Rebuilding & Protection of Propeller Shafts

Common Defects

Corrosion and Abrasion

Preparation

All work should be carried out in strict accordance with the relevant ThistleBond Technical Data Sheet. For in situ applications, a tented working area must be constructed in order to protect the shaft from inclement weather conditions. It may also be necessary to control the temperature within the work area in order to reduce the possibility of humidity and thus prevent condensation.

Surface Preparation

All surfaces should be washed with UPS TAC 883 Universal Cleaner in order to remove all dirt and grease. Grit Blast all surface to be treated using an angular abrasive to give a surface finish of Swedish Std Sa 2½ ensuring a profile of 75 microns minimum.

Application Technique

Mix the UPS 230 EG Urethane Ceramic Paste (TR230) and using a stiff bristled brush, or applicator provided apply a thin layer of the material to wet out the prepared surface. Immediately wrap the treated are with UPS TBRT 4 Reinforcement Tape ensuring a minimum of ¼ “ overlap between consecutive turns. Apply a further coat of UPS 235 Brush Grade Urethane Ceramic (TR235) ensuring complete encapsulation of the reinforcement tape.

Recommended Equipment

Mixing and application tools are included in each pack of ThistleBond Product. Prior to carrying out the repair however, it is important that all necessary tools and equipment are available on site. These could include the following – Grit Blasting equipment, UPS TAC 883 Universal Cleaner, UPS TAC 872 Release Agent, Protective Clothing, Polyethylene Tenting, Suitable centralising Jig or Template. New Pintle.