National Vacuum Equipment WPT 480/P Owner's Manual And Operating Instructions - Pump Doesn’T Turn
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Cracked pump body
Pump doesn’t turn
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Broken vane
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Frozen
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Pump endplate bolts too tight
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Faulty PTO or drive set up
No vacuum or pressure in tank
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Suction valve in neutral
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Defective seal or vanes
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Pump not driven fast enough
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Check valve or suction line clogged
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Leak in tank or fittings
Pump Rebuilding
WPT 480/P
WPT 600/P
WPT 720/P
Please read these instructions completely before
attempting repair.
1.
Remove the drain plug on the
bottom of the rear endplate.
2.
Remove the oil lines from the oil
pump.
The oil lines are self-locking.