India Mark II Chain Replacement

Written By: Andrew Optimus Goldheart
  • Comments: 0
India Mark II Chain Replacement

Difficulty

Moderate

Steps

21

Time Required

No estimate

Introduction

This guide will guide you through removing the chain for cleaning or replacing. Be sure to keep all components in a sanitary place when storing them.

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    • Before performing any repairs, perform a water test on the pump by raising and lowering the handle a full 40 strokes. A properly performing pump will yield greater than 10 liters.

    • Remove the hex head bolt from the top of the access door on the pump head.

    • On reassembly, this bolt should be hand-tight.

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    • Pull the access door straight up off the pump head.

    • Store the access door in a sanitary place to prevent contamination.

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    • The access door has a tongue that fits into the base of the pump head.

    • The access door makes a convenient tray to hold nuts and bolts during the disassembly.

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    • Place the spacer collar around the pump rod below the raised chain, with the beveled side down, and the flat side facing up.

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    • The following procedure requires two people. If you attempt to do this alone, you risk injuring yourself and damaging the pump.

    • Lift the pump handle until the base of the chain comes to rest on the spacer collar, and the chain is slack. Hold the handle in this position while the chain is being detached.

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    • Using the two access holes, place an angled socket wrench on the bolt and nut attaching the chain to the pump handle.

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    • Hold the wrench on the bolt stationary.

    • Loosen the nut.

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    • Remove the nut from the chain bolt.

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    • Remove the washer from the chain bolt.

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    • Remove the chain bolt.

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    • Pull the top of the chain straight off of the pump handle.

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    • Remove the two bolts from the handle side of the pump head.

    • Use one wrench on the bolt and another on the nut beneath. Hold the bolt stationary and loosen the nut.

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    • Remove the two bolts and nuts from the handle side.

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    • After removing the two handle side bolts, have your partner support the weight of the handle.

    • Remove the two remaining bolts in the same fashion.

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    • Lift and remove the pump head from the pump.

    • Store the pump head in a sanitary place, preferably above ground, to prevent contamination.

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    • Slightly twist the head flange, until the corners overhang the top of the tank far enough to grab.

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    • Lift the head flange up about one foot above the tank.

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    • Slide the rod clamp around the pump rod, and support it on the tank base.

    • Make sure the pegs in the base of the rod clamp fit into the appropriate holes in the top of the tank.

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    • Tighten the rod clamp against the pump rod.

    • Be sure the pump rod is centered within the jaws of the clamp and held securely.

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    • Lower the head flange.

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    • Unscrew the chain from the top of the pump rod.

    • Remove the chain.

    • Check the chain for signs of wear or damage.

    • Set the chain in a sanitary place, such as the access door that was previously removed.

Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

Andrew Optimus Goldheart

Member since: 17/10/09

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