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Hydraulic breaker: first greasing and daily checks
Too little grease wears the front cover and the tool and can break the tool. This guide gives the first greasing and the routine from the breaker manual. Bolt torques and nitrogen pressures differ by model, so those are in the manual and not repeated here. The manual is e-mailed from the "Download manual" button on the product page. Page numbers refer to it.
Updated 2026-10-18
Short answer
Grease the front head every 3 hours with the breaker upright against the tool. Every day (or 10 hours) check the nitrogen pressure and retighten the bracket bolts. Every week (or 50 hours) retighten the through bolts and measure the tool to front cover clearance. After the first 10 hours, retighten every bolt and nut.
First greasing, before the first job
- Grease the tool shank and the impact area of the tool before it goes into the front head.
- Grease the grease nipple on the front head. Keep the breaker upright against the tool so the grease works in between the tool and the inner bush.
- Check the oil level in the machine tank and check the bolts for looseness.
- Check that the back head and the accumulator are charged to the specified nitrogen pressure. Use nitrogen only, with a charging gauge. The pressure for your model is in the manual (section 5-7).
- After the first 10 hours of work, retighten all bolts and nuts (section 5-12).
The manual recommends an NLGI No. 2 grease and adapts the interval and amount to tool wear and working conditions.
Routine
| When | What |
|---|---|
| Every 3 hours | Grease the front head. Check hydraulic oil temperature, piping and hose connections, working condition and the tightness of fasteners. |
| Every 10 hours or daily | Remove rough skin on the tool and tool pins. Check the nitrogen pressure in the back head. Retighten the bracket bolts. |
| Every 50 hours or weekly | Check the clearance between the tool and the front cover. Check the hydraulic hoses. Retighten the through bolts. |
| Every 1000 hours or 6 months | Inspection by authorised service staff is recommended: pipe and hose connections, oil filter, accumulator diaphragm, through bolts and tool pins. |
| Every 2000 hours or yearly | As above, plus all seals and the condition of piston, front cover and inner bush. Replace the seals every 2000 hours of actual operation. |
Habits that protect the tool
- Place the tool vertically against the surface and avoid blank hitting. Stop as soon as the object breaks.
- Move the impact point if the object does not break within 30 seconds.
- Do not use the breaker or the tool as a lever, and do not work with the boom or arm cylinders fully extended. Keep at least 100 mm of cylinder stroke.
- Keep the hydraulic oil between 40 and 60 °C. If it goes above 80 °C, check the seals.
- Do not work in water without the underwater kit.
Storing the breaker
Between jobs, plug the hoses and keep dirt out of the pipes. If it will not be used for 3 weeks or more, discharge the nitrogen from the back head and the accumulator, push the piston back, fit the tool, grease every part, especially inside the front head, and store it indoors.
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Frequently asked
How often do I grease a hydraulic breaker?
The manual says every 3 hours at the grease nipple on the front head, adapted to tool wear and working conditions.
What are the bolt torques?
They differ by model: through bolts, bracket bolts and the socket bolts each have their own table in the manual (section 5-12). Use a torque wrench in the specified range.
What nitrogen pressure do I charge to?
It depends on the model and is given in the manual (section 5-7). Use nitrogen only, with a charging gauge. [Contact us](/contact) if the figures in your manual are unclear.
How long may I hit the same spot?
Move the impact point if the object does not break within 30 seconds (section 6-2). Long work in one spot creates stone dust that dampens the impact and can damage the piston seal.
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