Lubrication Points And Types Of Lubricant - Hitachi DH 24PG Repair Manual

Lubrication points and types of lubricant

● Periphery of the Second Hammer [30] (Fig. 17), O-ring (C) [33], and Damper (A) [32]: Apply specified
grease.
● Second Gear [23] and Cylinder Clutch [22] claws: Apply specified grease. (Fig. 18)
● Pin D2.5 [21]: Apply NIPPECO SEP-3A grease.
● Inner circumference of the Cylinder [20] (sliding portion of the piston): Apply specified grease. (Fig. 19)
● Balls of the Reciprocating Bearing [47]: Fill 3 grams of specified grease. (Fig. 20)
● Bore surface and arm of the Reciprocating Bearing [47]: Apply specified grease. (Fig. 20)
● Reciprocating Bearing [47] rotating shaft and Second Shaft [41] spline: Apply specified grease. (Fig. 21)
● Clutch [44], Washer [45], and Change Plate [46] contact: Apply specified grease. (Fig. 22)
● Tooth plane of the First Gear [51]: Apply NIPPECO SEP-3A grease.
● First Gear [51] recess of the Inner Cover [53]: Fill 3 grams of NIPPECO SEP-3A grease. (Fig. 25)
● Metal inner circumference of the Inner Cover [53]: Apply specified grease. (Fig. 25)
● Inner circumference of the Piston [38], inner circumference of the Piston Pin [39], and Piston Washer
[40]: Apply specified grease. (Fig. 23)
● Periphery of the Striker [36] and O-ring D17 [37] for the Striker [36]: Apply specified grease. (Fig. 24)
● Run-off of Ball Bearing 608VVC2PS2L [17] on abutted surface of the Gear Cover [7]: Fill 0.3 gram of
NIPPECO SEP-3A grease. (Fig. 26)
● Oil Seal [9] lip in the Gear Cover [7]: Apply specified grease.
● Washer (A) [25]: Apply specified grease.
● Inside of the Gear Cover [7]: Fill 40 grams of specified grease (grease for rotary hammer). (Fig. 27)
(Apply grease to the tooth plane of Second Gear [23]. Be careful not to let grease run into Cylinder
[20].)
● Inside of the Inner Cover [53] cylinder: Fill 20 grams of specified grease. (Fig. 25)
● Gear Cover [7] Φ20 bore surface and O-ring (S-18) [14] for the Change Lever (13)<12>{12}: Apply
NIPPECO SEP-3A grease.
● Steel Ball D7.0 [19]: Apply NIPPECO SEP-3A grease.
Fig. 16 ● Specified grease (for rotary hammer)
CAUTION: The viscosity and consistency of this specified grease are optimized for the rotary
hammer models in order to improve service life. Therefore, applying the ordinary
grease used for conventional models (DH 24PB3, etc.) to the Models DH 24PG,
DH 26PB and DH 28PBY may dramatically shorten its service life.
500 g
-12-
60 g
Service code
500 g: 335781
60 g: 335782