KVH Industries TracVision 4 - Manual (Page 63)

4. Loosen the screws and gently press downward on
the motor hub until the drive belt is at proper
tension. Adjust the belt tension for a maximum of
1 ⁄
8
" (3 mm) deflection with moderate finger
pressure between the motor and antenna pulley.
Some readjustment may be necessary if the belt
tension results in excessive antenna reflector
vibration.
5. Tighten the screws.
Replacing the Elevation Drive Motor
1. Remove the P-clip that secures the elevation motor
cable to the support frame (see Figure 4-9 on
page 62).
2. Disconnect the elevation motor cable from the
in-line connector (see Figure 4-9).
3. Remove the four Phillips screws and washers that
secure the motor to the support frame (see
Figure 4-9). Remove the motor assembly.
4. Install the new motor assembly with the elevation
motor cable facing down, as shown in Figure 4-9.
Reinstall the screws and washers but do not
tighten.
5. Raise the motor and work the toothed drive belt
over the outer lip of the motor hub. Press down
gently on the motor body while rotating the
antenna reflector up and down to ensure free
movement.
6. Adjust the belt tension for a maximum of
1 ⁄
8
" (3 mm) deflection with moderate finger
pressure between the motor and antenna pulley.
Some readjustment may be necessary if the belt
tension results in excessive antenna reflector
vibration.
7. Tighten the screws.
8. Connect the new elevation motor cable to the
in-line connector.
9. Secure the elevation motor cable to the support
frame using the P-clip that you removed
previously.
Maintenance
54-0150 63
Excessive belt tension may result in
antenna reflector vibration.