KVH Industries TracVision M9 Leitfaden

KVH, TracVision, and the unique light-colored dome with contrasting baseplate are registered trademarks of KVH Industries, Inc.

All other trademarks are property of their respective companies. The information in this document is subject to change without notice.

These instructions explain how to replace the skew motor or skew motor belt in a TracVision

M9 antenna.

Installation Steps

Tools Required

This procedure requires the following tools:

Technical Support

If you need technical assistance, please contact KVH Technical Support:

Skew Motor Replacement Instructions

1. Remove the Radome, 2

2. Remove the Feed Tube and Reflector

Bracket, 2

3. Measure the Current Belt Tension, 3

4. Replace the Motor, 3

5. Set the Belt Tension, 3

6. Reinstall the Reflector Bracket and Feed

Tube, 4

Skew Motor Belt Replacement Instructions

1. Remove the Radome, 5

2. Remove the Feed Tube and Reflector

Bracket, 5

3. Replace the Belt, 6

4. Set the Belt Tension, 6

5. Reinstall the Reflector Bracket and Feed

Tube, 6

• Phillips screwdrivers

• 5/64" Allen key

• 3/32" Allen key

•Tensionmeter

• 7/16" open-end wrench

N. America, S. America, Australia:

Phone: +1 401 847-3327

E-mail: [email protected]

Europe, Middle East, Asia:

Phone: +45 45 160 180

E-mail: [email protected]

Skew Motor/Belt Replacement Instructions

for TracVision®M9

Skew Motor Replacement Instructions

Follow the steps below to replace the skew

motor.

Step 1 - Remove the Radome

Follow the steps below to remove the radome.

a. Disconnect power from the TracVision

system and any connected receivers and/or

multiswitch.

b. Remove the eight Phillips screws securing the

radome (see Figure 1). Then remove the

radome and set it aside in a safe place.

Step 2 - Remove the Feed Tube and Reflector

Bracket

Follow the instructions below to remove the feed

tube and reflector bracket.

a. Using a 5/64" allen key, loosen the two

screws securing the feed tube to the reflector

(see Figure 2). Then remove the feed tube and

set it aside in a safe place.

b. While holding in place the reflector bracket

located on the rear of the reflector (see

Figure 3), use a Phillips screwdriver to

remove the six screws and washers securing

the reflector bracket in place (see Figure 2).

CAUTION

For your own safety, be sure to disconnect

power from all wired components before

performing this procedure.

Figure 1 Radome Screws

Figure 2 Feed Tube/Reflector Bracket Screws

Figure 3 Reflector Bracket

#10-32 Screw (x8)

Baseplate

Radome

Feed Tube

Reflector Bracket

Screws and

Washers (x6)

Feed Tube

Screws (x2)

Reflector

Bracket

Step 3 - Measure the Current Belt Tension

Use a tension meter to measure and record the

current skew motor belt tension (see Figure 4).

You will need to reset the belt tension to this

measurement later.

Step 4 - Replace the Motor

Follow the steps below to replace the skew

motor.

a. Disconnect the motor cable from the motor

(see Figure 4).

b. Using a 3/32" allen key, remove the four

screws and washers securing the skew motor

(see Figure 4) to the reflector bracket.

c. Gently slide the motor hub to relieve belt

tension. Then extract the motor.

d. Insert the new motor into place. Use the four

screws and washers you removed in Step b to

loosely fasten the skew motor to the reflector

bracket.

e. Connect the motor cable to the motor.

Step 5 - Set the Belt Tension

Follow the steps below to set the belt tension.

a. Using a tension meter, slide the motor hub as

necessary to achieve the reading you

measured in “Step 3 - Measure the Current

Belt Tension.”

b. Tighten the motor screws once you achieve

the correct tension.

Figure 4 Skew Motor Belt, Screws, and Washers

Motor Screw

and Washer (x4)

Cable Connector

Belt

Motor

Hub

Step 6 - Reinstall the Reflector Bracket and Feed

Tube

Follow the instructions below to reinstall the feed

tube and reflector bracket.

a. Properly align the reflector bracket to the

reflector (see Figure 5).

b. Secure the reflector bracket into place using

the six screws and washers you removed in

Step 2b. on page 2 (see Figure 6).

c. Reinstall the feed tube fully into the choke

feed. Then tighten the two 5/64" allen screws

to secure it in place (see Figure 6).

d. Reinstall the radome. Then restore power to

the TracVision system and any connected

receivers and/or multiswitch.

The procedure is complete!

Figure 5 Reflector Bracket Alignment

Figure 6 Feed Tube/Reflector Bracket Screws

Parallel to

Antenna Base

Feed Tube

Reflector Bracket

Screws and

Washers (x6)

Feed Tube

Screws (x2)

Skew Motor Belt Replacement Instructions

Follow the steps below to replace the skew motor

belt.

Step 1 - Remove the Radome

Follow the steps below to remove the radome.

a. Disconnect power from the TracVision

system and any connected receivers and/or

multiswitch.

b. Remove the eight Phillips screws securing the

radome (see Figure 7). Then remove the

radome and set it aside in a safe place.

Step 2 - Remove the Feed Tube and Reflector

Bracket

Follow the instructions below to remove the feed

tube and reflector bracket.

a. Using a 5/64" allen key, loosen the two

screws securing the feed tube to the reflector

(see Figure 8). Then remove the feed tube and

set it aside in a safe place.

b. While holding in place the reflector bracket

located on the rear of the reflector (see

Figure 9), use a Phillips screwdriver to

remove the six screws and washers securing

the reflector bracket to the reflector (see

Figure 8).

CAUTION

For your own safety, be sure to disconnect

power from all wired components before

performing this procedure.

Figure 7 Radome Screws

Figure 8 Feed Tube/Reflector Bracket Screws

Figure 9 Reflector Bracket

#10-32 Screw (x8)

Baseplate

Radome

Feed Tube

Reflector Bracket

Screws and

Washers (x6)

Feed Tube

Screws (x2)

Reflector

Bracket

Step 3 - Replace the Belt

Follow the steps below to replace the skew motor

belt.

a. Using a 3/32" allen key, loosen but do not

remove the four screws and washers securing

the skew motor in place (see Figure 10).

b. Using a Phillips screwdriver, remove the

screw securing the choke feed to the reflector

bracket (see Figure 10).

c. Slide the motor hub to relieve belt tension

and extract the belt (see Figure 11).

d. Work the new belt over the choke feed pulley

and motor hub. Ensure the teeth engage the

belt.

Step 4 - Set the Belt Tension

Follow the steps below to set the belt tension.

a. Using a tension meter, slide the motor hub as

necessary to achieve a 400-500 Hz

(3.1 -4.8 lbs) reading.

b. Tighten the motor screws once you achieve

the correct tension.

Step 5 - Reinstall the Reflector Bracket and Feed

Tube

Follow the instructions below to reinstall the feed

tube and reflector bracket.

a. Secure the reflector bracket onto the choke

feed using the screw you removed in Step 3b.

(see Figure 10).

Figure 10 Choke Feed/Motor Screws

Figure 11 Belt Routing

Motor Screw

and Washer (x4)

Belt

Choke Feed

Screw

Choke Feed

Pulley

Motor Hub

b. Properly align the reflector bracket to the

reflector (see Figure 12).

c. Secure the reflector bracket into place using

the six screws and washers you removed in

Step 2b. on page 5 (see Figure 13).

d. Reinstall the feed tube fully into the choke

feed. Then tighten the two 5/64" allen screws

to secure it in place (see Figure 13).

e. Reinstall the radome. Then restore power to

the TracVision system and any connected

receivers and/or multiswitch.

The procedure is complete!

Figure 12 Reflector Bracket Alignment

Figure 13 Feed Tube/Reflector Screws

Parallel to

Antenna Base

Feed Tube

Reflector Bracket

Screws and

Washers (x6)

Feed Tube

Screws (x2)

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