SECTION IV
MAINTENANCE / SERVICE
4.9 Trendelenburg Pilot Operated Check
Valve Removal / Installation
A. Removal
(1) Support weight of table top with supports as
shown in Figure 4-10.
(2) Disconnect spring (1, Figure 4-10) from front
bridge cover (2).
(3) Remove four screws (3) which secures column
covers (4) and upper column cover (5) to
column assembly (6).
(4) Remove six screws (7), column covers (4), and
upper column cover (5) from column assem-
bly (6).
DANGER
Make sure weight of table top is being
properly supported during following
steps. When plugs are removed, hydraulic oil
keeping Trendelenburg cylinder stationary, will
no longer be constrained, allowing table top to
lower. Failure to properly support table top could
result in serious personal injury or death to
technician.
NOTE
The procedure to remove / install either pilot operated
check valve is the same, with exception of an
additional step for rod end input pilot operated check
valve. The additional step
is
included in this proce-
dure.
Also, illustration shows removal / installation of both
pilot operated check valves. Follow portion of art that
applies.
Page 4-11Printed in U.S.A.
Figure 4-10. Covers Removal / Installation
CA806401
SMI
7300
4
7
4
3
Support
6
5
4
2
1
© Schaerer Mayfield USA, Inc. 2004
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