Komatsu 830E-AC Shop Manual page 690

3. Remove spacer (9), then push the hydraulic
port assembly into the shell prior to Step 4.
4. Insert hand into the accumulator shell and
remove the O-Ring backup (8), O-Ring (7), and
metal backup washer (6). Separate the anti-
extrusion ring from the hydraulic port. Fold anti-
extrusion ring to enable removal of anti-extru-
sion ring from shell.
5. Remove hydraulic port from accumulator shell.
6. Secure bladder valve stem from twisting with an
appropriate wrench applied to the valve stem
flats and remove gas valve manifold (14). Then
remove nut (5) while still holding bladder valve
stem from turning.
7. Fold bladder and pull out of accumulator shell.
A slight twisting motion while pulling on the
bladder reduces effort required to remove blad-
der from shell. If bladder is slippery, hold with a
cloth.
Cleaning and Inspection
1. All metal parts should be cleaned with a clean-
ing agent.
2. Seals and soft parts should be wiped clean.
3. Inflate bladder to normal size. Wash bladder
with a soap solution. If soap solution bubbles,
discard bladder. After testing, deflate bladder
immediately.
4. Inspect assembly for damage; check the poppet
plunger to see that it spins freely and functions
properly.
5. Check anti-extrusion ring and soft seals for
damage and wear; replace all worn or damaged
seals with original equipment seals.
6. After shell has been cleaned with a cleansing
agent, check the inside and outside of shell.
Special attention should be given to the area
where the gas valve and hydraulic assembly
pass through the shell. Any nicks or damages in
this area could destroy the accumulator bladder
or damage new seals. If this area is pitted con-
sult your Komatsu Service Manager.
L5-6
Repair of the housing by welding, machining or
plating
APPROVED. These procedures may weaken the
housing and result in serious injury to personnel
when pressurized.
Assembly
Assemble the accumulator in a dust and lint free
area. Maintain complete cleanliness during
assembly to prevent possible contamination.
1. After shell (4, Figure 5-5) has been cleaned and
inspected, place accumulator shell in vise or on
table.
2. Thoroughly coat the inside of the accumulator
shell with a liberal amount of clean hydraulic oil
to lubricate and cushion the bladder.
sure the entire internal of the shell is lubricated.
3. With all gas completely exhausted from blad-
der, collapse bladder and fold longitudinally in a
compact roll.
4. Insert the bladder pull rod into the valve stem
opening and out through the shell fluid port.
Attach the bladder pull rod to the bladder valve
stem.
5. With one hand, pull the bladder pull rod while
feeding the bladder into the shell with the other
hand. Slight twisting of bladder will assist in this
insertion.
6. Once the bladder valve stem has been pulled
through the valve stem opening in the shell,
install the valve stem nut (5) by hand. Once the
valve stem nut is in place, remove the bladder
pull rod.
Steering Component Repair
to salvage a worn area is NOT
Make
L05035