Service of the Infiniti QX4 since 1996 of release
1. Introduction
2. Maintenance instruction
3. Routine maintenance
4. Engine
5. Cooling system and heating
6. Feed and control systems
7. Systems of start and charge
8. Transmission line
9. Brake system
10. Suspension bracket and steering
10.1. Specifications
10.2. Assessment of the general condition of components of a suspension bracket and steering of the car
10.3. Check of a state and replacement of spherical support of a forward suspension bracket
10.4. Check of a condition of steering drafts
10.5. Removal and installation of the cross lever of a forward suspension bracket
10.6. Adjustment of a pretightness of stupichny bearings of forward wheels
10.7. Removal, check of a state and installation of screw springs and rack-mount assemblies of a forward suspension bracket
10.8. Removal and installation of stupichny assembly and rotary fist
10.9. Removal, check of a state and installation of the forward stabilizer of cross stability
10:10. Replacement of stupichny bearings
10:11. Check of a condition of shock-absorbers and springs of a back suspension bracket
10:12. Removal and installation of components and assembly of a back suspension bracket
10:13. Removal, check of a state and installation of levers of a back suspension bracket
10:14. Removal, check of a state and installation of screw springs of a back suspension bracket
10:15. Removal and installation of shock-absorbers of a back suspension bracket
10:16. Removal and installation of the back stabilizer of cross stability
10:17. Removal, check of a state and installation of a cross jet bar of a back suspension bracket
10:18. Pumping of a hydraulic path of the steering drive
10:19. Checks and adjustments of a steering wheel
10:20. Check of effort of resistance to sliding of a lath of the steering mechanism
10:21. Adjustment of torque of a provorachivaniye of the leading gear wheel of the steering mechanism
10:22. Check of hydraulic pressure of GUR
10:23. Adjustment of effort of a tension of a belt of the drive of the steering pump
10:24. Removal and installation of reduktorny assembly
10:25. Removal and installation of assembly of the steering mechanism
10:26. Removal and installation of the steering pump
10:27. Removal and installation of a steering wheel
10:28. Removal and installation of assembly of the combined understeering switches
10:29. Removal and installation of the lock of ignition / blocking of a steering column
10:30. Removal, check of a state and installation of a steering column
10:31. Angles of installation of forward wheels
11. Body
12. Electric equipment
 












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10. Suspension bracket and steering

The basis of a design of a forward suspension bracket is made by McPherson's racks passed through screw springs. The top ends of a rack enter the basic bearings fixed on ledges of mudguards in a motive compartment of the car. The lower ends of racks fasten to rotary fists. Besides racks the forward suspension bracket is formed by the lower operating levers which external ends by means of spherical support are fixed in assemblies of rotary fists, internal axial bolts (the forward ends) and collars of axial plugs (the back ends) fasten to the car bottom. Besides, the stabilizer of cross stability is a part of a forward suspension bracket.


Design of a forward suspension bracket

1 — Remote laying
2 — the Pillow of the top support of a rack
3 — the Arm of the top support
4 — the Basic bearing
5 — the Top saddle of a screw spring
6 — the compression course Buffer
7 — the Screw spring
8 — the Polyurethane tube
9 — Assembly of a rack
10 — the Collar
11 — the Lower spherical support

12 — the Forelock
13 — the Cross lever of a suspension bracket
14 — the Rack of the stabilizer of cross stability
15 — the Bar of the stabilizer of cross stability
16 — the Plug
17 — the Arm
18 — the Rotary fist
19 — the Lock ring
20 — the Cover of the stupichny bearing
21 — the Power shaft
22 — the Protective cap of a nut


Back suspension bracket

The back suspension bracket is completely organized by means of the rigid not cutting bridge, four levers (two top and two lower), a cross jet bar and the stabilizer of cross stability. Racks are created by double-thread telescopic shock-absorbers of a cylindrical form and separately established screw springs.


Design of a back suspension bracket


Steering

All models are equipped with the hydrostrengthened steering mechanism of rack type connected to rotary fists by means of two cross steering drafts. The design of steering is presented on the following illustrations:


Design of the steering drive

1 — Assembly of the rack steering mechanism
2 — Nizhny Novgorod the cardan hinge

3 — Reduktornaya assembly
4 — Top cardan


Design of reduktorny assembly

1 — the Boot
2 — the Epiploon
3 — the Lock ring
4 — the Lock-nut
5 — the Back cover
6 — the Entrance shaft
7 — the Cap
8 — the Forward cover
9 — Sealing laying

10 — Reduktornaya assembly
11 — the Internal nut
12 — the Lock-nut
13 — the Epiploon
14 — the Boot
15 — the Sealing ring
16 — the Persistent bearing
17 — a bearing Holder
18 — the Output shaft


Design of the rack steering mechanism

1 — the Back cover
2 — the Casing of the leading shaft
3 — Sealing rings
4 — Assembly of the leading gear wheel
5 — the Sealing ring
6 — the Adjusting washer
7 — the Epiploon
8 — the Lock-nut
9 — the Adjusting screw
10 — Pruzhina
11 — the Holder
12 — the Case of rack transfer
13 — the Cuff
14 — the Steering rack
15 — the Sealing ring

16 — the Sealing ring
17 — the Sealing ring
18 — the Plug
19 — the Cuff
20 — the Lock ring
21 — the Face cover
22 — the Bandage tape
23 — the Protective cover
24 — the Bandage tape
25 — the Lock plate
26 — the Internal tip of steering draft
27 — Steering draft
28 — the External tip of steering draft
29 — the Forelock
30 — Tubes of a hydraulic path


Features of service of components of a suspension bracket and steering

Often in the course of service of components of a suspension bracket and the steering drive it is necessary to face fixture resistant to an otdavaniye. By Prikipaniye of elements of fixture it is connected with the fact that they are constantly subject to external influences, are in contact with water, dirt, a soot and the other substances promoting corrosion development. For the purpose of simplification of the procedure of an otdavaniye of its such "stuck" fixture it is necessary to impregnate with plentiful amount of the getting oil beforehand. Cleaning of open carving parts of fixture a rigid wire brush also promotes simplification of an otdavaniye of the rusted nuts. Sometimes, in especially hard cases, for the otpuskaniye which "stuck" bolts / nuts it is possible to use a drift. The drift rests against the region a bolt nut/head vent, then sharp blows with the hammer are struck to its opposite end. You watch that the drift did not break, try not to damage inexact blows a carving. Quite effective way is also warming up of fixture resistant to an otdavaniye and a torch of the blowtorch or a gas torch surrounding it component surfaces though authors of this manual also do not recommend to resort without extreme need to such technology in view of its potential danger connected with a possibility of ignition and risk of receiving burns. Different extenders, collars and pipe nozzles on them are intended for increase in torque at an otpuskaniye of fixture. However, you remember that it is not necessary to use such intensifying devices complete with the drive equipped with "graggers" — the risk of failure of the ratchet mechanism is too high. Sometimes the "stuck" fixture begins to give in after previously slightly it is tightened clockwise. All fixture which otpuskaniye demanded application of extraordinary measures at assembly is subject to replacement!

After an otdavaniye attentively check a condition of fixture and in case of need you make its replacement with elements of the same standard size. At assembly tighten elements of fixture of components of a suspension bracket and steering it is strict with the required effort.


Do not make attempts of a rikhtovka of the deformed components of a suspension bracket and steering at all - replace defective parts new!

As procedures of service of components of a suspension bracket are performed under the car, it is necessary to think in advance of opportunities of lifting the vehicle and its fixing in the lifted situation (prepare a reliable jack and props).

Do not perform any works under the car, the lifted situation fixed in only by means of a jack at all!


"on the page back
9.20. Check of serviceability of functioning of the relay of the electromagnetic valve of the hydraulic ABS modulator
on the following page"
10.1. Specifications




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