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‒ → Apply the puller T 10055 into the slot on the side of the unit injector in place of the tensioning block.
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‒ Pull unit injector upwards out of cylinder head seat with gentle taps.
Installing
Notes:
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◆ New unit injectors are supplied with O rings and heat insulating seal.
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◆ If a new unit injector is installed, the appropriate adjustment screw in the rocker arm must also be renewed.
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◆ If the removed unit injector is re-installed, renew O-rings and heat insulating seal => Page 23-46.
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◆ Each time work is performed which requires the unit injector to be adjusted, the adjustment screw in the rocker arm and also the unit injector ball pin must be cleaned and checked for signs of wear. If wear is evident the ball pin and the adjustment screw must be replaced.
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◆ Grease the contact surface between ball pin and adjustment screw with G 000 100 grease.
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‒ Check that the three O rings and the heat insulating seal along with circlip are seating correctly before installing unit injector.
Note:
The O-rings must not be twisted.
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‒ Oil the O-rings and fit the unit injector into the cylinder head with great care.
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‒ Push the unit injector evenly into the cylinder head onto its stop.
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‒ Fit the tensioning block into the slot on the side of the unit injector.
Note:
If the unit injector is not at right angles to the tensioning block the securing bolt may loosen, which can result in damage to the unit injector or the cylinder head.
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‒ Therefore align the unit injector as follows.
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‒ Screw the new securing bolt into the tensioning block until the unit injector can still be turned easily.
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‒ Now align the unit injector at right angles with the camshaft bearing blocks.
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‒ Using a workshop depth gauge (measuring range at least 400 mm), check distance "a" from outside edge of cylinder head to round surface of unit injector.
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