MGF and TF Restoration Manual by Roger Parker

Author:Roger Parker [Roger Parker]
Language: eng
Format: epub
ISBN: 9781847975393
Publisher: Crowood
Published: 2013-03-14T16:00:00+00:00

Fig. 4.272 The ‘knuckle joint’ is the vertical pin and hidden joint under the rubber boot that sits in a cup in the upper suspension arm. This joint is correctly seated, but if the boot is displaced then check the joint is sitting correctly. The spacer being moved is a standard item and should be retained.

A professional Hydrolastic pump with a vacuum facility comes into its own at this point by removing as much air as possible. Air will seriously hamper the correct operation of the displacer. If you only have a Hydrolastic pump with no vacuum facility, then the best way of removing air from the system is to pump the suspension up to 500psi, which of course means you need a pressure gauge – another advantage of the professional type pump – and then let the pressure down to 200psi. Repeat the cycle from 500 to 200psi, before pumping up again to 400psi, the nominal working pressure for the MGF suspension.

This should have seen air removed from that part of the system and allows you to provisionally set the ride height, which is something I will mention next as it deserves attention. Deal with the other side of the car in the same way and then fine trimming of the ride height can be carried out.

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