Service Manuals, User Guides, Schematic Diagrams or docs for : MAKITA 51018-WW-1
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T ECHNICAL INFORMATION 51018
Subject Changes on change plate, spindle and some relevant parts
For Models HP1500, HP1510, HP1501
Description As described below, the parts in the subject have been changed for improvement in
endurance.
Current New
1' 1. Against seizure of spindle and cam;
1
A plane bearing is added to the cam complete.
2'
Diameter of the cam holder's hole which
2
6 receives the cam is enlarged. Inner and outer
diameters of the cam is enlarged.
3 3' 2. Against abrasion of change plate in drilling
mode; Pin 4 is added to disperse the load on the
4 4' change plate (surface contact of pin 4 while
point contact of steel ball 4.8). The change
7 plate is improved in hardness. The grease
5
stocked around the steel ball makes lubrication
5' life longer.
1 cam holder 1' cam holder (reformed)
2 cam 2' cam (reformed)
3 spindle 3' spindle (reformed)
4 steel ball 4.8 4' steel ball 3.5 (changed to smaller one)
5 change plate 5' change plate (reformed and hardened)
* Cam holder complete consists 6 plane bearing (added)
of 1 and 2 7 pin 4 (added)
* Cam holder complete consists of 1', 2' and 6.
Important)
When replacing these parts be sure to fill up the hole of the spindle with grease for longer Grease here depression
librication life before setting the steel ball 3.5 and the pin 4 in place. Also provide enough grease
on the surface of the change plate where it contacts with the pin 4 (the shaded area of the change
plate as illustrated on the right).
change plate
(view from the spindle side)
Interchangeability(I/C)
Item No. Current part Q'ty I/C New part Q'ty Note
23 Change Plate Change Plate
1 No 1
344112-2 344419-6
Spindle Spindle
17 1 No 1
322674-0 322900-7 No interchangeable
22 Steel Ball 4.8 Steel Ball 3.5 as a set
1 No 1
216002-8 216001-0
37 Pin 4
256251-5 1
Cam Holder Complete <= Cam Holder Complete
25 1 1
152473-4 152529-3
Note
Interchangeability mark; <= means that the new part can be substituted for the current.
Implementation
From Dec., 1995
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