5
F I L L A N D B L E E D I N S T R U C T I O N S
To replace a small amount of oil in the tool, remove cap screw (14), 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 re-
assembled), take the following steps?
1.
Remove head assembly (1) from handle (31) by
unscrewing cap screws (50).
2.
Fill handle assembly (31) with the recommended oil to within
1/8" (3.175mm) of the top of the handle casting.
3. Place head assembly (1) on handle (31), being sure gasket
(49), and O-ring (48), are properly in place. Tighten cap
screws (50) uniformly to prevent leakage around gasket.
4. Remove cap screw (14) and attach the Cherry air bleeder
(700A77). Connect the tool to the air line and cycle a number of times. This will ensure the removal of any air from its hydraulic
system and its replacement with fluid.
T R O U B L E S H O O T I N G
1. Check the air line 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 (14) in the head
indicates that the screw is loose or the Stat-O-Seal (13)
needs replacing.
If oil should leak through the by-pass hole at the base
of the handle (31) the O-rings (33) are worn or
damaged.
Oil leaking from the front of the head (1) indicates that
O-rings (2) are worn or damaged.
4. Check for excessive air leakage from the air valve:
If spring (39) 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 6.
If O-ring (44) on plug (45) is worn or damaged, replace.
If O-rings (35) on valve spool (41) are worn or
damaged, replace.
5. Check movement of the head piston (4). If it
does not move freely or is slow in operation:
O-rings (2), (5) and (7) may be damaged and
require replacement.
Head piston (4) may be mechanically locked due
to damaged parts.
The O-ring (35) on power piston rod (36) may
be damaged; replace.
Muffler (46) or air filter (42) inside valve spool (41)
may be plugged with dirt. Clean them thoroughly with
normal solvent and back-blow with compressed air.
Hole in metering screw (42) in valve spool (41) may
be blocked or damaged. Hole diameter should be
.028" (.7112 mm). Clear and size or replace valve
spool assembly (40).
6. Rivet stem sticks in the pulling head:
Pulling head components need maintenance.
Disassemble the pulling head, clean and replace
worn parts. Reassemble following instructions given
in the corresponding Tool Sheet.
Spent rivet stems are wedged side by side in the
pulling head. Disassemble the pulling head, remove
stems and re-assemble reassemble following
instructions given in the corresponding Tool Sheet.
Содержание 747-002
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