Power steering pump, petrol engine
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Power steering pump, petrol engine
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Warning
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Remember that the servo system is highly sensitive to impurities, so observe the strictest cleanliness when working on the power steering system.
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1.
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Remove the air filter unit.
Engine with turbocharger
: Remove the hose and cover the turbo pipe.
Viggen RHD:
Remove the brace between the suspension strut towers.
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2.
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Relieve the belt tensioner of tension (use a ratchet handle or extension bar 1/2”) and prise the belt off the pump pulley.
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3.
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Clamp the hose with a pair of pinch-off pliers, part no. 30 07 739. Detach the hose from the pump. Use a rag to soak up the fluid that runs out.
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4.
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Detach the delivery pipe with bracket and nipple from the pump.
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5.
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Remove the pump bolts and remove the pump. (Viggen has a through-bolt with nut.)
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6.
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Drain the fluid from the pump.
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1.
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Fit the pump and tighten the bolts.
Tightening torque: 20 Nm (15 lbf ft)
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2.
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Fit the delivery pipe with bracket and nipple to the pump.
Tightening torque (nipple): 28 Nm (21 lbf ft)
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3.
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Attach the suction hose to the pump and remove the pinch-off pliers.
Tightening torque: 4 Nm (3 lbf ft)
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4.
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Fit the pump belt and make sure it is fitted correctly on all the pulleys.
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5.
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Fit the air filter unit.
Engine with turbocharger:
Fit the hose to the turbo pipe.
Viggen RHD:
Fit the brace between the suspension strut towers.
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6.
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Fill up the system with fresh fluid as per specification.
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Note
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• Always use fresh fluid.
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• Do
not
turn the steering wheel. Air could then get into the system and be the cause of longer bleeding times.
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7.
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Run the engine for 5 seconds.
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Warning
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The pump could be damaged if the engine is run for longer than 5 seconds.
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8.
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Check the fluid level in the reservoir and top up as necessary. At 20°C, it should be midway between the MAX and MIN marks.
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9.
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Start the engine again and run it until the fluid in the reservoir stops bubbling. Use a torch to see properly.
An abnormally loud noise from the pump indicates that there is still some air in the system.
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10.
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Stop the engine and check the fluid level. Top up as necessary.
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11.
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Check the pump connections for leaks.
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