Guide To Correct Use Of The Puma; Demounting - Cormach PUMA Manual De Uso Y Mantenimiento

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GUIDE TO CORRECT USE OF THE PUMA

WARNING
Read the "PRACTICAL HINTS, RECOMMENDATIONS AND
USEFUL INFORMATION" section above with great care.

DEMOUNTING

1 • Loading the wheel (ig.9a)
- Place the wheel on the lift (A).
- Lift the wheel by operating the pedal 1 (B).
- Transfer the wheel to the turntable (C) by hand and lower
the lift by operating the pedal 2.
- When positioning the wheel on the turntable, also take care
to align the mobile pin, on the edge of the turntable, in one
of the ixing bolt holes in the rim (D).
2 • Clamping the wheel on the turntable (ig.10)
- Fit the clamping device into the drop centre of the wheel
(A).
- Turn the device for correct engagement with the turntable
(B).
- By hand, move the centring cone into pos. on the rim by
moving the retainers 1 (C).
- Tighten the clamping device by turning the handles 2 clock-
wise (D).
3 • Delating the tyre (ig.11)
- Undo the valve and fully delate the tyre.
4 • Positioning the bead breaker (ig. 12)
- Move the bead breaker unit from the rest position to the
working position by moving using the handle 3 (A).
-Move the disc towards the rim:
- swing horizontally by hand (B)
- move vertically using control 1 (C)
- When the chosen distance is reached (a gap of 2-3 mm
should be left between the edge of the rim and the bead
breaker disc), operate the control 2 to prevent further hori-
zontal movement (D).
5 • Breaking the top bead (ig.13)
- Preload the bead breaker disc using control 2 (the tyre
should be pressed down by about 5 mm).
- Start disc penetration (control 1) and then start wheel rotation
(pedal 3), while at the same time lowering the bead breaker
disc a little at a time (control 2).
- Perform at least one complete revolution to break the bead.
The rim bead should be greased during rotation.
- Release the penetration control 1.
6 • Tilting the bead breaker unit (ig.14)
- Move the bead breaker unit to the rest position (A).
- Press the button 1 and guide the bead breaker unit during
rotation through 180° until it engages again (B).
- Return the bead breaker unit to the working position.
7 • Breaking the bottom bead (ig. 15)
- Apply pressure to the tyre with the disc using control 1 (A)
(the tyre should be pressed down by about 5 mm).
- Obtain disc penetration by keeping button 2 pressed, start
to rotate the wheel (pedal 3) and at the same time raise the
bead breaker disc a little at a time (control 1) until the bead
is completely broken (B). The rim bead should be greased
during rotation.
- Release the penetration button (2) and lower the disc using
control 1 (C).
7a • Tilting the bead breaker unit (ig.15a)
- Move the bead breaker unit to the rest position (A).
34
- Press the button 1 and guide the bead breaker unit during
rotation through 180° until it engages again (B).
- Return the bead breaker unit to the working position.
8 • Positioning the tool (ig. 16/17)
- Move the tool head into the working position (control 1).
- It may be useful to press the tyre down to make room for
the tool.
- Release the tool by pulling block 2 towards you (A).
- For correct tool positioning, the insert 3 must be against the
edge of the rim in the point where the vertical wall starts
(C).
- Press the block 2 to ix the tool position (D).
9 • Engaging the top bead (ig.18) A-B-C-D
- Maintaining the pressure of the bead breaker disc on the
tyre, create enough space to allow the demount tool to be
rocked.
- Using control 1, rock the demount tool (A-B-C-D).
- It is important to rotate the turntable slightly to facilitate
engagement of the bead.
- For easier bead engagement, it might be very helpful to use
the bead breaker disc on the underside of the tyre (D).
- To do this, repeat the steps up to point 7a.
10 • Demounting the top bead (ig.19)
- Check that the tool has engaged with the tyre bead.
- Operate control 1 to prepare for the subsequent demounting
(A) (this must be done with the wheel at a standstill and not
rotating).
- Check that the bead of the tyre has not slipped back into
the rim on the upper side. If necessary, use a clamp and/or
bead presser for assistance (ig.34A).
- Now, and only now, operate the pedal 2 until the bead is
completely demounted (B).
- Here again, it might be helpful to use the bead breaker disc
on the underside of the tyre (ig.20).
- During demounting, if the tyre should tend to slip on the
edge of the rim, the HELP accessory supplied can be used
(see "PRACTICAL HINTS, RECOMMENDATIONS AND
USEFUL INFORMATION").
11 • Engaging the bottom bead (ig.20)
(Demounting using the tool head)
- Place the tool on the edge of the rim (A).
- Push the bead breaker disc against the bottom bead (B)
using control 1.
-Using control 2, operate the hook and engage the bottom
bead of the tyre (C-D).
- Operate the pedal 3 to rotate the wheel until the tyre is
completely demounted from the rim (E).
12 • Demounting the bottom bead (ig.20a)
(Rapid system when possible)
- Operate control 1 and raise the bottom bead of the tyre (A)
until it is level with the top bead of the rim (B).
-Obtain disc penetration by keeping button 2 pressed (C).
- Keep button 2 pressed, start to rotate the wheel (pedal 3)
and at the same time raise the disc a little at a time (control
1). Rotate until the tyre is completely demounted.
12a • Demounting the bottom bead (ig.20b)
- For reverse rims the disc stroke range can be increased by
turning the bead breaker and tipping the disc over. (ig.3 - 4).
13 • Demounting completed (ig. 21)
- When demounting is completed (A) release the penetration
button (2) and lower the bead breaker disc (control 1) (B).
- Bring the bead breaker unit to the rest position (C) by press-
ing button 3.