BOGIES AND SUSPENSION - South Central Railway
BOGIES AND SUSPENSION - South Central Railway
BOGIES AND SUSPENSION - South Central Railway
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CHAPTER 6 – <strong>BOGIES</strong> <strong>AND</strong> <strong>SUSPENSION</strong><br />
I. IMPORTANT Do’s & Don’ts IN PREPARATION OF ROLL PACKING<br />
Do’s<br />
WAGON MAINTENANCE MANUAL<br />
Page 91 of 121<br />
i. Ensure that cotton waste, used for preparing axle box packing, is according to the<br />
specification laid down.<br />
ii. Ensure before soaking that the cotton waste is free of all foreign matter and that<br />
the required quantity of oil is issued. Soaking and draining should be according to<br />
periods laid down.<br />
iii. Arrangement adoption of steam soaking as it gives a superior soaked waste in a<br />
much shorter period.<br />
iv. Ensure that the soaked waste is transferred to shallow containers and is turned<br />
over, three to four times a day, to ensure uniformity of oil and waste proportions.<br />
v. Ensure that only serviceable waste is reclaimed from the old waste and soaked for<br />
the specified period.<br />
vi. Ensure that as far as possible, the reclaimed and new waste are used in the<br />
proportion of 2:1 for preparation of roll packing<br />
vii. Ensure that the rolls are made according to the sizes laid down and are of suitable<br />
density, neither hard nor soft.<br />
viii. Ensure that a sufficiently large size room, maintained at a high level of<br />
cleanliness and free from dust is used for soaking and reclaiming of cotton waste<br />
and for preparation of roll packing.<br />
ix. Ensure that medium axle oil to IS: Specification No. 1628-71 is used for waste<br />
soaking.<br />
Don’ts<br />
i. Do not curtail the soaking period nor increase the draining period as any<br />
such deviation would give an unsatisfactory soaked waste.<br />
ii. Do not reclaim back rolls, which are invariably dirty and should be<br />
discarded.<br />
iii. Do not store soaked waste in deep containers.<br />
iv. Do not use rolls, which are either smaller in size or less in weight.<br />
j) AXLE BOX PACKING (WOODEN KEEP)<br />
A Wooden keep is placed in axle box between the journal and axle box<br />
faceplate. It is provided to keep the roll packing in position. Its top surface bears<br />
against, the inner surface of the axle box crown. After placing the front roll into<br />
position, the same is pressed downward and wooden keep is inserted making it to bear<br />
with the axle box crown and the wooden keep is set in position. The pressed centre<br />
roll is then released and thus it remains pressed by the bottom surface of the wooden<br />
keep. With front roll being kept into position there is no chance of other rolls getting<br />
displaced from their desired position.
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