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Oil consumption too low.
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Pump action has become tight due to buildup of dirt in pump area resulting in low pressure.
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Clean and restore free motion.
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Pump is not being depressed to full stroke.
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Adjust as described in "Operating - General Purposes" Section.
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Pump valves are not closing correctly.
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Disassemble and clean or replace pump.
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Oil too heavy.
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Use a type of oil specified in "Lubrication and Maintenance" Section.
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Oil consumption too high.
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Main line interrupted.
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Repair or replace.
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Oil too light.
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Use a type of oil specified in "Lubrication and Maintenance" Section.
Reduce pump stroke.
Reduce oil flow at brushes by using metering valves with smaller restriction diameter.
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Machine dry.
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Pump inoperative resulting in no pressure.
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Repair, adjust or replace.
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Main line interrupted.
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Repair or replace.
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No oil in system.
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Refill as necessary with specified oil. See "Lubricating and Maintenance" Section.
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Air lock or pump empty.
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Bleed pump.
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Heavy contamination resulting in blocked system.
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Clean system and replace all metering valves.
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Line trapped.
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Repair lines.
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