SkyTrak 6042 Operation Manual - Manual (Page 168)

166 Model 6042 Origin 2/04
General Maintenance
Turning or Protruding Pins
Highly loaded chain, operating with inadequate lubrication can generate
abnormal frictional forces between pin and link plates. When chain is
allowed to operate in this condition, a pin or series of pins, can begin to
twist out of a chain, resulting in failure.
Examine the pin head rivets to determine if the “VEE” flats are still in
correct alignment (1). Chain with rotated/displaced heads (2) or
abnormal pin protrusion (3) should be replaced immediately.
DO NOT attempt to repair the chain by welding or driving the pin(s)
back into the chain. Once the press fit integrity between outside plates
and pins has been altered, it cannot be restored.
Any wear pattern on the pin heads or the sides of the link plates
indicates misalignment in the system. This condition damages the chain
as well as increases frictional loading and should be corrected.
Distorted or Battered Link Plates
Distorted or battered link plates (4) on a leaf chain can cause tight joints
and prevent flexing.
MM2060
3
2
1
MA9340
4