Mec 2033ES, Service And Parts Manual

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"2033ES / 2633ES" Service & Parts Manual - ANSI Specifications October 2008
Page 1-13
HYDRAULIC MANIFOLD
Note: Refer to Section 3 for Remove and Replace instructions, and the Parts Section 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
contamination.
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 equiva-
lent 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.