Material kept
in open for months gets rusted and laden with dust. Check this out in shell shop. Due to lots of corrosion in the bottom, some
machining will again be required before fitment.
Rust ridden
bottom.
Above is the
photograph of one such cab.
Following shortcomings of TM to be looked into:-
- Less commutator slot depth.
- Slack insulators in TMs.
It is to be seen that
commutator slot depth in TMs is not less than standarad.
Problem of
slack insulators, need to be watched out.
Rocker rings
of TM should be inspected.
Regarding unsuitable Centre Pivot of Casnub bogies : problem of blow holes may be found.
Problem of
Mica getting broken in commutator need to be inspected in the shop.
It can be seen
that due to Mica getting cracked in between slots( while fixing copper bars),
the gap between two slots gets reduced which makes commutator unusable.
Commutator
Spider is to be inspected as there can be blow holes/ spongy castings/less
material while machining.
Dynamic seasoning
plant for commutator should be inspected. Theres is a standard RPM (say 3050) at which all plants
should be working . Less than that
may result in less seasoning.
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