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Speed Level Seres - Servce & Parts Manual
January 2019
Secton 5 - Hydraulc System
Hydraulic Manifold
Note:
Refer to Parts Section 15.
Tag all components as they are removed to aid in reassembly.
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Hydraulic Manifold Removal
Disconnect the negative battery terminal.
Tag and disconnect the solenoid valve leads.
Tag and disconnect hydraulic hoses, and IMMEDIATELY cap the openings to prevent
contamination.
Remove the bolts that hold the manifold to the mounting bracket.
Remove the manifold block.
Disassembly
Remove coils from solenoid valves.
Mark and remove valves.
Mark and remove fittings, plugs, springs, balls, and orifices.
Cleaning And Inspection
Wash the manifold in cleaning solvent to remove built-up contaminants, then blow out all
passages with clean compressed air.
Inspect the manifold for cracks, thread damage and scoring where O-rings seal against internal
and external surfaces.
Wash and dry each component and check for thread damage, torn or cracked O-rings, and
proper operation.
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.
Install fittings, plugs, springs, balls, and orifices. Use one drop of Loctite #424 or equivalent
thread locker on each screw-in orifice.
Install valves.
Installation
Attach manifold assembly to mounting plate with mounting bolts.
Connect solenoid leads (as previously tagged).
Connect hydraulic hoses (as previously tagged). Be certain to tighten hoses.
Connect the battery.
Operate each hydraulic function and check for proper operation and leaks.
Adjust valve pressures.
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