-case                      72 (opening)
Shaft of a bipod support of a shaft of a bipod            36
(protective ring)

You carry out further assembly of the steering mechanism in the following order:

Fig. 254. The steering mechanism with the hydraulic booster: 1 – nut; 2, 19, 21, 22, 35, 39 – sealing rings; 3 – glass; 4, 10 – persistent bearings; 5, 6 – a sealant; 7 – lath piston; 8 – screw;
9 – case; 11 – union of a delivery hose; 12 – union of a drain hose; 13 – sleeve; 14 – cuff; 15 – torsion; 16, 38 – pins; 17 – шариковод; 18 – balls; 20 – the channel in a case; 23 – bipod;
24 – bipod nut; 25 – the cover is protective lower; 26 – lock rings; 27 – adjusting washers; 28 – bipod shaft support; 29 – roller; 30 – bipod shaft; 31 – the cover is protective top; 32 – rotor; 33 – protective cap; 34 – distributor case; 36 – the channel in the distributor case; 37 – a bolt of fastening of the case of the distributor to a case


1. In a glass 3 (see fig. 254) establish a bearing 4 disk, a separator with rollers and a ring.
2. In a case establish a rubber sealing ring 2 and a nut 1 so that the ledge of a nut coincided with a pro-point at the bottom of a case.
3. Screw a glass in a nut on 2–3 turns.
4. Assembled with the screw, a rotor and a sleeve establish a lath piston in a case so that the ledge of the screw entered a bearing ring opening, and teeths of a lath piston were parallel to a bipod shaft axis.
5. Install the roller bearing 10 on the screw.
6. Install the case 34 distributors, fix it by bolts 37.
7. Adjust a tightness in screw bearings (see item 2 of the section "Adjustment of the Steering Mechanism with the Hydraulic Booster").
8. Turning an entrance shaft and holding a lath piston from a pro-collar, establish a lath piston so that the average hollow of a lath was opposite to the center of an opening under a bipod shaft. Establish rubber rings 21.
9. On a shaft of the 30th bipod establish a support 28 with rollers 29 and sealing rings 22 so that the tag on a support settled down opposite to average tooth of the sector of a shaft of a bipod.
10. Insert into a case a bipod shaft with a support so that average tooth of the sector entered an average hollow of a lath and press a support.
11. Carefully, without allowing dispersal of rollers, press the second support of a shaft of a bipod.
12. Adjust gearing of the sector of teeths of a shaft of a bipod and lath (see item 3 of the section "Adjustment of the Steering Mechanism with the Hydraulic Booster").

Removal, dismantling and assembly of cross steering draft
Perform works on removal and dismantling in the following sequence:
1. Rasshplintuyte of a nut of fastening of fingers of a steering trapeze.
2. Turn off nuts and vypressuyte adaptation fingers from levers.

Fig. 252. Hinge of steering drafts: 1 – cap;
2 – spring; 3 – heel; 4 – the washer is spherical lower; 5 – the washer is spherical top; 6 – protective ring; 7 – spring cap; 8 – forelock; 9, 13 – a nut; 10 – spherical finger; 11 – cracker;
12 – tip; 14 – draft


3. Take off from fingers 10 (see fig. 252) spring caps 7, rubber protective rings 6 and spherical washers 4 and 5.

Fig. 255. Draft of a steering trapeze: 1 – a nut with the left carving; 2 – adjusting union; 3 – a nut with the right carving; 4 – tip


4. Fix draft in a vice, turn off lock nuts of 1 (fig. 255) and 3, turn out tips 4 and the adjusting union 2.
5. Turn off a carving cap 1 (see fig. 252) a tip and take out a spring 2, a heel 3, a finger 10 and a cracker 11.
You carry out assembly of draft in the return order.
Replace a finger complete with a cracker. It is not recommended to replace only a finger as the sphere of a cracker wears out unevenly and when replacing one finger it is not possible to achieve good interface of spheres of a finger and a cracker.
Before assembly grease hinge details as directed with tab. 1.
At installation of a carving cap wrap it to an emphasis, and then turn off on 1/2 turns and in this situation to a zakernita.
Removal, dismantling and assembly of draft of a bipod is carried out similarly.