Project Brupegvideo

Aligning the propeller shaft and gearbox - Project Brupeg Ep.319

September 3, 2023 · 56 min · 72K views

What this video covers

The restoration of the fishing trawler *Brupeg* requires precise alignment between the propeller shaft and the gearbox output flange. To establish a baseline, the crew centers the propeller shaft within its stern gland bearings by measuring total vertical movement with a dial gauge and lifting the shaft to the midpoint of that travel.26:07 With the shaft centered, they use a chain block and jacking screws on the engine mounts to shift the engine assembly into position.23:13 Because space constraints prevent a full 360-degree rotation of the shaft for dial indicator measurements, the team uses feeler gauges to ensure the gearbox and propeller shaft flanges are parallel and face-to-face.25:29 They then plan to use a modified, low-profile dial gauge base to achieve final center-to-center alignment.30:19 The process involves iterative adjustments between the engine mounts and the shaft position to ensure the drivetrain is perfectly mated.

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