Chapter 4 N40475 Figure 2 shows the exhaust elbow (1) with water injection and insulating blanket (3) & (4). The elbow can be rotated (2) to achieve the optimal position. Note: The exhaust elbow must have a fall of 10 O downwards. If a taller system is required then a dry 90 O elbow (not shown) can be used on the turbocharger outlet with the water injected elbow (1). As both elbows use a clamp, full articulation can be utilised to suit most applications Note: The clamps are to be torqued to 9Nm. Due consideration must be given to providing flexibility in the exhaust hose, particularly if the engine is flexibly mounted.
Where the exhaust hose must pass through a bulkhead immediately behind the engine it is preferable that the arrangement shown in figure 3 is adopted, using rubber bellows (1) to provide flexibility. Note: that the bellows should be in an unstrained condition when fitted, a minimum fall of 5 o (3) is required, and that the point of water injection must be at least 8 inches above the waterline (2). Note: A single double hump bellows can be used where space is restricted. Caution: Movement of the engine on the flexible mounts must not be restricted by the exhaust hose. Figure 2 Figure 3 Page 10