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 />
WAGON MAINTENANCE MANUAL<br />
Procedure for replacing worn out brake heads is as under;<br />
Page 11 of 121<br />
i. Remove split pin and washer from brake beam end. Remove pin<br />
securing brake shoe adjuster with brake beam by removing split<br />
pin.<br />
ii. Take brake heads out of brake beam along with brake shoe<br />
adjuster.<br />
iii. Disengage brake shoe adjuster from brake head by providing bolt<br />
after disengaging split pin, nut cover, spring and adjusting piece.<br />
iv. Assemble new brake head with brake shoe adjuster by using<br />
items mentioned in para ( C) as shown in RDSO Drawing No.<br />
WD-88012-S/1.<br />
v. Slide new brake head assembled with brake shoe adjuster on<br />
brake beam end. Engage brake shoe adjuster with brake beam<br />
by using pin and split pin as shown in RDSO Drawing No.<br />
WD-88012-S/1.<br />
vi. Further secure brake heads on brake beam end by putting washer<br />
and split pin as shown in RDSO Drawing No WD-85054-S/4.<br />
III) CASNUB 22 NL, 22NLB & 22HS Bogie<br />
Brake head is integrally cast with end piece casting, which is<br />
welded with structural steel brake beam channel and Truss flat at ends<br />
as shown in RDSO Drawing No WD-89033-S/1. Depending upon the<br />
extent of wear, worn out brake heads can either be built up by welding<br />
or worn out brake heads can be replaced by new brake head.<br />
601 C. REPAIR <strong>AND</strong> MAINTENANCE IN SICK LINE<br />
In order to obtain optimum life from the bogie, it is desirable to maintain the<br />
various clearances within recommended limits. Prescribed clearances are given in<br />
para 601 E.<br />
a. Due to wear of the mating components, increase in clearances should be<br />
monitored. Whenever the component reaches the condemning limits, repairs<br />
should be undertaken for either building up the wear on such surfaces or<br />
changing their liner, as the case may be.<br />
b. Due to the wear in bolster/side frame liners and wedge surface, the wedges<br />
shall move upwards. If the holes of bolster pocket wall and wedges starts<br />
crossing, repair shall be under taken. The gauge shall be used for determining<br />
the wear.<br />
c. The class of electrode, gauge of electrode, welding current and welding<br />
precautions to be taken while repairing the surfaces by welding.
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