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FILL AND BLEED INSTRUCTIONS
To replace a small amount of oil in the tool, connect the tool to the air line, remove cap screw (15). (CAUTION: Do not depress
trigger without cap screw or air bleeder attached.) Attach the Cherry air bleeder (700A77), and slowly cycle tool 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. After removing the head assembly, fill handle assembly (18) with the recommended oil to within 1/8” (3 mm) of the top of the handle
casting.
2. Replace head assembly, being sure gasket (51) and O-ring (50) are properly in place. Tighten cap screws (49) uniformly to prevent
leakage around gasket.
3. Remove cap screw (15) then attach Cherry Air Bleeder (700A77). Bleeder (700A77) should not be filled past safety line on bottle.
4. Connect tool to air line, purge system of air by cycling ten times slowly or until bottle is free of air bubbles to fully circulate fluid
through the hydraulic system.
DO NOT depress trigger while disconnecting the Air Bleeder and replacing the cap screw (15).
TROUBLESHOOTING
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 for oil leakage:
Oil leaking around the cap screw (15) in the head
indicates that the screw is loose or the washer
gasket (14) needs replacing.
If oil should leak through the by-pass hole at the base
of the handle (18) the O-rings (30) are worn or
damaged.
Oil leaking from the front of the head (1) indicates that
O-rings (2) are worn or damaged.
3. Check for excessive air leakage from the air valve:
If spring (20) 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”.
If the O-ring (25) on plug (26) is worn or damaged,
replace. If O-rings (21) on valve spool (22) are worn or
damaged, replace.
4. Check movement of the head piston (4). If it does not move
freely or is slow in operation:
O-rings (56), (7), (8) and (9) may be damaged and require
replacement.
Head piston (4) may be mechanically locked due to
damaged parts.
Muffler (27) or air filter (23) inside valve spool (22) may
be plugged with dirt. Clean them thoroughly with normal
solvent and back-blow with compressed air.
Hole in metering screw (24) in valve spool (22) may be
blocked or damaged. Hole diameter should be .028"
(0,7 mm). Clear and size or replace valve spool assembly
(54). Metering screw (24) and filter (23) are not sold
separately.
5. If the rivet stem stick inside the pulling head, or stems slip
during installation, the puling head needs maintenance. Please
refer to the Tool Sheet of the pulling head for details.
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