Klein Marine Systems, Inc. HYDROCHART 3500, Operation And Maintenance Manual

Page: 45 / 86

Disassembling and Reassembling the Sonar Head Unit
4-7
4.3.2 Reassembling the Sonar Head Unit
To reassemble the Sonar Head Unit:
1. If the sonar electronics chassis was removed, verify that the O-ring on the
connector end cap is clean and free of dirt or scratches. Also use a
lint-free cloth
or paper towel to clean the O-ring surface inside the housing and apply a light
coat of silicone grease to this surface. If the chassis was not removed, proceed to
Step 5.
If dirt or scratches are present, replace the O-ring. When replacing the O-ring,
first clean the O-ring surface inside the housing and the O-ring groove in the
end cap using a lint-free cloth or paper towel, and then apply a
light coat of
silicone grease to the O-ring before installing it.
2.
Insert the chassis into the
housing and align the
locator pin in the end cap
with the slot in the housing
as shown in Figure 4-10.
3.
Push the connector end cap
into the housing until it is
fully seated.
4.
Loosen the two socket head
screws in the connector end
cap until the heads of the
screws are flush with the
outside surface of the
housing.
5.
If the transducer arrays
were removed, reattach
them using all eight of the
M5 x 20 mm socket head cap screws and rubber washers and tighten the
screws securely.
6.
Referring to the sonar electronics housing connector end cap shown in
Figure 4-11, and to Figure 4-5 on page 4-4 for the location of the cables,
connect the cables to the connectors on the end cap as follows:
NOTE
The starboard transducer is the transducer that is to the left when
facing the sonar electronics housing connector end cap as in Figure 4-11
with the housing mounted in the frame. The port transducer is to the right.
Figure 4-10:
Aligning and Installing the
Connector End Cap
Locator pin
Slot