TPD 1317e Chapter 1 Engine Mounting 1.1 Installation Angles (a) The engine is intended to be mounted so that the cylinders are vertical, when viewed from ahead or astern (figure 1). The heel angles that are permissible in service are shown in figure 2a for 6 cylinder models, and 2b for 4 cylinder models. 30 o Maximum 30 o Maximum 25 o Continuous 35 o Intermittent Figure 1 - Vertical installation. Figure 2a - Acceptable heel angle for 6 cyclinder Figure 2b - Acceptable heel angle for 4 cyliinder models. models. (b) In standard form all engine models are suitable for installation so that in side view the crankshaft is ‘flywheel down’ from a minimum of 3 o to a maximum of 17 o .
An allowance has been made for an additional 3 o rise to occur in service, when climbing waves or on to the plane. 3 o Minimum SWL SWL 17 o Maximum Figure 3 - When in standard form all engine models may be installed ‘flywheel down’ from a minimum of 3 o to a maximum of 17 O . Page