5.1.7. Dismantling, assembly and installation of the steering mechanism

Fig. 5.35. Components of the steering mechanism



Check and adjustment before dismantling

Fig. 5.36. Fixing of the steering mechanism in a vice


Establish on sponges of a vice of an overlay from soft metal (brass or aluminum plates) for prevention of damage of the steering mechanism and fix the last in a vice (fig. 5.36).

ATTENTION
At installation of the steering mechanism in a vice fix it so that sponges of a vice совмещалисьс a fastening bracket installation site. Other way of fastening in a vice can lead to damage of the steering mechanism.

Check of the general moment of rotation of the leading gear wheel of the steering mechanism (preliminary tightness of a shaft of the leading gear wheel of the steering mechanism)

Fig. 5.37. Rotation of a gear wheel of the rack steering mechanism


For check of the general moment of rotation of the leading gear wheel of the steering mechanism by means of a special key rotate a gear wheel of the rack steering mechanism within one turn during 4–6 with (fig. 5.37).
General moment of rotation of the leading gear wheel of the steering mechanism (nominal rate): 0,6–1,3 N · m.

NOTE
Measure the moment of rotation of the conducting gear wheel at a full speed of a steering rack.

If the measured size does not correspond to nominal rate, then at first adjust the provision of a cover of an emphasis of a steering rack and then again check the general moment of rotation of the leading gear wheel of the steering mechanism.
If the general moment of rotation of the leading gear wheel does not manage to be adjusted, check an emphasis cover, a spring of an emphasis and an emphasis of a steering rack and if necessary replace details.

Check of resistance to rotation of the hinge of steering draft
Make 10 strong turns of a tip of steering draft.

Fig. 5.38. Measurement of resistance to rotation of the hinge of steering draft


By means of a spring dynamometer measure resistance to rotation of the hinge of steering draft (fig. 5.38).
Moment of resistance to rotation of the hinge of steering draft (nominal rate): 8–22 N (2–5 N · м).
If the measured size exceeds nominal rate, replace steering draft assembled.

ATTENTION
If the measured size is less than nominal rate, however steering draft turns smoothly, without excessive side play, then such tip is suitable for operation. If the measured size less than 4,3 N (1 N · l), replace steering draft assembled.

Check of a protective cover
Check a protective cover for absence of damage or deteriorations in a state.
Check correctness of fastening of a protective cover.
If obnaruzhna defects of a protective cover, replace it new.

Dismantling

Fig. 5.39. Removal of a tip of steering draft


Remove a tip from steering draft (fig. 5.39).

Fig. 5.40. Removal of a protective cover of the spherical hinge


Clamp a tip of steering draft in a vice, then remove a protective cover of the spherical hinge (fig. 5.40).

Fig. 5.41. Removal of a big collar of fastening of a protective cover of steering draft


Remove a big collar of fastening of a protective cover of steering draft (fig. 5.41).

Fig. 5.42. Removal of a small collar of fastening of a protective cover of steering draft


Remove a small collar of fastening of a protective cover of steering draft (fig. 5.42).
Pull together a protective cover from the case of the steering mechanism on steering draft.

NOTE
When replacing a protective cover be convinced of lack of a rust on a lath of the steering mechanism.

Disconnect tubes of the steering mechanism from the case of the valve and the steering mechanism and remove them.
Slowly moving a lath, merge working liquid from the case of the steering mechanism.

Fig. 5.43. Raschekanivany lock washer


By means of a chisel to a raschekanta a lock washer which fixes steering draft and a lath of the steering mechanism (fig. 5.43).

Fig. 5.44. Removal of steering draft from a lath of the steering mechanism


Remove steering draft from a lath of the steering mechanism (fig. 5.44).

ATTENTION
Be careful at removal of steering draft from a lath of the steering mechanism, do not bend a lath.


Fig. 5.45. Removal of a lock-nut of a cover of an emphasis of a lath


Turn off a lock-nut of a cover of an emphasis of a lath (fig. 5.45).

Fig. 5.46. Removal of covers of an emphasis of a lath


Uncover a lath emphasis by means of a tool head on 14 mm (fig. 5.46).

Fig. 5.47. Lath components


Remove a lath emphasis spring, a lath emphasis, a cover of an emphasis of a lath and an insert from the case of the steering mechanism (fig. 5.47).

Fig. 5.48. Bolts of fastening of the case of the valve


Turn off two bolts of fastening and remove the valve case assembled (fig. 5.48).

Fig. 5.49. Turn of the limiter of the course of a lath clockwise


Turn the lath course limiter clockwise until the end of a lock ring does not leave a groove of the case of the steering mechanism (fig. 5.49).

Fig. 5.50. Removal of a lock ring


As soon as the end of a lock ring leaves a groove of the case of the steering mechanism, turn the lath course limiter counterclockwise and take a lock ring (fig. 5.50).

Fig. 5.51. Removal of ring laying


Remove ring laying from the basic plug of a lath (fig. 5.51).

Fig. 5.52. Removal of an epiploon


Remove an epiploon from the basic plug of a lath (fig. 5.52).

Fig. 5.53. Extraction of the leading gear wheel and the valve assembled from the valve case


Easy percussions of the hammer with plastic brisk accurately take the leading gear wheel and the valve assembled from the case of the valve (fig. 5.53).
By means of the special tool take an epiploon and the ball bearing from the valve case.

ATTENTION
Be careful, do not damage the internal surface of the cylinder of the leading gear wheel in the case of the steering mechanism.


Fig. 5.54. Extraction of an epiploon from the case of the steering mechanism


By means of the special tool take an epiploon from the case of the steering mechanism (fig. 5.54).

ATTENTION
Be ostoronzha, do not damage the internal surface of the cylinder of a lath in the case of the steering mechanism.

Check of a lath of the steering mechanism
Check lack of wear or damages on teeths of a steering rack.
Check a contact surface under installation of an epiploon for lack of excessive wear or damage.

Fig. 5.55. Steering rack


Check straightforwardness of a steering rack (lack of a bend or twisting) (fig. 5.55).
Check a sealing ring for lack of excessive wear or damage.
Check an epiploon for lack of excessive wear or damage.

Fig. 5.56. Leading gear wheel


Check teeths of the leading gear wheel for lack of wear or damages (fig. 5.56).
Check a contact surface under installation of an epiploon for lack of excessive wear or damage.
Check a sealing ring for lack of excessive wear or damage.
Check an epiploon for lack of excessive wear or damage.
Check smoothness of rotation and lack of extraneous noises during the operation of bearings.
Check lack of an excessive side play in bearings.
Check lack of loss of needles from the needle bearing.
Check absence of damage on the internal surface of the cylinder of the case of the steering mechanism.
Check protective covers for lack of wear, cracks and gaps.

Assembly
Apply the recommended working PSF-3 liquid on a working edge of an epiploon of a lath of the steering mechanism on all its circle.

Fig. 5.57. Scheme of installation of a restrictive washer and epiploon


Install a restrictive washer and an epiploon in the case of the steering mechanism, as shown in the figure 5.57.
Apply the recommended working liquid on an epiploon of the basic plug of a lath of the steering mechanism on all its circle.

Fig. 5.58. The scheme of installation of an epiploon on the basic plug of a lath


Install an epiploon on the basic plug of a lath (fig. 5.58).
Apply the recommended working liquid on ring laying and install it on the basic plug of a lath of the steering mechanism.
Apply the recommended jellied lubricant on teeths of a lath of the steering mechanism.
The recommended lubricant: SAE J310, NLGI No. 2 of general purpose.

Fig. 5.59. Air vent



NOTE
Do not fill with lubricant an air vent of a lath of the steering mechanism (fig. 5.59).


Fig. 5.60. Utanovka of lath components


Insert a lath into the case of the steering mechanism, then install the basic plug of a lath and the limiter of the course of a lath (fig. 5.60).

Fig. 5.61. Scheme of installation of a lock ring


Insert a lock ring into a lath course limiter opening through an opening in the case of the steering mechanism when openings are combined. Turn the limiter of the course of a lath and finally record a lock ring (fig. 5.61).

ATTENTION
After installation of a lock ring its ends should not be visible through an opening in the case of the steering mechanism.


Fig. 5.62. Installation of an epiploon and the ball bearing in the valve case


By means of the special tool install an epiploon and the ball bearing in the case of the valve (fig. 5.62).

Fig. 5.63. Leading gear wheel


Apply the recommended working liquid on the leading gear wheel and the valve assembled, then install them in the case of the valve (fig. 5.63).

Fig. 5.64. Installation of the case of the valve and ring laying on the case of the steering mechanism


Apply the recommended working liquid on an epiploon and install it in the case of the steering mechanism. Install the valve case assembled and ring laying on the case of the steering mechanism (fig. 5.64).
Establish a new lock washer and steering draft. Fuller edges of a lock washer in two places on steering draft.

NOTE
Bring in two places short moustaches of a lock washer to dredging of steering draft.


Fig. 5.65. Scheme of installation of a lock washer


Before installation always replace a lock washer new (fig. 5.65).

Fig. 5.66. Assembly of a lath


Install an insert, an emphasis, a spring and a cover of an emphasis of a lath in the case of the steering mechanism in the sequence shown in the figure 5.66.
Apply the sealant (semydrying sealant) turning into "rubber" on a carving part of a cover of an emphasis of a lath before its installation.

Fig. 5.67. Installation of a cover of an emphasis of a lath


Establish a lath in the central situation, then insert a lath emphasis cover into the case of the steering mechanism. By means of the special tool tighten a lath emphasis cover the moment of 15 N · m (fig. 5.67).
Turn out a lath emphasis cover on 30-60 ° and tighten a lath emphasis cover lock-nut the nominal moment of 50-70 N · m.
Establish and delay fastening of tubes of the steering mechanism the nominal moment, then establish into place rubber support by means of special glue (adhesive).
Apply the recommended silicone lubricant in an installation site of a small collar of a protective cover on steering draft (in a flute on draft).
Establish a new big collar of a protective cover of steering draft.

NOTE
Before installation of a protective cover of steering draft always replace new a big collar of a protective cover.


Fig. 5.68. Installation of a protective cover of steering draft


Establish a protective cover of steering draft into place, without allowing its twisting (fig. 5.68).

Fig. 5.69. Places of putting lubricant


Fill an internal cavity of a protective cover of the spherical hinge of a tip of steering draft (A) and a working edge of the spherical hinge (B) with the recommended lubricant (fig. 5.69).
Apply the recommended sealant on a sealing edge of a protective cover and record it on the spherical hinge by means of a collar.
The recommended lubricant:
And – POLY LUB GLY 801K or equivalent;
B – SHOWA SUNLIGHT MB2 or equivalent.
The recommended sealant for a sealing edge of a protective cover: THREE BOND.

Fig. 5.70. Lock-nut of a tip of steering draft


Wrap the left and right tips of steering drafts so that length of the acting part of draft was identical at the left and on the right and corresponded to nominal rate. Record situation a lock-nut (fig. 5.70).
Length of the acting part of steering draft: 204,5 mm.
Check the general moment of rotation of the leading gear wheel of the steering mechanism (a preliminary tightness of a shaft of the leading gear wheel of the steering mechanism).

Installation

Fig. 5.71. Installation of the steering mechanism


Install the steering mechanism assembled through an arch of the right wheel (fig. 5.71).
Establish a basic plate of a protective cover of a shaft of steering.
Connect a protective cover of a shaft of steering to its basic plate by means of a new tape collar.
Connect a shaft of steering and a steering column assembled to the steering mechanism assembled.
Establish other details as it should be, the return to removal.
Remove air from a hydraulic system of the amplifier of steering.