Hitachi DH 25PB How to replase grease, Service and repairs, Before replenishing the grease, turn

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◯Replacing carbon brushes: (For parts name, refer to Fig. 1)

Loosen the two set screws and remove the tail cover. Remove the brush caps and carbon brushes. After replacing the carbon brushes, tighten the brush caps securely and to install the tail cover with securely tightening two set screws.

5.How to replase grease

This machine is full air-tight construction to protect against dust and to prevent lubricant leakage. Therefore, the machine can be used without lubrication for long periods.

Replace the grease as described below.

◯Grease replacement period

You should look at the grease when you change the carbon brush. (See item 4 in the section MAINTENANCE AND INSPECTION.) Ask for grease replacement at the nearest HITACHI Authorized Service Center. Proceed for replacement of grease.

◯Grease replenishment

	CAUTION:	Oil cap
	Before replenishing the grease, turn the
	power off and pull out the power plug.
(1)	Disassemble the oil cap and thoroughly wipe
	off the old grease inside. (FIg. 19)
(2)	Supply 17.5g (the standard volume to cover
	the connecting rod) of Hitachi Electric Hammer
	Grease A in the crank case.
(3)	After replacing the grease, reassemble the oil	Fig. 19
	cap securely. At this time, do not damage or
	lose the O-Ring.

NOTE: The HITACHI Electric Hammer Grease A is of the lower viscosity type. When the supplied grease tube is consumed, purchase from a HITACHI Autorized Service Center.

6.Service and repairs

All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY.

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