3
9
10.5.9 Screw couplings CP 1650
O
n percussi
v
e tools such as hydraulic breakers, the
screw couplings are subjected to particularly high
loads. During the first 50 operating hours the screw
couplings on the breaker must be checked daily,
thereafter once a week (e
x
cept of tie rods and high
−
pressure accumulator). Tighten any loose connec
tions without e
x
ceeding the prescribed tightening
tor
q
ue.
The following screws
/
couplings must be checked
:
ÂÂÂÂÂÂÂÂÂÂ
ÂÂÂÂÂÂÂÂÂÂ
ÂÂÂÂÂÂÂÂÂÂ
Connection point
ÂÂÂ
ÂÂÂ
ÂÂÂ
Part
no.
ÂÂÂÂÂ
ÂÂÂÂÂ
ÂÂÂÂÂ
Interval
ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ
ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ
ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ
CP 1650
Type of spanner ...... size ..... Nm
Adapter
K
1
daily
Allen key size 22
/
1
500 Nm
Tensioning bolts
KK
2
sound check
weekly
Tor
q
ue wrench
/
Power wrench size 55
Allen screw
(
v
al
v
e co
v
er
/
control
v
al
v
e)
3
in case of
repair
S
panner size 30
/
3
8
0 Nm
S
crew plug
(Perc. chamber
v
entilation)
4
in case of
repair
Jaw spanner size 4
1
/
200 Nm
Filling
v
al
v
e
»G«
S
crew plug
5
in case of
repair
S
ocket spanner size 22
/
1
30 Nm
Allen key size 5
/
20 Nm
Connections
»P«
and
»T«
6
weekly
Jaw spanner size 50
/
400 Nm
Port
»F«
for impact rate
switching
7
weekly
Jaw spanner size 30
/
200 Nm
High
−
pressure accumulator
KKK
(connecting screws)
8
weekly
S
ocket spanner size 30
Connection
»CL«
9
weekly
Jaw spanner size 27
/
200 Nm
Jaw spanner size
1
4
/
20 Nm
Hose connections
CP
−L
ube
9
weekly
S
ocket and jaw spanners of
v
arying sizes
K
Apply anti
−
seize to the threads of the cylindrical
bolts before screwing them in.
The contact face of the bolt head and the locking
rings must be free of lubricant.
Note
Tensioning bolts
:
Visual check and
/
or sound check by
metallic hitting of the upper he
x
agons
/
washers thru
the ser
v
ice openings of breaker bo
x
.
KK
Tightening the tensioning bolts for
CP 1650
H
Pre
−
tighten nuts in diagonally opposed pairs to
500 Nm,
H
then tighten in diagonally opposed pairs by a fur
ther
1
20° (2 side of he
x
agonal head),
H
then finish tighten in diagonally opposed pairs by
9
0°
(
1
½ sides of the he
x
agonal head).
KKK
Tightening the e
x
pansion bolts on high
−
pressure
accumulator
CP 1650
1
. Treat the threads and HeliCoil thread inserts for
the e
x
pansion bolts with an Anti
−S
eize agent.
2. Treat the surfaces between the bolt head, washer,
and high
−
pressure accumulator co
v
er with Anti
−
S
eize agent.
3. Place on the high
−
pressure accumulator, and tigh
ten the e
x
pansion bolts by hand in a crosswise
fashion.
4. Pretighten the e
x
pansion bolts to
1
00 Nm, pro
ceeding in a crosswise fashion,
5. then tighten each bolt through 30° in a crosswise
fashion,
6
. finally tighten each bolt again through
6
0° in a
crosswise fashion.
1
P
V
CL
P
T
F
2
3
8
5
7
4
6
9
9
6
X
CP 1650
View X
(without hammer bo
x
)
