Suzuki Grand Vitara
+ General information
+ Maintenance and lubricant
+ Heater, ventilation and conditioner
- Steering
+ Suspension bracket, wheels and tires
+ Adjustment of angles of installation of wheels of a forward suspension bracket
- System of the power steering
+ Main description
- Diagnostics
General diagnostic table
+ Steering wheel
+ Power steering liquid
+ Driving belt of the pump of the power steering
+ System of idling
+ Liquid
- Hydraulic pressure in the GUR system
Check of pressure
+ Protective covers
Procedure of a razvozdushivaniye of system
+ Steering wheel and steering column
+ Suspension bracket
+ Wheels and tires
+ Forward driving shaft / bearing of a shaft. Oil epiploon
+ Driveshafts
+ Brake system
+ Engines
+ Fuel system
+ System of ignition
+ System of start
+ System of release
+ Transmissions
+ Coupling
+ Transfer
+ Forward and back differentials
+ Windows, mirrors, locks and security measures. Immobilizer
+ Electric equipment
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Hydraulic pressure in the GUR system
Check of pressure
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After careful cleaning of connection of a hose of high pressure with the pump of the hydraulic booster, disconnect a hose from the pump and install the special equipment (the oil pressure sensor, connecting branch pipes). Shade each nut with the corresponding moment of an inhaling.
Special tool:
(A) — 09915-77411 (the oil pressure sensor)
(B) — 09915-77420
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Be accurate, do not damage a conditioner radiator during performance of service works (if it is equipped). |
Check each connection for leak of liquid and distil air. See the Procedure of a razvozdushivaniye of system in this Chapter.
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2 — a connector
3 — laying
4 — a connecting bolt
5 — a sleeve of high pressure
6 — a sleeve of low pressure |
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1 — a tank for power steering liquid
5 — a sleeve of high pressure
6 — a sleeve of low pressure |
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At the idling engine, rotate a wheel for warming up of the engine until temperature in a tank of the hydraulic booster reaches 50 – 60 °C (122 - 140 °F).
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Check the return pressure, measuring hydraulic pressure idling, without impact on a steering wheel. Return pressure: below, than 1000 kPa (10 kg/cm2, 142 psi).
If the return pressure is higher than the specified values, check the adjusting valve and hydraulic tubes for blockages.
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1 — a tank for power steering liquid
2 — the valve of the manometer (is open)
3 — the pump of the hydraulic booster
4 — a steering rack
5 — a sleeve of high pressure
6 — a sleeve of low pressure |
Check unloading pressure.
Increase engine turns up to 1500 min.-1. Gradually close the valve, watching increase in pressure on the manometer and estimate the unloading pressure (the maximum hydraulic pressure).
Unloading pressure:
6200 – 7000 kPa
(62 – 70 kg/cm2, 882 – 995 psi) — for the G16 engine
6700 – 7500 kPa
(67 – 75 kg/cm2, 953 – 1067 psi) — for the J20 engine
7050 – 7850 kPa
If pressure stated above, then malfunction of the backpressure valve is possible.
If pressure provided below, then malfunction of the pump of the hydraulic booster or jamming of a spring of the backpressure valve is possible.
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Do not block the manometer valve longer than for 10 seconds. |
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1 — a tank for power steering liquid
2 — the valve of the manometer (is closed)
3 — the oil pressure sensor
4 — the pump of the hydraulic booster
5 — a steering rack |
Then open the manometer valve completely and increase turns up to 1500 min.-1. Then completely turn out a wheel to the left or to the right and estimate unloading pressure.
Unloading pressure:
6200 – 7000 kPa.
(62 – 70 kg/cm2, 882 – 995 psi) — for the G16 engine
6700 – 7500 kPa
(67 – 75 kg/cm2, 953 – 1067 psi) — for the J20 engine
7050 – 7850 kPa
If pressure stated above, then malfunction of the backpressure valve is possible.
If pressure provided below, then malfunction of a steering rack is possible. Replace a steering rack.
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Never detain a steering wheel in extreme situation more than for 10 seconds. |
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1 — a tank for power steering liquid
2 — the valve of the manometer (is open)
3 — the oil pressure sensor
4 — the pump of the hydraulic booster
5 — a steering rack |
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