Snap-On EEWH331A Instructions page 11

Installing the off set mount dismount head
supplied in the Kit
See Figure 2.0-5
P
8) Fit the tool supplied in the Kit (L) on the snap connection
N
for the extension, positioned so that the adjuster screws
(M) are in line with the seats (N) on the hub of the
connection.
Q
9) Screw in the screws (M) on the tool by the same amount,
M L
without tightening fully.
10) Screw in the screw 10x30 (S) with the washer 10x38
(R) by hand, without tightening fully.
11) Fit the assembly formed as described onto the bushing
R
previously fi tted. Tighten the ring nut with the wrench
S
supplied in the kit (Q).
2.0-5
N.B.: Place the mount dismount head in the same position
as the original removed from the tire changer.
Adjusting the mount dismount head
:
See Figure 2.0-6
After the mount dismount head has been fi tted on the
snap connection, it must be adjusted by means of the two
screws (M) to position the mount dismount head correctly
in relation to the wheels on which it is to work.
12) Connect the tire changer to the electricity and
compressed air supplies.
13) Clamp a new rim or a rim in good condition with 20"
diameter on the turntable.
14) Loosen the two screws (M) and the screw underneath
so that the mount dismount head is not rigidly locked in
place but can turn through a small sector relative to the
support hub (P).
15) Move the mount dismount head towards the edge of
2.0-6
the rim, as for normal operation, then lock it in position.
16) Tighten one of the two adjuster screws until the inside
of the claw of the mount dismount head is about 1/25" (1
mm) from the edge of the rim, as indicated by point (X)
and on the opposite side of the mount dismount head the
edge of the tool is aligned with the edge of the rim, as
indicated by point (Y).
17) Tighten both screws, keeping the mount dismount
head in this position. Move the mount dismount head
away from the edge of the rim, then tighten the screw (S
Fig. 2.0-5) under the mount dismount head fully home,
with a torque of 35 Nm.
11
EN
Snap-on EEWH331A