Upright SL26SL, Руководство по обслуживанию и запасным частям

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SL26/30SL Work Platform 3-11
M
AINTENANCE
Section
3.9
3.9 H
YDRAULIC
M
ANIFOLD
(F
IGURE
3-13)
Though it is not always necessary to remove the
manifold to perform maintenance procedures, a
determination should be made prior to beginning as
to whether or not the manifold should be removed
before maintenance procedures begin.
Removal
1. Disconnect the battery ground cable.
2. Tag and disconnect the solenoid valve leads from
the terminal strip.
3. Disconnect the cushion valve block.
4. Tag, disconnect and plug hydraulic hoses.
5. Remove the bolts that hold the manifold to the
mounting bracket.
6. Remove manifold block.
Disassembly
Note: Mark all components as they are removed
so as not to confuse their location during
assembly. Refer to Figure 3-13 often to aid in
disassembly and assembly.
1. Remove coils from solenoid valves.
2. Remove spool valve covers and spool valves.
3. Remove solenoid valves, main relief valve, coun-
terbalance valves and emergency lowering
valves.
4. Disconnect cushion down valve block.
5. Remove tilt/level block and the manifold block.
6. Remove fittings, plugs, springs, balls and orifices.
Cleaning and Inspection
1. Wash the manifold in cleaning solvent to remove
built up contaminants and then blow out all pas-
sages with clean compressed air.
2. Inspect the manifold for cracks, thread damage
and scoring where O-rings seal against internal
and external surfaces.
3. Wash and dry each component and check for
thread damage, torn or cracked O-rings and
proper operation.
4. Replace parts and O-rings found unserviceable.
Assembly
Note: Lubricate all O-rings before installation to
prevent damage to O-rings. Seat all balls in
manifold block by lightly tapping on the ball
with a brass drift.
1. Install fittings, plugs, balls and orifices. Use one
drop of Locktite #242 on each screw-in orifice.
2. Install tilt/level block and manifold block.
3. Install emergency lowering valve, counterbalance
valves, main relief valve, brake pressure reducing
valve, solenoid valves and spool valves.
4. Install coils on solenoid valves.
Installation
1. Attach manifold assembly to mounting plate with
bolts.
Note: Longer bolt goes in hole nearest the front
of the module.
2. Attach cushion down valve block.
3. Connect solenoid leads to terminal strip (as previ-
ously tagged).
4. Connect hydraulic hoses. Be certain to tighten
hoses to manifold.
5. Operate each hydraulic function and check for
proper operation and leaks.
6. Adjust all hydraulic pressures according to
instructions in Section 3.5.