THIS
MODEL
HAS
BEEN
DISCONTINUED;
SEE
G686B
‐
S
FOR
REPLACEMENT
9
TO ADJUST SETTING:
1. Connect tool to air hose with a minimum of 90 psi and remove
pulling head and sleeve cap (1).
2. Screw small end of 680A159 gage onto head piston (14) until
hand-tight.
3. Cycle tool and hold trigger so that the gage is pulled into the tool
head. Gage point “A” should be flush with the front of tool head
as shown in the sketch.
4. Release the trigger and turn the adjuster knob (37) clockwise to
increase gage protrusion or counterclockwise to decrease gage
protrusion. Cycle the tool after each adjustment and check the
gage point until it lines up flush with the tool head. A limit pin (35)
restricts adjustment to one-half turn of the knob in either direction
from the factory setting.
Note:
The above procedure will adjust the tool to install “A” group
rivets properly. When “B” group rivets are to be installed, adjust the
head as above, and then turn the adjuster knob (37) six turns coun-
terclockwise. (To turn the shift point adjusting screw more than one
turn, remove the limit pin (35) and then replace it approximately dia-
metrically opposite the adjuster knob.) Gage point “B” should be
flush with the front of tool head as shown in sketch. When “C” group
rivets are to be installed, again follow the outlined procedure and
turn the adjuster knob (37) twelve turns counterclockwise. Gage
point “C” should now be flush with the front of tool head as shown in
sketch.
CAUTION:
Always release the tool trigger before turning adjuster
knob. Never back off more than 12 turns or the shift screw (26) may become disengaged from the shift stop (22)
requiring a complete disassembly of the head to replace.
S H I F T P I S T O N C H E C K
The shift piston check is made to ascertain that the movement of the piston is not restricted in any manner. It must be free to move
the amount indicated below in order to obtain proper installation.
1. Connect the tool to an air hose with a minimum of 90 psi and remove the
pulling head and sleeve cap (1).
2. Insert the large (unthreaded) end of 680A159 gage over the head piston
(14) until it seats in the tool head. With trigger released, the front of the
tool head must be within the gage groove recess, Gage Point “D”, as
shown in the sketch.
3. Cycle the tool and hold the trigger. The gage should move forward at the
completion of the cycle and in this position the single gage line, Gage
Point “E”, must be visible or forward of the front of the tool head as shown
in the sketch. The tool may be cycled while holding the gage in position.
4. If the gage points do not align, try bleeding the tool. No other outside
adjustments can be made to correct any deviations from the above gage
positions. Failure of the tool to comply with these gage relationships
indicates incorrect tool performance and it should be sent to the
CHERRY® Service Department for correction.
