SERVICE MANUAL
Page 611
CHAPTER 6
9107
May/12
Page 611
Feb/11
CHAPTER 6
283
SERVICE MANUAL
ISO 9650
6. Component repair
6.1 Pressure Relief Valve (Leaf eld PRV Type B10)
CAUTION:
ENSURE WHEN CONDUCTING THE REPAIR TO THE SLIT,
NO MEK COMES IN CONTACT WITH THE PRV. THE PRV
IS TO BE FITTED WITH THE SEALING PLUG ATTACHED.
NO OTHER CAP OR PLUG IS TO BE USED. PLEASE
REMOVE CAP AT THE END OF THE PROCESS.
Disassembly of the pressure relief valve is not permitted. The Leaf
i
eld B10
valve has no serviceable components — a faulty valve must be replaced
with a new unit. Replace the complete assembly:
CAUTION:
IT IS NOT PERMITTED TO ATTACH THE LEAFIELD PRV,
WHEN PREASSEMBLED INTO A DOUBLER, TO ANOTHER
COMPONENT USING ADHESIVE.
6.1.1 Removal method
(a) A slit of approximately 150 mm (6”), must be made in the
buoyancy tube in the vicinity of the affected valve to enable
access to the inside of the buoyancy tube. The slit should be
made along the length of the buoyancy. The end of the slit
should be no closer than 100 mm (4”) to the edge of the PRV
doubler.
(b) The slit should be made as small as possible and repaired
subsequently by patching according to standard practice.
(c) Loosen both parts of the valve using the appropriate tools.
(d) Remove the valve.
(e) Discard all parts of the faulty PRV. Do not reuse any of them.
