STEPRACE: Service & Maintenance Manual - rev. 1.2
Page 7.21
7.17. DISASSEMBLING THE PRIMARY SHAFT GROUP
Figure 7.17-1
Carry out the procedures described in paragraphs
7.11. “Disassembling the pedal joint” up until
disconnecting the chains from the levers and
7.16. “Disassembling the primary shaft -
secondary shaft chain ”.
1. Rest the pedal chains on the upper part of the
frame.
2. Back off the 4 screws a which fix the
PRIMARY SHAFT to the frame using a 17-
mm wrench.
3. Remove the PRIMARY SHAFT.
Figure 7.17-2
To disassemble the components of the
PRIMARY SHAFT, rest the group on a work
bench:
1. Back off the 2 dowels b which fix the
bearings to the primary shaft, using a 3-mm
hex T wrench.
2. Remove the components from the shaft.
To reassemble the PRIMARY SHAFT and its
components, carry out the above steps in reverse
order.
During reassembly, be careful to
maintain the correct direction of
rotation of the free wheels.
After completing the procedure, adjust
the alignment and the tension of the
PRIMARY SHAFT - SECONDARY
SHAFT CHAIN as described in
paragraphs 8.3. and 8.4. .
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