Bolt connections/Tightening torques
The bolt connections of hydraulic breakers are subjected to very high loads.
◆
Tighten any loose connections without exceeding the recommended tightening torques.
HB 2000
HB 2000 DP
HB 2500
HB 2500 DP
Connection point Pos. Interval Type of spanner Size
Torque
Adapter plate*
(fastening screws)
A daily Allen key 22 mm
1500 Nm
Tensioning bolts** B weekly visual
check
Torque spanner/ power
wrench
55 mm 65 mm
Cover for control mechanism /
control mechanism
(Allen screws/hexagon head
screws)
C in case of a repair Allen key 17 mm
380 Nm
AutoControl System D in case of a repair Allen key 22 mm
300 Nm
PowerAdapt E in case of a repair socket spanner 24 mm
300 Nm
Filling valve »G«
(threaded plug)
F in case of a repair socket spanner
Allen key
22 mm
130 Nm
5 mm
20 Nm
Ports »P« and »T« G weekly open-ended wrench 55 mm
285 Nm
StartSelect
(plug)
H in case of a repair Allen key 17 mm
200 Nm
HP-accumulator
(Fastening screws)
I weekly Allen key 14 mm
350 Nm
Flanges
(Allen screws)
J weekly Allen key
10 mm
80 Nm
percussion chamber
ventilation
K in case of a repair open-ended wrench 41 mm
200 Nm
Swivel joint covers
(Allen screws)
L daily Allen key 10 mm
80 Nm
Hose connections
ContiLube
®
II
- weekly Various open-ended spanners with different spanner sizes
* Apply anti-seize compound to the allen screw threads before inserting them. The contact faces of the
screw head and the lock washers must not be lubricated.
**HB 2000
**HB 2500
The tensioning bolt heads can be seen through the openings in the breaker box.
1. Pre-tighten the tensioning bolts to 500 Nm crosswise,
2. retighten 120° (2 hexagons) crosswise,
3. retighten 150° (2.5 hexagons) crosswise
Safety and operating instructions HB 2000, 2000 DP, 2500, 2500 DP
56 © Construction Tools GmbH | 3390 5090 01 | 2016-05-23
Original instructions
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