A735-01-840 Issue B
Page 22
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Chemical resistance conversion kit
8.2.1
Install the chemical resistance conversion kit
Ensure the pump is switched off before fitting. Discard all used 19.6 ID O-ring's.
Valve pad conversion
1. Undo the 2 off retaining bolts and partially remove
the fan cowl.
Caution:
Cooling fan supply lead attached.
2. Carefully disconnect the cooling fan electrical supply
lead and remove the fan cowl.
3. Using a 21 mm AF spanner (not supplied), remove
the gas ballast control assembly, seat and O-ring.
4a.
(nXDS6i,10i &15i)
Remove the remaining items
(spring and pad) from the gas ballast port. Using a
pin spanner, remove the exhaust valve end cap,
O-ring, spring and valve pad.
4b.
(nXDS20i)
The nXDS20i uses two addition exhaust
valves. Remove these using the same procedure as in
4a.
5. Assemble the new valve parts in reverse order.
6. Reconnect and assemble the cooling fan supply lead
and fan cowl (1) in reverse order. Torque the
retaining bolts (2) to 3 Nm.
A. Gas ballast port
B. Exhaust valves