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2 disassembly, 3 repair or replace guide, 4 inspection and reconditioning – Flowserve ISC2 Dual Pusher Repair User Manual

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2 Disassembly

When disassembling the seal, inspect for conditions which may have caused the

seal to be removed from service. If seal was removed due to premature failure,

determine what conditions caused that failure and correct any problems prior to

returning the repaired seal to service. For assistance with seal failure analysis,

please contact your Flowserve representative.

3 Repair or Replace Guide

Seal parts that are always replaced

• Inboard and outboard stationary faces [14] and [14.1]

• Inboard and outboard rotating faces [15] and [15.1]

• Springs [16]

• Square-headed pin [5]

• Rotating face support drive pin [5.1], sizes > 2.750 inch (70 mm)

• Inboard and outboard stationary face supports [100] and [100.1]

• All O-rings [13], [13.1], [13.2], [13.3], [76], [76.1], [71], [18.1] and [19]

• Gland gasket [18]

• Vibration dampeners [183]

• Snap ring [111], sizes ≤ 2.750 inch (70 mm)

• Setting devices [103] and cap screws [40]

• Cup-point [57] and quarter-dog set screws [57.1]

Seal parts that are reconditionable

• Inner gland [11]

• Outer gland [11.1]

• Sleeve assembly [1]

• Rotating face support [99]

• Drive collar [58]

4 Inspection and Reconditioning

There are certain critical areas of each part where special attention should be

paid to the condition. If any of the listed areas show signs of wear, corrosion

or other defects that cannot be removed without affecting the dimensional size

of the surfaces by more than 0.001 - 0.002 inch [0.025 - 0.05 mm], then the

respective part should be replaced. If grit blasting is performed, polish the O-ring

surfaces to achieve the required surface finish [see critical area listings for finish

requirements]. If any parts require machining to correct damage, please contact

your Flowserve representative for dimensional requirements, or for any other

questions regarding repair.