Service guide
March 2001
11
Motor 3
Adjustment of timing belt
5551 066:
Make sure the belt is not
transmitting torque during the
procedure (lower the Boom to
the bottom position).
With the motor turned off
loosen all 3 motor standoff
screws (inside the side plate).
Move the unit until the timing
belt has no preload and
minimum slack (picture) and
tighten the screws.
Test the tension by turning on
the SpinJet, switch it to the
Double mode and intersect the
beam of PS01. Motor 3 will
now lower the boom until the
Reset-button is activated.
Too much tension gives more
noise and possibly stalling
motor during lowering.
Too much slack will cause the
belt to disengage the teeth of
the motor pulley at a slight load
of the Boom during raising.
Repeat the positioning if
required.
5550 005 Assy, motor
w/pulley and connector
Motor 1, 2 and 3 are identical.
Motor with
pulley and
harness
Timing belt
5551 066
(motor 3)
with
appropriate
slack
Timing belt
5551 066
(motor 3)
with too
much
slack.
