TM 5-3805-280-10
Rod
changer
REMOVING A ROD (AUTO MODE S2)
K4
M1
E
K1
K3
C2
B2
K2
B3
B4
S2
L
F
G
H
note : If during this sequence, the drifter
Make sure :
S the carousel is properly positioned i.e. a
shank or the upper coupling uncouples, returns to
rod housing is in front of the opening of the rod
point 5).
catcher (the indicator L is then alight).
S the rod clamp arms are swung into the rod
7)
After the rod has been disconnected from
changer.
the bottom coupling and is high enough to enter into
S the rod clamps are closed.
the carousel, close the clamps onto the rod : the
S the mode selector is on S2 position.
drifter shank unscrews from the top coupling (depress
1)
While drilling the end of the last rod and if
M1 button while changer lever in K4 direction).
the drifter has not reached its front end position, start
8)
After the drifter shank has been discon-
to break loose the drifter shank (depress the thread
nected from the top coupling swing the rod into the
loosening button H and pull back the drifter control
carousel (changer lever in K3 direction).
lever in C2 direction to reverse the rotation).
note : If the rod abuts against the rod holder
Stop drilling.
plate,
2)
Feed the drifter back (feed lever in B4 direc-
swing the rod toward the guide (changer
tion) until the bottom coupling is in the centralizer.
lever in K1 direction).
Close the centralizer onto the coupling
screw the drifter shank into the coupling
(switch E)
(changer lever in K2 direction).
depress M4 button to open the clamps
3)
Break loose the rod (depress the thread
and keeping M4 button depressed, adjust the position
loosening button H and pull back the drifter control
of the rod by acting on the feed control lever.
lever in C2 direction to reverse the rotation). The rota-
swing the rod into the carousel (changer
tion of the rod must be visible when looking at the con-
lever in K3 direction).
nection, air flows from the connection.
Stop air flushing (switch F).
9)
Feed the drifter down to the centralizer end
4)
Swing the rod changer lever in K1 direction.
of the drill guide (feed lever in B3 direction).
Hold the position for 1 second (the rod clamps open,
the carousel rotate, the rod clamp arms swing
10) Screw the drifter shank into the coupling
towards the guide and the clamps close onto the rod).
(rod changer lever in K2 direction).
5)
Tighten the upper coupling onto the rod (rod
11)
Perform steps 2 through 10 to remove more
changer lever in K2 direction, hold the position for few
rod.
seconds).
6)
Unscrew the rod from the bottom coupling
(rod changer lever in K4 direction).
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