Cleco 7STH Série Manuel D'instructions page 9

7STH..
5. What to do, if...
...the tool does not shut-off?
- is the valve stem <34> the correct length (7. Assembly instruc-
tions, fig. 6)?
- is the flow pressure too low?
- is the torque adjustment checked?
- is sufficient oil in the pulse unit? (oil level indicator - 7. Assembly
instructions, fig. 4)
- are you tightening an springable joint (e.g. extension, expansion
fit bolt)?
- is the interior diameter of the air supply line too small?
... the torque scatter is too wide?
- is the flow pressure too high?
- is there air inside the pulse-unit?
- if necessary remove washer <85>
- is free speed too high?
6. Repairs
6.1 Dismounting the Motor Unit
- Clamp the air deflector <32> on the tool in a soft-jawed vice.
- Remove counterclockwise the air strainer <1> with a 12 mm
wrench.
- Remove the countersunk screw <23> and the reverse button <24>.
- Remove the tool from the vice.
- For lever start push housing <15> carefully until plug asm. <21>
becomes visible.
- Push down plug asm. <21> and remove air deflector <7>.
Plug asm. <21> is spring loaded!
- Clamp the tool with A/F 15 mm on the housing <33> in a vice.
- Loosen the housing <104> counterclockwise with a 34 mm wrench
and remove the handle sleeve and pulse unit.
Balls <101> in the handle sleeve are spring loaded!
- Pull gear stage and motor unit.
6.2 Dismounting the Pulse Unit
Caution! Caution!
Disassemble only if filling with oil filling unit <A> is
available!The pulse unit must be cooled to room tem-
perature to avoid skin burning.
- Dismount pulse unit <63> from housing <104>.
- Remove retaining rings, washers, sleeve, balls, compression
spring of the quick change adapter and pin <92> .
- Remove retaining ring <65> from hydraulic cylinder <71>.
- Remove 3 times shim ring <66>, 3 times equalizing washer <67>
and equalizing piston <69>.
- Put the hydraulic cylinder <71> by its hex. (A/F 15 mm) in device
<C2> (7. Assembly instructions, fig. 1).
To avoid endangering health or environment, always
comply with the local regulations for security and prevention
of accidents.
Avoid direct skin contact with oil, grease or glues.
- Loosen the bearing ring <83> with fixture <C1> and remove it.
- Drip oil in container.
For oil disposal follow federal, state, and local standards
and requirements. Do not let oil flow down drains.
- Clamp the pulse unit with attachment in front vertically in vice.
- Pull hydraulic cylinder <71> (fig. 2).
- Remove compression spring <72>, sleeve <73> and 3 times ball
<74>.
- Remove 2 times washer <77> and hydraulic sleeve <82>.
Hydraulic blade <80> is spring loaded!
- Remove hydraulic blades and leaf spring <81>.
- Remove parts mounted inside the hydraulic rotor.
- Press through the piston <75> from drive end.
- Clean all parts.
Caution! Caution!
Use only original CLECO spare parts. Otherwise the tool's
output may deteriorate or excessive maintenance may be
required. If foreign spares are mounted this may void the
warranty.
6.3 Mounting the pulse unit
- Mount piston <75> and o-ring <76> in hydraulic rotor <79>.
- Mount o-rings <78> on hydraulic rotor <79> on both ends.
- Put washer <77> and bearing ring <83> on the long end
(7. Assembly instructions, fig. 3).
- Put hydraulic rotor <79> with long end into socket <C2>.
- Put leaf spring <81> and hydraulic blade <80> into wide slit
(11. Notes, )
- Put hydraulic blade <80> into small slit.
- Mount hydraulic sleeve <82> and washer <77>.
- Fill in three balls <74> and put in the sleeve <73> with compres-
sion spring <72>.
- Put in completely in hydraulic cylinder <71>.
- Screw the hydraulic cylinder <71> with fixture <C1> tighten to
required torque (7. Assembly instructions, fig. 3)
- Put the parts on hydraulic cylinder and safe with retaining ring <65>
(8. Spare parts exploded view)
- Mount parts in hydraulic rotor.
- Fill in oil according to 6.4.
P1799E 07/04 9