Makita EBH252U Technical Information

Also see for EBH252L: Original instruction manual Instruction manual Original instruction manual Original instruction manual Instruction manual

Makita EBH252U Technical Information Manual pdf 36 page image

6-18 Engine block (cont. - Piston section)6-18-1 ReplacingFig. 6-18-1-1[1] Pinch one end of Clip (2 pcs.) with thin long nosepliers, and slide it out of the groove of Piston.Note: Remove the other Clip from the opposite, in the sameway.Groove of PistonThin long nosepliersClipPistonClipFig. 6-18-1-2[2] Push out Piston pin with a bit of Cordless impact driveror a rod.Piston pina rod/ bitClip (2 pcs.)Fig. 6-18-1-3[3] When Piston ring set* must be replaced:· Do not enlarge the gap more than you need toremove/ assemble.· First, install Piston ring 34, and then, installPiston ring (second) 34, then finally install Pistonring (top) 34.*It consists of Piston ring (top) 34, Piston ring(second) 34 and Piston ring 34.Note: All gaps must not be aligned vertically.Piston ring (top) 34Piston ring (second) 34Note: Piston ring (second) 34 has awhite paint on the right upperend if it is not worn out.Face the white paint upward inassembly.White paintPiston ring 34*PistonNote: Place the gap of Piston ring (top)34 180° away from the gap ofPiston ring (second) 34.Note: Place one gap 120° awayfrom the others.Cross section of PistonSide rail*Spacerexpander*Side rail*Piston ring (top) 34The center has a curve.Piston ring (second) 34Note: Be careful about the direction. The bottom is widerthan the top because of the taper shape.Piston ring 34: It consists of Two Side rails and Spacerexpander.36 / 40