Komatsu 830E-AC, Shop Manual

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L05035 Steering Component Repair L5-7
7. Hold bladder valve stem on the flats with a
wrench and tighten nut (5) securely.
8. If removed, install pressure switch (15), valve
assembly (11) and charging valve onto gas
valve manifold (14). Install new O-Ring (16) on
gas valve manifold (14). Hold bladder valve
stem with wrench and install gas valve manifold
(14) and tighten securely.
9. Holding the hydraulic port assembly (2) by the
threaded end, insert the poppet end into the
shell fluid port. Lay complete assembly in side
shell.
10. Fold anti-extrusion ring (3) to enable insertion
into the shell. Once the anti-extrusion ring has
cleared the fluid port opening, place the anti-
extrusion ring on the hydraulic port assembly
with the steel collar facing toward the shell fluid
port.
11. Pull the threaded end of the port assembly
through the shell fluid port until it seats solidly
into position on the shell fluid port opening.
12. Connect nitrogen charging kit to charging valve.
Refer to “Steering Accumulator Charging Pro-
cedure” to charge accumulator. With hydraulic
port assembly firmly in place, slowly pressurize
the bladder using dry nitrogen with sufficient
pressure, first 172 kPa (25 psi), then approxi-
mately 345 kPa (50 psi) to hold port assembly in
place so both hands are free to continue with
assembly.
13. Install the metal O-Ring backup washer (6) over
hydraulic port assembly and push into the shell
fluid port to bottom it out on anti-extrusion ring.
14. Install O-Ring (7) over hydraulic port assembly
and push it into the shell fluid port until it has
bottomed out against the metal O-Ring backup
washer (6).
1. Bladder Assembly
2. Hydraulic Port Assembly
3. Anti Extrusion Ring
4. Shell
5. Nut
6. O-Ring Back-Up (Metal) 7. O-Ring
8. O-Ring Back-Up
9. Spacer
10. Lock Ring
11. Valve Assembly
12. Bleed plug
13. Warning Plate
14. Gas Valve Manifold
15. Pressure Switch
16. O-Ring
FIGURE 5-5. ACCUMULATOR ASSEMBLY