Komatsu 830E-AC Shop Manual page 689

6. Connect a lifting device to the top section of the
accumulator and take up slack.
The accumulator weighs approximately 140 Kg
(310 lbs). Use a suitable lifting device that can
handle the load safely.
7. Remove the cap screws, flatwashers and lock-
nuts on the clamps (2, Figure 5-4) securing the
accumulator to the mounting bracket.
8. Lift accumulator clear of the mounting bracket
and move to a clean work area for disassembly.
9. Clean exterior of accumulator before starting
disassembly.
FIGURE 5-4. ACCUMULATOR MOUNTING
1. Accumulators
2. Clamps
L05035
3. Hoses (to Bleeddown
Manifold)
Steering Component Repair
Installation
The accumulator weighs approximately 140 Kg
(310 lbs). Use a suitable lifting device that can
handle the load safely.
1. Attach a lifting device to the top section of the
accumulator. Accumulator should be positioned
in the lower mounting bracket with the anti-rota-
tion block positioned between the two stop
blocks.
2. Install mounting clamps (2, Figure 5-4) and
secure in place using cap screws, locknuts and
flatwashers. Tighten cap screws securely, but
do not overtighten as this may distort the accu-
mulator wall.
3. If the pressure switch (9, Figure 5-3) or valve
assembly (8) were removed, install at this time.
Connect electrical leads to the pressure switch.
Using a new O-ring, uncap and connect the
hydraulic line to the accumulator.
4. Precharge the accumulator with pure dry nitro-
gen as outlined in the Steering Accumulator
Charging Procedure.
NOTE: Permanent damage to accumulator bladder
will result if engine is started without accumulators
properly charged.
Disassembly
1. Once the accumulator has been removed from
the equipment, the accumulator body should be
secured in a vise, preferably a chain vise. If a
standard jaw vise is used, brass inserts should
be used to protect the hydraulic port assembly
from damage. Clamp on wrench flats only
when using a jaw vise to prevent accumulator
from turning.
2. Remove bleed plug (12, Figure 5-5) on hydrau-
lic port assembly. Using a spanner wrench,
remove lock ring (10) from the hydraulic port
assembly. Use an adjustable wrench on the
flats located on the port assembly to prevent
port assembly from rotating.
L5-5