| Installation occurs in a reversed order from removal, and attention must be paid to the following: |
Note | t
| Ensure proper fitting of tandem pump coupling to the valve crankshaft. |
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| Tandem pump joints must be replaced regularly. |
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| Connect return hose -3- (blue marked) to tandem pum return connector. |
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| Install tande pump and tighten upper fastening screws at 20 Nm. |
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| Tighten lower fastening screws at 10 Nm. |
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| Connect supply hose -2- (white marking) to supply connection, and vacuum hose -1- from servo-assisted brake to tandem pump -4-. |
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| Connect supply hose -1- (white marked) to fuel filter. |
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| Connect Hand-operated vacuum pump -V.A.G 1390/- withDrainage container -V.A.G 1390/1- to return hose -2- (blue marked) of fuel filter. |
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| Activate manual vacuum pump, until no more fuel comes out of return hose. Ensure no fuel is sucked into manual vacuum pump. |
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| Connect return hose -2- (blue marked) to fuel filter. |
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