Reduction Gear

Question 1

Purpose of the RG?

Answer 1

Reduces the revolution per minute of the MDE and to control the direction of the shaft

Question 2

Model number for RG

Answer 2

Manufacture ZF
Model BW 255
Ratio 2.462:1
Lube oil 7.4 gallons

Question 3

RG has two capabilities?

Answer 3

Trolling- used to reduce the normal clutch ahead speed below normal ex: towing
Trailing- allows freewheeling of one propeller through the water by the fwd motion of the cutter. Max time is 15hrs and used to conserve fuel or during mde casualty. RG is not cooled by RW so monitor temperature

Question 4

Operating the knife edge strainer EOW does what?

Answer 4

Rotates the handle clockwise two complete times to clean foreign materials from filter screen

Question 5

RW cools the RG with RW provided by the MDE RW pump.

Answer 5

Proper cooling of the oil enables better operation under various loads in speed conditions and Lengthens the service life of the machinery

Question 6

How many discharges on the side?

Answer 6

SSDG
RG discharge
MDE exhaust

Question 7

What does propulsion shafts provide

Answer 7

A means of transmitting the high torque output to the propeller while the Stern tube supports the propulsion shafts and maintain proper alignment

Question 8

What are mechanical drip less shaft seals

Answer 8

They prevent seawater from entering the cutter.