KEY POINTS ON SEAL PROTECTION Rebuilding Track Care is needed when welding the lug material to shoe grouser while the shoe is installed to the link assembly. If the grouser portion is shaped using gas cutting and lug welding is carried out continuously for one shoe, the heat will be concentrated in one place. This will mean that the seal will be subjected to high temperature and may deteriorate, so it is necessary to consider carefully the procedure to follow. Example of method of dissipating heat To prevent the heat from concentrating at the seal at one place, divide the processes for rebuilding the lug into several parts, and carry out the work on every 2nd or 3rd shoe.
When bolt is forced to cut by gas, keep temperature under 80 0 C at seal portion to avoid seal deterioration, and protect spatter entering into the link gaps. - 7 -