Repair - General Information; Torque Settings; Special Tools For Repair - Atlas Copco LH 11 Manual

Overhauling instructions

repair - general information

Before repairing the handheld hydraulic breakers,
read the following in order to avoid incorrect repair
and damage to the breaker.
Repair other than in accordance with the
instructions given may subject the breaker to
conditions beyond the design capability, which may
result in system failure.
Notice leakages and defects before disassembly
- if necessary, consult the Trouble shooting section
in the safety and operating instructions. Test the
breaker with test equipment - a defect is easier to
find, when you have a presumption.
Danger
The breaker has a pressure accumulator. This
accumulator is pressurized even when there is no
hydraulic pressure to the breaker.
Attempting to dismantle the accumulator without
first releasing the pressure can cause personal
injury or death. The nitrogen gas pressure (N
must be released before carrying out further
dismantling. This procedure must be carried out by
a qualified person.
Warning
Do not repair the breaker when connected to the
hydraulic power source.

torque settings

Use only the torque settings specified in the spare
parts list.
Caution
All bolts used on Atlas Copco equipment are high
tensile and may not under any circumstances be
replaced by bolts of a lesser tensile specification.
6
LH 11, 18, 19 E, 22, 23 E, 27, 28 E, 39, 40 E

special tools for repair

Punches (scrapers)
ø14 mm: Part number 3371 8156 07
ø37 mm: Part number 3371 8156 06
ø44 mm: Part number 3371 8206 14
ø47 mm: Part number 3371 8206 20
)
2
Tool for accumulator
Part number 3371 8077 60
Filling device
Part number 3371 8011 55
This part number includes the above tool for
accumulator part number 3371 8077 60
© 2008 Atlas Copco Construction Tools AB
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No. 3392 5143 01 2008-02-29