Mec 3072ES, Руководство по обслуживанию и запасным частям

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October 2008 "3072ES / 3772ES / 3772ES HD" Service & Parts Manual
Page 1-20
HYDRAULIC MANIFOLD
Note: Refer to Section 3 for Remove and Replace instructions, and Parts
Section E for a list of hardware.
Tag all components as they are removed so as not to confuse their
location during reassembly.
Hydraulic Manifold Removal
1. Disconnect the negative battery terminal.
2. Tag and disconnect the solenoid valve leads.
3. Tag and disconnect hydraulic hoses, and IMMEDIATELY cap the openings to prevent con-
tamination.
4. Remove the bolts that hold the manifold to the mounting bracket.
5. Remove the manifold block.
Disassembly
1. Remove coils from solenoid valves.
2. Remove valves.
3. Remove fittings, plugs, springs, balls, and orifices.
Cleaning and Inspection
1. Wash the manifold in cleaning solvent to remove built-up contaminants, then blow out all
passages 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 defective parts and O-rings.
Assembly
Note: Lubricate all O-rings before installation to prevent damage to the O-ring.
Seat balls in manifold block by lightly tapping on the ball with a brass
drift punch.
1. Install fittings, plugs, springs, balls, and orifices. Use one drop of Locktite #424 or equivalent
thread locker on each screw-in orifice.
2. Install valves.
Installation
1. Attach manifold assembly to mounting plate with mounting bolts.
2. Connect solenoid leads (as previously tagged).
3. Connect hydraulic hoses (as previously tagged). Be certain to tighten hoses.
4. Connect the battery.
5. Operate each hydraulic function and check for proper operation and leaks.
6. Adjust valve pressures.