Rolex CALIBRE 3155 - Uncasing, Dismantling the Date Indicator Mechanism and the Movement

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UNCASING, DISMANTLING
THE DATE
INDICATOR MECHANISM
AND
THE MOVEMENT*
1.1. Remove the
automatic device module
(No. 3135-145), taking
out the 2 screws
(No. 3135-5110) of
the automatic device module.
Dismantling and
assembling the automatic
device module, see pages
15 and 16.
1.2.
Unease the movement,
remove the hands and the
dial, then refit the
winding stem.
1.3.
Open the bolt of the
date indicator seating and
remove the date
indicator
(No. 3135-16100,
respectively No.
3135-16200).
1.4.
Remove the date
indicator seating (No.
3135-600) fastened with
4 blue screws
(No.3135-5600), 3
screws on the
circumference and the 4th one
nearthe beak of
the
jumper.
1.5.
Remove the hour wheel
(No. 3135-280),
the intermediate
date wheel (No.
3135-
670), the
date corrector (No.
3135-645) and
the intermediate
date corrector
wheel
(No.
3135-639).
1.6. Remove
the screw for date
wheel (No,
3135-5625) and the finger
for date
(No. 3135-623),
disengage the spring for
cam yoke (No.
3135-635), remove the
yoke for cam (No,
3135-633) with the jewel
for yoke for cam
(No. 3135-9633),
the date
wheel mounted
(No. 3135-625) and
the cannon pinion
(No. 3135-270)
—calibre 3175
(No.
3135-270).
The spring
for cam yoke can
be left in place.
1.7. Let down
the mainspring.
1.8.
Remove the balance guard (No.
3135-118), check the
hairsping and the balance.
1.9.
Loosen the screw for
hairspring bridle (No.
3135-5452), remove the balance
bridge (No.
3135-120), remove sideways
the hairspring from the stud
support
(No.
3135-450). Tighten the screw for bridle
again.
If it is
necessary to remove the collet, the
lever must rest on the rivet
of the balance
staff, see
Fig_ 5, page 8. Proceed
carefully not to damage the
balance.
It is recommended that the movement should be pre
-cleaned before it is dismantled_ This first cleaning
can be carried out
with the sprung balance and the barrel left in
place_ This procedure enables the
watchmaker to form a better judgement on
the conditions of the movement parts.
After complete
dismantling and the exchange of the
parts that need to be replaced a second cleaning
is necessary
before the
movement is reassembled.
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