Cleaning the cooling circuit
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Cleaning the cooling circuit
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Connect flushing equipment 87 91 824 to the cooling circuit in the opposite direction of flow.
Note
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Important
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Always use protective gloves. Incorrect connection can damage the gearbox, as the fluid filter includes a non-return valve preventing the fluid from circulating in the gearbox. Neither will the cooler be cleaned.
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1.
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Lubricate the sealing surface of the adapter plate with Texaco Texamatic DEXRON III (7045 EU, TL1863 US) mineral based fluid and fit a new fluid filter (part no. 91 44 445).
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2.
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Connect one of the hoses in the kit to the outlet on the bottom of the adapter plate (opposite to the fluid filter).
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3.
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Raise the car and remove the left-hand air shield.
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4.
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Detach the delivery hose from the lower/rear gearbox outlet and connect it to the connector on the side of the adapter plate (inlet).
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5.
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Detach the return hose from the upper/front outlet on the gearbox and connect the hose fitted to the bottom of the adapter.
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6.
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Couple together the return hose from the cooler with the rest of the hoses in the kit and connect it to the lower/rear connector on the gearbox.
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7.
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Fill the gearbox with fluid, start the engine and check the integrity of the connections.
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8.
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Apply the handbrake and depress the brake pedal.
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9.
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Move the selector lever to position D and let the cleaning process progress for 5 minutes.
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10.
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Detach the hose from the lower/rear connector on the gearbox and separate the joint between the hose from the cooler and the hose from the cleaning kit.
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11.
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Detach the cleaning kit hose from the lower/rear connector on the gearbox and instead connect the return hose from the cooler. Replace the seals with new ones.
Tightening torque: 30 Nm (22 lbf ft)
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12.
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Detach the delivery hose from the outlet on the side of the adapter plate (inlet) and connect it to the lower/rear gearbox outlet. Replace the seals with new ones.
Tightening torque: 27 Nm (20 lbf ft)
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13.
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Make sure the hoses are not resting on the subframe. Fit the air shield and lower the car.
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14.
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Check the engine oil and transmission fluid levels and top up as necessary.
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