JFD Divex SLS Mk IV, Operation And Maintenance Manual

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62 OM131
Chapter 4 P1939-OM-131 R11
4.3.2.7 Replace actuation cable wiper sleeves
1. Replace the wiper sleeves (Divex Part No. D328) on the counterlung end of the actuation
cable sleeves.
a. Actuate the SLS System Backpack by pulling its actuation handle.
b. Remove the old wiper sleeves from the counterlungs. These are located at the ends of the
actuation cable sleeves where the counterlung actuation cable enters the sleeve.
c. Fit new wiper sleeves (Divex Part No D328) using cable tie DST034 or suitable equivalent.
d. Repack the counterlungs.
4.3.2.8 Strip and service the overpressure indicator
1. Disconnect the overpressure indicator for washing, noting whether it is Type 1 or Type 2, as
there are two versions in service.
2. For the overpressure indicator Type 1, which is shown in Fig 4.3, proceed as follows:
a. Remove the grub screws (Fig 4.3, Item 7) using a suitable Allen key, and top cap (Fig 4.3,
Item 2) and bottom cap (Fig 4.3, Item 3) using a strap wrench.
b. Dismantle all other component parts.
c. Rinse all components in fresh water, paying particular attention to the Rotowink cartridge and
mesh screen, to ensure that they are totally free of foreign matter and salt crystallisation.
d. Inspect all O-rings and replace as necessary.
e. Reassemble in reverse order of a) and b) above. Before re-assembly, lightly lubricate the O-
ring seals with a breathing gas compatible lubricant (e.g. Christo-lube fluorinated grease -
Divex Part No: SM034).
3. For the overpressure indicator Type 2, which is shown in Fig 4.4, proceed as follows:
a. Remove the top cap (Fig 4.4, Item 2) using pliers.
b. Dismantle all component parts.
c. Rinse all components in fresh water, paying particular attention to the Rotowink cartridge and
mesh screen, to ensure that they are totally free of foreign matter and salt crystallisation.
d. Inspect all O-rings and replace as necessary.
e. Reassemble in reverse order of a. and b. above. Before re-assembly, lightly lubricate the O-
ring seals with a breathing gas compatible (e.g. Christo-lube fluorinated grease - Divex Part
No: SM034).