Citroën:: Xantia:: Running gear and steering

13. Running gear and steering

Specifications

Angles of installation of forward wheels

Convergence, mm	0 ÷ 30 (0 °00' ÷ 0 °00') divergence
Corner of a longitudinal inclination of an axis of turn of a wheel (выбег)
• Models with the manual drive of the steering mechanism	1 °
• The models equipped with system of hydrostrengthening of a wheel	3 °
Disorder (to adjustment is not subject)	0 °00' ± 30 °
Corner of a cross inclination of an axis of turn of a wheel (to adjustment is not subject)	13 °20'

Angles of installation of back wheels

Convergence, mm (to adjustment is not subject)	1.0 ÷ 6.0 (0 °10' ÷ 0 °50')
Disorder	1 °15' ± 20 ° (negative)

Road gleam

Height of a road gleam of a front of the car, mm	155.0⁺⁷,^{_{155.0 - 10}}
Height of a road gleam of a back of the car, mm	420.0⁺⁷,^{_{420.0 - 10}}

Suspension bracket of forward wheels

Diameter of the stabilizer of cross stability, mm
All models, except equipped with the RFY series engine (16 valves)	22.0
The models equipped with the RFY series engine	23.0
Gas pressure in spherical receivers, bar
Except the models equipped with the RFY series engine	^{70 +5, 70 - 20}
The models equipped with the RFY series engine	^{55 +5, 55 - 20}
Models with a hydraulic suspension bracket
• Models of 2.0 l (with 8-valvate engines)	^{50 +5, 50 - 20}
• Models with 16-valvate engines (RFY)	^{70 +5, 70 - 20}
Volume of spherical receivers of a hydraulic suspension bracket, cm³	400
Volume of additional spherical receivers of a suspension bracket (hydroactive suspension bracket), cm³	500
Diameter of the cylinder of a hydraulic actuator of a suspension bracket, mm	40.0

Suspension bracket of back wheels

Diameter of the stabilizer of cross stability, mm
All models, except equipped with the RFY series engine (16 valves)	21.0
The models equipped with the RFY series engine	22.0
Gas pressure in spherical receivers, bar
Except the models equipped with the RFY series engine	^{40 +5, 40 - 10}
The models equipped with the RFY series engine	^{30 +5, 30 - 10}
Models with a hydraulic suspension bracket
• Models of 2.0 l (with 8-valvate engines)	^{30 +5, 30 - 10}
• Models with 16-valvate engines (RFY)	^{50 +5, 50 - 20}
Volume of spherical receivers of a hydraulic suspension bracket, cm³	400
Volume of additional spherical receivers of a suspension bracket (hydroactive suspension bracket), cm³	500
Diameter of the cylinder of a hydraulic actuator of a suspension bracket, mm	35.0

Steering drive

Speed of a steering wheel
Models with the manual drive of the steering mechanism	34
The models equipped with system of hydrostrengthening of a wheel
Except the cars equipped with the RFY series engine	4.6
The cars equipped with the RFY series engine (16 valves)	3.2
Design of the steering mechanism	Rack
Number of teeths of a steering rack
Models with the manual drive of the steering mechanism	6
The models equipped with system of hydrostrengthening of a wheel	8

Transfer number of rack transfer

Models with the manual drive of the steering mechanism	24.5:1
The models equipped with system of hydrostrengthening of a wheel	17.0:1

Efforts of tightening of threaded connections, Nanometer

Forward suspension bracket
Nut of fastening of a power shaft	320
Nut of a coupling bolt of a collar of fastening of stupichny assembly to a suspension bracket rack	54
Nut of fastening of the lower spherical support to the lower lever of a suspension bracket	45
Fastening of a spherical support of the lower lever to stupichny assembly	250
Nuts of fastening of racks of the stabilizer of cross stability
• M10 nuts	40
• M12 nuts	70
Back nuts of fastening of the lower lever of a suspension bracket (and collars of a bar of the stabilizer of cross stability)	85
Nut of the axial swamp of the lower lever of a suspension bracket	85
Bolts of fastening of the hydraulic block on a body	25
Nut of fastening of a rack of a suspension bracket to the hydraulic block *	45
Screws of fastening of the hydraulic regulator	8
Bolts of fastening of a forward stretcher	120
Back suspension bracket
Stupichny nut	280
Bolts of fastening of the stabilizer of cross resistance to longitudinal levers of a suspension bracket	95
Nut of an axis of the longitudinal lever	130
Bolts of fastening of a connecting bar	28
Forward bolts of fastening of a back suspension bracket	80
Back bolts of fastening of a back suspension bracket	110
Nuts of fastening of a rubber pillow of a back support of a suspension bracket to a body	280
Screws of fastening of the hydraulic regulator	8
Steering
Nut of a steering wheel	30
Nut of the spherical hinge of a tip of steering draft	35
Coupling bolt of the cardan hinge of a steering column	20
Nuts of a steering column	15
Coupling bolt of fastening of an intermediate shaft of a steering column to a gear wheel of the steering mechanism	20
Bolts of fastening of a case of the steering mechanism to a stretcher	70
Lock-nut of a tip of steering draft	45
Fastening of a tip of steering thirst for the rack mechanism	60
Nipple sockets of hydraulic lines
• Tubes with a diameter of 3.5 ÷ of 4.5 mm	8
• Tubes with a diameter of 6.35 mm
•• With the sealing coupling	10
•• Without sealing coupling	13
• Tubes with a diameter of 10 mm	30
Wheels
Bolts of fastening of wheels	90

* Use of sealant for fixing of threaded connections is required.

General information

Function chart of a hydroactive suspension bracket


1 — the Left forward spherical receiver 2 — the Additional forward spherical receiver 3 — the Forward regulator of pressure 4 — the Left back spherical receiver 5 — the Additional back spherical receiver 6 — the Back regulator of pressure	7 — the Right back spherical receiver 8 — the Proofreader of height of provision of a back suspension bracket 9 — the Filter 10 — the Safety valve 11 — the Right forward spherical receiver

On the models of cars considered in the present manual the independent suspension bracket of hydropneumatic type of an exclusive design of Citroyon is used.

The main components of a forward suspension bracket are vertically established hydraulic rack, the lower levers and a bar of the stabilizer of cross stability. The lower levers and a bar of the stabilizer of cross stability are installed on a forward stretcher of the car. Supply of working liquid in hydraulic blocks is carried out from the main hydraulic system of the car through the proofreader of height of provision of a forward suspension bracket influencing the bar of the stabilizer of cross stability attached to the lower levers of a suspension bracket by means of racks.

Longitudinal levers, and also back hydraulic blocks (racks) supplied by working liquid from the main system through the proofreader of height of provision of a back suspension bracket are the basis for a design of a back suspension bracket.

Height of a road gleam of the car can change by switching of the control lever car established in salon. The lever by means of executive rods is connected to proofreaders of height of a lobby and back suspension bracket. On models of early years of release at switching off of the engine the car falls to the lower situation. Later models are equipped with the unilateral valve isolating a suspension bracket from the main hydraulic system that allows to avoid similar lowering of a body after an engine stop.

Hydraulic blocks are equipped with the automatic dampers replacing the screw springs and assemblies of shock-absorbers used in suspension brackets of usual type.

Some of models of a representative class are equipped with the special "hydroactive" suspension bracket allowing the driver to choose one of two modes of installation of a suspension bracket ("Normal" or "Sports"). The system has electronic control on the basis of signals of the information sensors installed on elements of a suspension bracket. "Normal" installation provides the maximum comfort at the movement of the car, automatically adapting a suspension bracket to a manner of driving of the driver and a condition of a paving. At the choice of the "Sports" mode the suspension bracket becomes more rigid that is suitable for a sports manner of driving and more at the movement on the serpentine. The function chart of a hydroactive suspension bracket is given in an illustration the Function chart of a hydroactive suspension bracket.

The steering mechanism of rack type is installed on the cross beam attached to a stretcher. The steering rack is equipped with the cardan hinge and the flexible coupling. Some of models are equipped with system of hydrostrengthening of a wheel in which working liquid moves from a path of the main hydraulic system of the car (see the Head Uniform hydraulic system).