RDG603A20 - Issue 10
Page 38 of 100
Part Description
Part Number
Exhaust Coupling 1½” x 1½” BSP
RDG1916
Exhaust Silencer DSA-38
RDG1911
Flexible
Exhaust Hose (18”)
RDG1879
Blanket 18” Flexy Exhaust
RDG2477
Hospital Silencer
1½“ BSP
RDG6536
Make sure the exhaust increases then decreases in height as shown in (
Figure 21
).
Figure 21: Correct Exhaust Installation
21. Hydraulic Drive Transmissions
If an engine is to have a hydraulic drive transmission attached to it instead of a conventional
marine gearbox, a number of points must be observed.
Bobtail engines (i.e. Engines supplied without a marine gearbox), normally do not have
a gearbox oil cooler fitted. However if a cooler is supplied, this will only be suitable to
cool a conventional marine gearbox.
Hydraulic drive transmissions generate far more heat than a conventional marine
gearbox. Therefore the size of the oil cooler installed must be calculated by the
hydraulic drive transmission supplier. This is to ensure it has sufficient cooling capacity
and is sized appropriately taking into account:
Maximum engine power.
High ambient summer air temperature.
Summer River/Canal/Sea temperature.
No additional restriction to engine coolant flow is present.
