BT REFLEX RR B7-8C - 36.3.9 Damage; 36.3.10 Damaged discs

T-code Valid from serial number
403-414, 669-671, 716-718 713962-
Date Order number
2005-06-01 218920-040
36- 4 Service Manual REFLEX RR B/E, RR B/E CC © BT Europe AB
Main lift chain system – 7120
Chain inspection
Wear to the bolts and around the holes on the discs are a reason why
the chain stretches. The chain should be replaced if stretching is
more than 2%.
36.3.9 Damage
The chain should be replaced if damaged in any way.
36.3.10 Damaged discs
If a disc has broken on the chain, this can be due to overloading or cor-
rosion.
The chain should be replaced.
Type of
chain
Nominal
disc height
H2 ( mm)
Minimum
disc height
H3 (mm)
Pitch P
(mm)
Nominal chain
length for 20/30/
50 discs (mm)
Maximum permitted
chain length for 20/
30/50 discs (mm)
3/4”, 2x3 17.8 16.9 19.05 381/572/953 389/583/972
3/4”, 3x4 17.8 16.9 19.05 381/572/953 389/583/972
3/4”, 4x6 17.8 16.9 19.05 381/572/953 389/583/972
1”, 4x4 23,6 22,4 25,4 508/762/1270 518/777/1295
1”, 6x6 23,6 22,4 25,4 508/762/1270 518/777/1295
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