This little tool is needed to replace the seals on SY accumulator control valve bobbin pistons.  Carefully remove the old seals with an X-acto knife, then the tapered tool can slip into place on the the short end of the piston.  The new seals can then slide into place with fingernail pressure - assuming you have strong nails.  In the final pic, the seal has not relaxed to it's final shape, but it will in just a few minutes.

We also have SY ACV rebuilding kits available under the "Parts" tab.

This tool is only for SY cars running RR363.

SY ACV Bobbin Piston Seal Installation Tool

  • This tool can ship First Class in the US in a bubble mailer for $1.50.  It can be included in any order for no extra charge.

    First Class Overseas shipping is available for $14.00, but this item can be included for no extra charge with any other order.

  • All British Tool Works tools are guaranteed for life.  No receipt necessary.  We will be astonished if one fails and we will ask plenty of questions, but it will be replaced post-haste or a refund given - your choice.  But honestly, that's not gonna happen.

Contact:   801 897-1324

British Tool Works is not affiliated with Rolls-Royce Motor Cars Ltd. or Bentley Motors Ltd.

Brian Vogel's SRH33576