8
Chain Guide Profiles 8 must be pushed into the profile grooves before the
Chain Reverse Units are fastened to the frame profile. Measure the length
of Chain Guide Profiles 8 so they overhang each side of the frame profile by
25 mm. This overhang guides the Chain into the Chain Reverse Unit. Machine
the Chain Guide Profile as shown in the figure below for a length of 60 mm.
This is where the Chain will be inserted into the guide and sealed. It may be
expedient to locate this partial opening on the top of the chain guide.
Basic construction of the Chain and Chain Reverse Unit
Screw the Chain Reverse Unit Tensioning Blocks to the end face of the frame
profile. To do this, tap an M8x16 thread into the core bores of the profile. Push
the Chain Reverse Unit fully onto the Tensioning Block and screw it loosely
into place using M6x35 clamping screws.
The Chain Carrier connects the drive chain to the carriage. To make this
connection, insert the chain pick-up into the desired position on the Chain and
screw it tightly with the connecting block. Next, position the carriage over the
connecting block and screw it into place in the centre.
Introduce the Chain into the Chain Guide Profile at the point you machined
earlier. A drift pin can be used to draw the first link in the Chain through the
guide and into the Chain Reverse Units.
Pull the two end links of the Chain out of the chain guide at the prepared
point and connect them with Chain Link ½″. It may be expedient to use
needle-nosed pliers to bring the chain links together, as these can be inserted
between the rollers of the end links. Now insert the two-part Chain Link ½″
into each end roller and connect the two.
Adjust the chain tension by tensioning the 13 A/F clamping nuts between
the Tensioning Block and Chain Reverse Unit. Tighten the two M6 clamping
screws (tightening torque T
T
= 10 Nm) to fix the Chain Reverse Unit in this
position.
