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E N G L I S H
4.5 MODULAR HEAD BUSH STOPS
Bush stops are fitted to reduce the stroke length of the tool thus the tool cycle time and shock loads. Minimising
shock loads will increase the efficiency of the tool and will prolong the life of the mandrel.
Each tool is supplied with three buffer stops already fitted. It may be necessary to remove one or more of these to match the
length of the fasteners to be placed so that when in the fully back position, the mandrel head lies just inside the nose jaws.
Use the table below to ascertain the number of buffer stops recommended for your fastener. First find the relevant diameter
and within that section select the correct length code. These two digits are the last two of the fastener part number.
Read the corresponding number of buffer stops in the table below.
Fastener Diameter Code
Fastener length code
Number of fill buffer
stops
Fastener Diameter Code
Fastener length code
Number of fill buffer
stops
For extra buffer stops, 1/8" thick, order part number 70500-02016
Adjusting the number of Buffer Stops 48
•
Ensure that the air supply to the tool is disconnected.
•
Remove Modular Head Assembly from the mounting plate/Machine Top Plate.
Hold Body 38 in a pair of soft vice jaws and unscrew Tail Jaw Housing 42. This exposes the Piston Nut 47 and Locknut
•
46.
•
Add or remove, as applicable, Buffer Stops in accordance with the table above. Replace Piston Nut 47 and Lock Nut 46
onto the thread of Piston 41. Using spanners, lock the Nuts together, ensuring that the front face of the Locknut 46 is
flush with the front face of Piston 41.
Refit Tail Jaw Housing 42, tightening it onto Body 38.
•
•
Remove from vice and refit Modular Head Assembly into position.
Note:
No oil loss will be expected during the above operation, therefore re-priming is not necessary.
Item numbers in bold refer to the general assembly drawing and parts list for 70500-02000 (pages 21-22).
12
03 (3/32", 2.5mm and 2.8mm)
04
06
08
10
3
3
2
2
05 (5/32")
05/06 07/08 09/10 11/12 13/14 15/16 07
3
3
3
1
IMPORTANT
12
14
16
18
20
1
0
0
0
0
06 (3/16")
09
11
1
0
3
2
1
O R I G I N A L I N S T R U C T I O N
04 (1/8")
22
04
06
08
10
0
3
2
2
2
08 (1/4", 6mm)
13
15
17
09
11
1
0
0
2
1
12
14
1
1
13
15
0
0
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