GE MEDICAL SYSTEMS
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
Chapter 8 - Replacement Procedures 8-103
8-6-8 Gas Spring Replacement Procedure
8-6-8-1 Tools
Use the appropriate flat and Phillips-type screw drivers, a wire cutter, the appropriate open-ring
wrenches and a Hex M8x80mm screw as indicated in the gas spring replacement procedure.
8-6-8-2 Preparation
Shut down the Vivid™ 4 ultrasound unit, as described in Chapter 3 - Installation.
8-6-8-3 Gas Spring Removal Procedure
1) Pull out and remove the air filter, as described in the Front Cover Removal Procedure on page 8 - 5.
2) 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.
3) Remove the front end crate, as described in the Front End Crate Removal Procedure on page 8 - 41.
4) Lower the control console to its minimum height.
NOTE: For clarification, the letters appearing in square brackets [ ] in the following steps correspond to the
letters shown in Figure 8-91 and Figure 8-92 below.
5) Remove the securing screw [A] from the cable holder located on the gas spring rod.
6) Turn the cable holder [B] to free the cable end sleeve [C] then remove the cable end stopper [D]
from the trigger arm [E] .
DANGER: Do not activate the trigger arm as this will cause the expansion of the gas spring and may
cause damage and/or injury!
7) Remove the retaining washer [K] from the pin [L] at the lower end of the gas spring.
8) Insert the Hex M8x80mm screw (not shown) in the appropriate hole to the left of the compartment
at its base, and then tighten the screw until the pin [L] at the lower end of the gas spring is loose
enough to be removed, and remove the pin.
Figure 8-91 Gas Spring - Lower End and Cable
K
C
F
J
D
B
L
A
E
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