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7. Maintenance
IMPORTANT!
Always follow the instructions described in this section when performing maintenance work
on the hammer. Neglecting the maintenance schedule can cause damage to the hammer.
This section of the manual describes how to care and maintain your hammer. Check every item before and
after operating the hydraulic hammer to always keep the hammer in good condition.
Neglecting the maintenance schedule and improper maintenance can cause damage to the hammer and the
carrier.
7.1. General Information
Whenever maintenance work is carried out, always follow the basic rules:
Absolute cleanliness and great care are basic and essential matters in the handling of any hydraulic
components of the hammer.
(Dirt is the worst enemy of hydraulic systems.)
Hammer parts should be handled carefully and stored clean using lint free cloth or cleaning papers for
hydraulic use.
Do not use anything other than the correct cleaning fluid for cleaning hydraulic parts.
(Never use water, steam, paint thinners or acid fluid)
Sealing components, such as O-rings, packings and wipers in the hydraulic hammer should be oiled with
clean hydraulic oil before assembling. Especially, for sealing parts used for tight fitting, apply lubricant
paste onto the sliding portions of the seals.
Always release the prefill gas in the back-head and accumulator before carrying out maintenance or
repair work to the hydraulic hammer.
Only the proper tools should be used for maintenance. Use of improper tools may cause personal injury,
or damage to the hammer.
Unauthorized alteration on the hammer may cause the hammer serious troubles or reduce hammer life
and performance. PRODEM cannot guarantee these cases.
Since the hydraulic hammer is a precision machine, never disassemble the power-cell and main moving
parts. If it needs disassembly, contact your local PRODEM dealer. If the customer disassembles the hammer,
we don’t take responsibility for it.
Prior to maintenance work, perform the following sequence:
1. Put the hammer in a stable position on a level surface, for easy maintenance and repair.
2. Turn off the carrier.
3. Shut off the stop valves.
4. Disconnect the hoses if needed and seal them with plugs to prevent entry of impurities.
In special application such as: tunneling, scaling, operating in ironwork, underwater use, etc., service interval
is considerably shorter than usual usage.
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