Clock Repair Statement of Work.pdf

SCOPE OF WORK

PART 1 GENERAL

1.1 SUMMARY OF WORK

The Contractor will perform the following repair work on the Clock Tower Clock Works resulting in a fully functioning clock works system in accordance with the clock inspection report dated 16 May

1. Install scaffolding

a. Delivery, rental, pickup and fuel for 130’ lift. Construction, rental and removal of scaffolding.

2. Preservation of A.S. Hotchkiss clock dials, motion and distribution works

a. Removal of clock hands. Removal of motion works. Photograph and document all parts. All parts cleaned. All parts with excessive wear repaired or replaced.

Expansion joints restored. Bushings replaced if needed. New gaskets and dust covers made. Completed work bench tested. New “sugar pine” hands made. New hands sanded, primed and painted. Hand hubs cleaned, repaired and repainted.

Counterbalance rods and weights cleaned, repaired or replaced. All parts transported back to Rock Island Arsenal (RIA).

3. Preservation of clock dials, preservation of clock movement

a. New parts reassembled and installed. New hands precisely balanced. Clock weights dropped in chutes. Cables removed from drums. Clock movement will be carefully evaluated. All disassembled parts will be photographed and documented. All parts requiring machine work will be packed for transport, if necessary. Wheels, pinions, arbors, pivots, gathering pallets, winding drums, snail strike rack and all hardware will be cleaned. Racket pawls, spring and axels will be checked for stress cracks and replaced if needed. Strike arm pin repaired or replaced. Pulley yokes restored. Pallet arbor repaired. Jeweled pallets will be remade. All repaired and machined parts packed and returned to RIA.

4. Preservation, reassembly & preparation to start clock

a. All new and preserved parts will be reassembled. Oiling where needed. Winding drums will be put into proper time, checking to be sure that set marks are also properly timed. Expansion joints restored. Cables and weights installed. The clock hands will be set to the current time, the clock will be wound and started.

5. Preservation of Meneely Bell Repair of Clock Faces

a. Remove iron straps and collar. Lift bell and secure on wood blocks. Remove sleepers and replace with composite or treated wood timbers. Replace wood spacers. Restore or replace metal spacers. Clean rust from straps, collarto and bell hammer. Prime metal parts with “Rust Destroyer”, paint 3 coats Dupont Imron

Polyurethane or equivalent. Replace failed fasteners. Install all replaced and restored parts. Reset bell on new supports. Reconnect and wind strike cable.

6. Repair of Clock Faces

a. Evaluate and photograph exterior of clock faces. Remove and replace small amounts of damaged wood. Prime and paint to match existing. Prime and paint any portion of clock face where paint is missing. Replace any failed caulk.

Evaluate and photograph interior of clock faces. Remove damaged wood and failed caulk. Fabricate new wood parts to replace those removed. Prime and paint to match existing. Re-caulk as needed.

1.2 PERFORMANCE PERIOD

The contract work shall be completed by 31 August 2020

PART 2 PRODUCTS

2.1 Report

The Contractor shall provide a list of all restoration work preformed