DURKOPP ADLER 767 Service Instructions Manual page 54

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4. Malfunction of the pump

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Remove one locking ring at bolt 8.

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Pull out bolt 8.

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Loosen both core pins 5 at the stroke eccentric.

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Push stroke eccentric 4 to the right.

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Swivel tie rod 1 upwards and push it to the right.

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Pull off pump ring 2 to the right.

The pump ring can only be pulled off in a certain position. Turn

pump ring 2 before pulling it off.

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Take off piston 7 and spring 6.

Exchange damaged or worn parts, if necessary.

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Clean the pump.

Pull off the hose 3 and blow the pump with a compressed air.

ATTENTION !

When cleaning the oil pump 2 the position of the stroke

eccentric 4 is changed.

After cleaning the oil pump the stroke motion of the feed-dog has

to be readjusted (see chapter 3.2.3 Lifting motion of the feed-dog).

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