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nose pliers. Use a stiff brush or putty knife to remove the growth taking care to avoid scratching
the depth transducer. Lightly wet sand with fine grade wet/dry paper.
The water lubricated paddlewheel bearings have a life of up to 5 years on low-speed boats [less
than 10 knots (11 MPH)] and 1 year on high-speed vessels. Paddlewheels can fracture and
shafts can bend due to impact with water borne objects and mishandling in boat yards. O-rings
must be free of abrasions and cuts to ensure a watertight seal. A replacement Paddlewheel Kit
(33-398-04) is available.
1. Remove the old paddlewheel shaft with needle-nose pliers (see Figure 7).
2. Place the new paddlewheel in the cavity with the flat side of the blade facing the same
direction as the arrow on the top of the insert.
3. Tap the new shaft into place until the end is flush with the outside wall of the insert.
4. Install a large O-ring near the top of the insert. Install a small O-ring near the
paddlewheel.
5. Place the remaining two O-rings in similar positions on the blanking plug.
4.3 Replacement Parts
Lost, broken, and worn parts should be replaced immediately. If you have purchased a plastic
housing and have a wood hull or desire greater strength, purchase a Maretron metal housing.
Obtain the following parts from your marine dealer or directly from Maretron.
4.4 Connection Checking
Periodically check the security of the cables connected to the NMEA 2000
tighten if necessary.
4.5 Antifouling Paint
Reapply antifouling paint every six months or at the beginning of each boating season (see
Section 2.5).
5 Troubleshooting
If you notice unexpected operation of the Maretron DST110, follow the troubleshooting
procedures in this section to remedy simple problems.
Revision 1.3
Housing, Nut &
Washer
M33-100 (Bronze)
Paddlewheel, Shaft
& O-rings
33-398-04PW
®
interface and
Page 13
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