PERMON s.r.o. VKP 95-1 – OPERATION MANUAL PAGE 9
Disassemble the backhead assembly. Remove the rubber check valve seat, check
valve and spring.
Assembly
Important: Before assembling the hammer, insure all components are inspected and
restored to the best possible condition or replaced, if needed.
Insure all components are thoroughly cleaned to remove any residual emery dust,
steel flings or corrosion. Thread lubricant MUST be used on all threaded connections
and bit shank and splines. Coat all new or reworked components with rock drill oil.
When the hammer is put back into service, this coating protects parts, until the line
oil starts injecting the proper amount of oil into the air stream. All threaded joints
must be properly tightened before returning the hammer into service. With the
hammer assembled and immediately before returning to service, pour - for some
rock drill oil into the hammer. Fill the level of the backhead, then release the check
valve allowing the oil to flood the hammer.
Storage
Disassemble the hammer completely.
Thoroughly clean and repair all components.
Reassemble the hammer immediately, keeping the joints loose.
Coat the entire hammer, OD and ID, with a light film of rock drill oil. Coat all threads
with thread lubricant.
Install thread protectors.
Seal each end of the hammer to keep dirt and dust out of the hammer.
Always store the hammer in a suitable protective container in a dry location.
Grease the bit shank.
Place a protective cover on top of the bit to prevent foot valve breakage.
Always store the bit in a suitable protective container in a dry location.
PERMON s.r.o.
Roztoky 217
27023 Krivoklat
Czech Republic
Tel.: +420 313 558 145
Fax: +420 313 558 313
Email:
www.permon.cz
