Page 46 (Model K)
9.1.2 N0280/02/S46 Pressure regulators (PR4 & PR6)
Location in pneumatic unit
Part number: N0288/02
1. Disconnect the following tubes:
(A) mean jet delivery tube
(B) blended gas supply tube
(C) forward jet delivery tube
2. Disconnect the electrical connectors
from PR4 (D) and PR6 (E).
PR4 cable is tagged 4.
PR6 cable is tagged 6.
3. Remove the nut (F) that secures the
SV13 soleniod coil (G) and withdraw the
coil from the stem.
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