Service Manuals, User Guides, Schematic Diagrams or docs for : MAKITA 49611-ww-1
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T ECHNICAL INFORMATION 49611
Subject Changes on Slider Support and Relative Parts
For Models JR3020(Recipro saw)
Description As in the following Fig.1 and "Details of Changes"
( Fig. 1 ) < Current > < New >
(1) Dust seal 12.7
(1) Dust seal 12
(2) Slider support
(2) Slider support(of resin) (of aluminum)
(3) Linear ball bearing 1228 (3) Plane bearing 12.7
(4) Slider (8) Pin 7 (4) Slider
(8)Pin 7
(7) Plate
(7) Plate(A)
40mm
50mm
(width of slider block) (6) Hex. socket head bolt M5X16
(6) Pan head screw M5X16 (5) Plane bearing 12.7 (5) Plane bearing 12.7
* *Details of Changes on Parts in Fig. 1* * (See List 1 about each part No. of the current/the new.)
Part name Change in Current New
(1) Dust seal Inner diameter 11 mm (7/16" ) 11.7 mm (29/64" )
Note : There's a tiny circle raised on the new dust seal 12.7 for distinction from the current dust seal.
(2) Slider support Material Resin Aluminum
(3) Bearing to hold the Shape Linear ball bearing Plane bearing 12.7
slider 1228(tube type) (block type)
(4) Slider 1) Width of "slider block" 50 mm (1-31/32") 40 mm (1-37/64" )
2) Outer diameter 12 mm (15/32" ) 12 7 mm (1/2" )
(5) Plane bearing 12.7 Setting direction In modified machines, this bearing is turned
round as in Fig. 1; remark the position of
protrusion of its upper side.
(Bearing itself remains the identical )
(6) Screws to fix the plate Shape Pan head screw Socket head bolt
(7) Plate to hold the bearing Shape Curved type Flat type
(8) Pin 7 Hardness The new pin is harder than the current.
Interchangeability(I/C)
( List 1 )
Item No. Current part Q'ty I/C New part Q'ty
*Slider 1 No Slider 1 * As to the replacement
020
168268-5 168281-3 of the current slider,
Slider support 1 No Slider support 1 read carefully
017 415172-2 316765-7 "Repairing of
Dust seal 12 1 No Dust seal 12.7 1 Pre-modified Machines".
016
213170-8 213171-6
Linear ball bearing 1228 1 No Plane bearing 12.7 1
019
211135-4 214161-2
Plate (A) 1 No Plate 1
029
344048-5 341462-6
Hex. socket head
Pan head screw M5x16 4 <= 4
022 bolt M5xl6
911621-2 266086-6
Pin 7 1 <= Pin 7 1
035
256681-0 268012-1
Note
Interchangeability mark: <= means that the new part can be substituted for the current.
Repairing of Pre-modified Machines
1) Slider
The Following modification in Fig.2 has been implemented on the current
slider although its part No. remains the same (168268-5).
( Fig. 2 )
< the Current > < the Modified Current >
Slider block Slider block
50mm 45mm
(1-31/32") (1-49/64")
*Slider block is a component part of the slider,but is not available as a replacement part
becouse it is brazed to the shaft of slider.
Be sure to use only the "modified current slider" for replacement of the current slider.
On receipt of "the modified current slider" , which has been available since July 1995,
your stock of "the current" should be abandoned in order not to let your stock be in confusion.
2) Slider support
In case of replacement of the current slider support , which has been discontinued,
all the current parts in List1 must be replaced by the new parts in list 1 at the same time.
3) Dust seal 12 / Linear ball bearing 1228 / Plate(A)
Remain available for replacement.
4) Pan head screw M5xl6 / Pin7
Should be replaced by the new parts in List 1.
Implementation
From serial No. 13938E
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