MA series
Heishin MA series — Gear pump for fuel oil and lubricating oil transfer.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Verify pressure gauge readings against design specifications. For gear pumps (MGB, M, MA, MGA, TGB, MVB) check inlet/outlet pressure differential; for centrifugal pumps verify head performance curve compliance.
Inspect pump body, shaft seals, and bearing housings for oil seepage or residue. Check oil condition (color, clarity, viscosity) in lube oil lines. For bilge/sludge pumps (HP, RI series) verify shaft packing condition.
Auditory/vibration assessment during operation. Verify suction strainer cleanliness (visual/pressure drop check). Confirm inlet pressure above minimum required (typically 0.1-0.3 bar for positive displacement pumps).
Obtain oil samples from pump suction and discharge lines. Conduct particle count analysis (ISO 4406) and water content testing (Karl Fischer method) per ISO 3448 lube oil grade standard.
Dial gauge measurement of coupling concentricity (runout <0.05 mm typical). Check motor-to-pump base bolts for tightness. Verify shaft end float and radial bearing play within design limits.
Type-general inspection and maintenance points for this equipment category — not model-specific.
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