Hi Flow Stroller Technical Service Manual • PN 14314465 Rev
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Repair Procedures
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RP16 – QDV and Lip Seal RR (Top Fill) (Figure 13)
a. Remove soft case (RP 4).
b. Remove two retaining nuts and lift bottom fill tube out of coil.
c. Replace QDV by substituting old QDV (Item 62) with the new
one, tightening Item 57 to 140–150 inch-lbs (1550–1700 N-cm)
and Item 58 to 300 inch-lbs (3000 N-cm).
d. Replace lipseal by removing Item 65 and Item 64. Apply a thin
film of fluorolubricant to new Item 64 and insert into QDV.
Tighten Item 65 to 140–150 inch-lbs (1550–1700 N-cm).
RP11 – Clean/Dry Probe and Dewar
Procedure 1:
a. Empty and warm dewar per RP 14).
b. Open vent valve.
c. Loosen feed-thru nut and remove harness.
d. After vent valve (Item 50) is thawed, if all moisture is not re-
moved, continue with procedure #2.
Procedure 2:
a. Remove manifold assembly (See RP 9).
b. Blow off probe assembly with clean, dry nitrogen gas.
c. Blow out inside of dewar with clean, dry nitrogen gas
until inside is clean and dry.
d. Replace manifold assembly (See RP 9).
RP12 – LOX Fill
Refer to POI for proper fill procedure.
RP13 – Liberator Lip Seal RR (Side Fill)
Refer to Liberator Service Manual.
RP14 – Empty and Warm
a. Turn FCV knob to highest flow setting.
b. Allow unit to sit for 24 hours before proceeding.
RP15 – QDV RR (Side Fill) (Figure 12)
a. Remove soft case (RP 4).
b. Loosen QDV retaining nut (Item A).
c. To replace QDV, reverse above procedure, aligning pin in the
upright position. Apply thin film of fluorolubricant to O-ring
(Item 36). Torque retaining nut to 140–150 inch-lbs (1550–1700
N-cm).
d . Replace soft case (RP 4).
FIGURE 12: Side Fill QDV
FIGURE 13: Top Fill QDV
WARNING:
The unit must be empty and vented before starting pro-
cedure.
WARNING:
The unit must be empty and vented before starting pro-
cedure.
NOTE: Filling source must contain a minimum of 5 liters of
properly saturated LOX.
