4
F I L L A N D B L E E D I N S T R U C T I O N S
(see Parts List)
To replace a small amount of oil in the tool, remove cap screw (49) from side of head cylinder (51), attach the Cherry® air
bleeder (700A77), connect the tool to the air line and cycle several times. This will ensure the removal of any air from the
hydraulic system and its replacement with fluid. Should it become necessary to completely refill the tool (such as would be
required after the tool has been dismantled and reassembled), take the following steps:
1.
Stand tool upright and connect to air line. Hold trigger down
and when air piston (31) bottoms, disconnect tool from air
line.
2.
Head piston (54) should move to the rear position during
Step 1. If it does not, push the piston back manually.
3.
Remove the screw (49) and the Stat-O-Seal (50) from the
side
of the head cylinder (51). Connect the pressure oil can
filled with automatic transmission fluid Type “A”. See chart.
4.
Remove the screw (49) and the Stat-O-Seal (50) from the
rear
of the head cylinder (51). Force the fluid into the tool
until it flows out the rear hole. Position the tool in such a way
that the rear hole is the high point. Keep pumping the oil until
all air bubbles are out. Place the screw (49) with the Stat-O-
Seal (50) into the
rear
hole and tighten.
5.
Remove the screw (49) and the Stat-O-Seal (50) from the
top
of the head cylinder (51). Force the fluid into the tool until it
flows out from the top hole. Position the tool in such a way that the top hole is the highest point. Keep pumping oil until
all the air bubbles are out.
6.
Disconnect the pressure oil can from the
side
hole of the head cylinder (51). Replace screw (49) and Stat-O-Seal (50)
and tighten.
NOTE:
For the purpose of bleeding, it is not necessary to remove the pressure relief valve (74) from the head.
Do not
remove
any of the hex socket set screws from the head or the handle.
7.
Holding a cloth over the tool head, attach tool to air line. Excess oil and air will be discharged into cloth. Place the screw
(49) with the Stat-O-Seal (50) into the
top
hole and tighten.
T R O U B L E S H O O T I N G
1. Check the airline for correct pressure at the tool. It must be
90 to 110 PSI (6,2 to 7,6 bar).
2.
Check the tool for lack of oil (see Fill and Bleed
Instructions).
3. Check for oil leakage:
Oil leaking around the cap screw (49) in the head
indicates that the screw is loose or the Stat-O-Seal (50)
needs replacing, side, top and rear.
If oil should leak through the by-pass hole at the base of
the handle (1) the O-rings (19) are worn or damaged.
Oil leaking from the front of the head (51) indicates that
O-rings (52) are worn or damaged.
4. Check for excessive air leakage from the air valve:
If spring (4) is broken or dislodged, air will bleed
directly through the bottom of the air valve and the head
piston retreats to its full stroke without returning. See air
valve instructions on Page 5.
If O-ring (9) on plug (10) is worn or damaged, replace.
If O-rings (2) on valve spool (6) are worn or damaged,
replace.
5. Check movement of the head piston (54). If it does not
move freely or is slow in operation:
O-rings (52), (56), (57), and (59) may be damaged and
require replacement.
Piston (54) may be mechanically locked due to damaged
parts.
If O-Ring (17) on power piston (15) is worn or damaged,
replace.
Muffler (11) or air filter (7) inside valve spool (6) may
be plugged with dirt. Clean them thoroughly with normal
solvent and back-blow with compressed air.
Hole in metering screw (8) in valve spool (6) may be
blocked or damaged. Hole diameter should be 0.028"
(0,711 mm). Clear and size or replace valve spool (6).
6. Stem sticks in the pulling head:
Pulling head components need maintenance.
Disassemble the pulling head, clean and replace worn
parts. Reassemble following pulling head instructions.
Spent rivet stems are wedged side by side in the pulling
head from failure to eject stem from tool prior to inserting
next fastener. Disassemble the pulling head, remove
stems and reassemble following pulling head instructions.
