T-SM47j P35/54
T20-a
OPERATION TABLE
6.5.1.4 Gas spring release head / pivot pin
If the piston end of a gas spring shows sign of excess
wear or play at its pivot, remove the pivot pin and release
head, check for wear and replace parts as required
following the procedure below:
i Remove the cover as detailed in section 6.5.1.3.
ii Remove the gas spring as detailed in section 6.5.1.2.
iii On a leg section remove the cross bar by removing
the four retaining screws.
iv Remove the end cap by removing its fixing screws
and slide it out of the side arm.
v Remove the pivot pin from the end cap and check it
and the release head for wear or damage, replace
parts as required.
vi Reassemble using the reverse of sections ‘i-v’ above
lubricating the pivot pin with grease (part number
110477) and noting the use of grease, threadlock
and torque values (Fig 6.4) when replacing the gas
spring and sidebar screws (see sections 6.5.1.2 and
6.5.1.3). On the leg section the cross bar screws
also require threadlock (part number 670650).
Finally check section function.
6.5.1.5 Gas spring release handle
If the gas spring release handle is damaged remove and
replace it as below:
i Remove section from table and rest on a suitable
work surface upside down.
ii Using a suitable punch knock out the roll pins that
hold the handle in the release heads.
iii Reassemble by reversing the above lubricating with
grease (part number 110477) and finally check
section function.
6.5.1.6 X-ray translucent top
To replace an X-ray translucent top proceed as follows:
i Remove cover from section as 6.5.1.3.
ii Remove old, and replace new, X-ray translucent top.
iii Reassemble section as 6.5.1.3 and finally check
section function.
6.5.2 Trunk sections
The following parts may need replacement in the event of
wear or damage (see notes below in each section and
test details in the relevant part of section 6.6 before
replacement). The procedures for these part replacements
are detailed in the sections shown below:
6.5.2.1 Traverse motor
6.5.2.2 Traverse drive belt
6.5.2.3 Break motor
6.5.2.4 Break gearbox
6.5.2.5 Side rails
6.5.2.6 Top covers
6.5.2.7 Push button components
6.5.2.8 Traverse rod bearing
6.5.2.9 Drive belt guide needle bearing
6.5.2.10 Attachment blocks
6.5.2.11 Black tops
To gain access for some of these procedures it is not
necessary to remove the trunk sections but to simply tip
the table into the ‘Service Position’ see section 1.9. Note
safety warning in section 4.0.
6.5.2.1 Traverse motor
To replace a traverse motor first check that the motor has
failed (and not the control circuit) as detailed in section
6.6.6. If the motor has failed replace it as follows, noting
comments for later tables:
i Place the table into the ‘Service position’ as detailed
in section 1.9 (noting safety warnings in Section 4.0)
to gain access to the bottom cross beam cover (item
17 of Fig. 6.7) which can now be removed.
ii Slacken two M8 locking nuts releasing belt tension
as much as possible (not necessary on later tables).
Note the path of the drive belt before removing the
motor assembly. Remove the two M6 socket head
screws securing the motor support posts to the
traverse crossbeam assembly (item 1 of Fig. 6.7).
Remove the motor assembly and then remove the
two spade connections (noting orientation) from the
motor terminals.
iii Release the screw securing the pulley to the motor
spindle and remove the three screws holding the
motor to the motor support plate.
iv Secure the new motor to the motor support plate
(use threadlock part number 670650 on all these
and all other screw threads), replace the pulley but
do not tighten the securing screw at this stage.
v Connect the motor to the original spade connectors
ensuring correct orientation and reassemble the
motor assembly to the traverse cross beam ensuring
the belt is correctly routed by referring to Fig. 6.7.
Align the pulley and tighten the location screw, note
torque setting of 9Nm.
vi Adjust the belt tensioners* and tighten them when
adequate tension is achieved, do not over tighten
to the extent that the inner faces of the belt touch.
Run the traverse motor from a 24V (d.c.) supply
and check for correct belt alignment, repeat in the
opposite direction.
* Adjust tension on later tables by rotating motor
plate about support ‘A’, tighten support ‘B’ then ‘A’
when tension correct (see Fig. 6.7).
vii Continue to reassemble the table by reversing
section ‘i’ above.
viii Test all table functions.
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