GE MEDICAL SYSTEMS
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
Chapter 8 - Replacement Procedures 8-111
8-6-10 Rear Wheel Replacement Procedure
NOTE: This section describes the installation and removal procedure of the earlier-type of rear wheel
(Part No. 2269436) and the newer improved type (Part No. 2389102). The installation procedure is the
same for each type of rear wheel, as described in the procedure below.
NOTE: IMPORTANT - When replacing the earlier type (Part No. 2269436) with newer improved type (Part No.
2389102) make sure you replace BOTH rear wheels.
8-6-10-1 Tools
Use the appropriate flat and Phillips-type screw drivers and combination spanner as indicated in the
rear wheel replacement procedure.
8-6-10-2 Preparation
Shut down the Vivid™ 4 ultrasound unit, as described in Chapter 3 - Installation.
8-6-10-3 Rear Wheel Removal
Note: The machine will remain stable, even after one wheel has been removed. However, for a safer
working environment, it is recommended to support the unit with wooden blocks or a jack.
WARNING: When BOTH rear wheels are being removed, the machine must be safely supported
on two wooden blocks (or on a jack capable of supporting the weight of the machine). Always
remove and replace one wheel at a time, before attempting to remove the second wheel.
1) Remove the Vivid™ 4 side covers and the rear cover, as described in the Side Covers Removal
Procedure on page 8 - 4 and the Rear Cover Removal Procedure on page 8 - 7.
2) Position the machine so that the wheel that is to be changed is not in contact with the ground, while
ensuring that the other three wheels remain on the ground. If replacing both wheels, support the
machine on two wooden blocks (or a suitable jack).
3) Loosen the shaft screw (see Figure 8-99 on page 8-112) and remove the defective wheel from the
machine chassis.
4) Proceed to the Rear Wheel Installation Procedure on page 8 - 112 to install the new rear wheel in
place of the one removed.
5.) If replacing both wheels, repeat step 3 above on the other wheel, then proceed to the Rear Wheel
Installation Procedure on page 8 - 112 to install the second new rear wheel and complete the rear
wheel installation procedure.
WARNING: Do not lean on the machine, or leave it unattended without support, if a wheel has
been removed.
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