Date: November 2016
Issue No: 2
Crewsaver -
Servicing Manual : Offshore 290 Lifejacket
Page
of 35
29
Check the bottom O-ring seal is in place. Before fitting the
operating head onto the manifold, check that the Schrader valve is
fitted. If fitting a new Schrader valve use a calibrated torque driver
set to 0.32 - 0.36 Nm. Then place the operating head onto the
manifold , so that the cylinder is pointing upwards.
Fig. 8.3.5
Fig. 8.3.6
Sealing O-Ring
Check the O-ring seal is in the recess on the
top face of the operating head. With the top
O-ring in place, fit the retaining nut. The
retaining nut should be screwed into place
using a torque wrench or driver fitted with a
9/16” socket. The wrench or driver should be
set to between 2.5 and 2.7 Nm. This will
prevent damage to the operating head and
ensure a good seal is maintained.
Fig. 8.3.7
Fig 8.3 United Moulders Mk5i Operating Head
Section 8
