Page 48 (Model J)
9.1.2 N0280/02/S46 Pressure regulators (PR3, PR4 & PR6)
Location in pneumatic unit
Part number: N0280/02
1. Disconnect the following tubes:
(A) forward jet supply tube
(B) reverse jet supply tube
(C) mean jet delivery tube
2. Disconnect the electrical connectors
from PR3 (D), PR4 (E) and PR6 (F).
PR3 cable is tagged 3.
PR4 cable is tagged 4.
PR6 cable is tagged 6.