DISASSEMBLING THE CHAIN
To disassemble an endless riveted chain, you have to cut one link. The easiest way is to cut one link of the lower strand of the chain, where there is more room to operate.
Take the Nr.7 Chain Breaker (P/N 805330), then:
a) unscrew Bolt 1 until its tip is no longer visible;
b) unscrew the Shoulder Bolt 2; fit the chain into the Chain Breaker so that a pin is aligned with bolts 1 and 2;
c) screw the Shoulder Bolt 2 in until the chain position becomes fixed;
d) turn slowly Bolt 1 to force the chain pin out of its plate; (be sure that the tip of Bolt 1 pushes exactly on the head of the pin); proceed until the chain pin is disassembled from its plate and pressed out of the chain for at least one third of its length;
e) repeat the same operations a)-b)-c)-d) on the other pin of the link; remove the Chain Breaker and disassemble the cut link from the chain;
f) the chain is now open.
Note: the Nr. 7 Chain Breaker is factory set for disassembly of 15,875 mm (5/8") and 19,05 mm (3/4") pitch chains; the handle of Chain Breaker contains the Bolt and the Shoulder Bolt to disassemble the 12,70 mm (1/2") pitch chains.
If a Nr. 7 Chain Breaker is not available, the chain can be cut with the help of the general purpose Chain Breaker Nr. 1 (P/N 805000):
a) fit the Chain Breaker on the chain, making sure that the tip of punch 1 is perfectly centered on the head of the chain pin to be disassembled;
b) actuate punch 1 by rotating rod 2, and push the chain pin head out of its plate;
c) repeat the operations on the second pin of the link to be disassembled.
WARNING! When the Nr. 1 general purpose Chain Breaker is used to disassemble O-Ring chains , it is necessary to use the special shaped spacer (which is supplied together with Regina rivet links or connecting links spare parts); this spacer must be inserted under the link plate to be disassembled in order to protect the O-Rings from being squeezed by the action of the Chain Breaker, and to avoid the partial disassembling of the bushes of the roller link. The use of the shaped spacer is necessary to avoid damages to the chain.
ASSEMBLING THE NEW CHAIN
By using an old connecting link fork or rivet link fork, connect temporarily one end of the old chain with one end of the new chain;
then, slowly pull the other end of the old chain until the new chain rides around the front sprocket; proceed until the new chain reaches the rear sprocket.
Disassemble the old connecting link fork and eliminate it along with the old chain.Wrap both ends of the new chain on the rear sprocket so as to position them one after the other on two consecutive teeth.
Install the new rivet link.
WARNING! The rivet link is already lubricated with a special grease to ensure high performance and long life: be careful to ABSOLUTELY AVOID removal of the lubricant from the pin surface, as this could seriouly compromise the performance of the rivet link. This caution is particularly important with O-Ring chains, as they cannot be re-lubricated.
NON O-RING CHAINS
a) Install the new rivet link fork into the two ends of the chain from the back side, taking care not to touch the pins in order not to remove the lubricant; a) Check that the new rivet link fork has the o-rings (one for each pin) fully inserted until they touch the plate;
b) Install the new rivet link fork into the two ends of the chain from the back side, taking care not to touch the pins in order not to remove the lubricant;
c) Install the other two o-rings over the pins until they rest on the extended ends of the bushings;
Rotate the rear wheel until the rivet link is positioned in the lower strand of the chain where you have more room to operate.
FIXING THE RIVET LINK
The rivet link must be closed, by press-fitting the link plate with the use of the Regina Press-Fit-Tool.
Use tool P/N 805181 for 12,70 mm (1/2") pitch chains,P/N 805182 for 15,875 mm (5/8") pitch chains,P/N 805183 for 19,05 mm (3/4") pitch chains.
a) Place the link plate between the holding blades 2 of the link plate carrier 1; check that it is fully inserted.
b) Fit the tool on the chain, inserting the centering pin 3 between the chain rollers in correspondence with the rivet link.
c) Turn by hand the bolt until the link plate holes reach the heads of the pins; tighten the bolt by hand making sure that the pins remain well aligned with the holes of the link plate.
d) With a ratchet wrench, tighten the link plate to full depth on the pins. Do not over press.
e) Unscrew the bolt and detach the chain.
Note! The Regina Press-Fit Tool is factory set to operate with the most common chains.
When servicing chains with oversized roller diameter, such as types 136.2 ORP (532) or 138.2 ORS (632), it is necessary to position the centering pin 3 to its lower width: this setup is obtained by loosening the fixing screw 5 and by lowering the centering pin 3.
When servicing ORT and ORP chains, where the pin link plates have the same profile as the roller link plates, it is necessary to place the plate 4 on the bottom of the Press-Fit-Tool (fitted on the centering pin 3).
RIVETING THE RIVET LINK
Use the Regina Rivet Tools:
P/N 805184 for 12,70 mm (1/2") pitch chains,P/N 805185 for 15,875 mm (5/8") pitch chains,P/N 805186 for 19,05 mm (3/4") pitch chains.
a) Pull plate 8 to open the positioning rods 9; place the chain into the tool so as to align punch 10 with the first pin to be riveted release plate 8. The chain will be correctly inserted into the tool and kept in place by rods 9.
b) Push by hand punch 10 to touch the head of the pin.
c) With a hammer, give a sharp blow to punch 10 so as to deform the head of the pin.
d) Rotate punch 10 by 45° approx. and repeat the operation.
e) Rotate again punch 10 by 45° approx. and repeat the operation two more times.
f) Release the positioning rods 9 by pulling plate 8; remove then chain and the place it again into the tool to correspond with the second pin;
repeat the procedure.
g) Check that the chain link is free to articulate smoothly and that the O-Rings are not damaged.
Note! The Regina Rivet Tool is factory set to operate with the most common chains.
When servicing chains with oversized roller diameter, such as types 136.2 ORP (532) or 138.2 ORS (632), it is necessary to position the centering pins 11 to their lower width: this setup is obtained by loosening the fixing screws 12 and by lowering the centering pins 11.
After the riveting, the chain must be correctly tensioned by following the instructions of the next paragraph