CaptSkinny
New Member
I bought a JLG 450A that I think has some valves in the wrong position, or an incorrect valve installed. But the JLG part numbers in the manual don't match the numbers printed on the valves, which are Hydraforce part numbers (JLG's manufacturer for the OEM values), so I can't verify that they're in the right place. Could anyone tell me what manufacturer (Hydraforce) part numbers should be printed on these valves in the main manifold? :
I've been able to piece together that maybe the Swing valve should be SP08-47C instead of the "D" variant that's there, but I can't confirm. The difference between C and D variants is the neutral position: with C ("closed center") flow is blocked from all ports, and with D ("motor spool") flow is allowed in the neutral position. Not sure if that helps identify what goes where.
- Swing: JLG# 7023914 in manual
- Upper lift: JLG# 7023922 in manual
I've been able to piece together that maybe the Swing valve should be SP08-47C instead of the "D" variant that's there, but I can't confirm. The difference between C and D variants is the neutral position: with C ("closed center") flow is blocked from all ports, and with D ("motor spool") flow is allowed in the neutral position. Not sure if that helps identify what goes where.
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