Traction Rolling Stock - Indian Railways Institute of Electrical ...

No. inspected inspection
01. Clearance of spring plank from rail level IC, AOH, IOH, POH
02. Buffer Height IA, IB, IC, AOH,
03. Coupler height 1105 mm(max) - 1030 mm(min) - do -
POH
04. Clearance between bogie frame and axle IB, IC, AOH, IOH,
05. Clearance between top of axle box and bogie frame - do -
06. Clearance between bottom of axle box and horn stay. - do -
07. Clearance between bolster and bogie frame - do -
POH
08. Clearance between bogie and stops and under frame IB, IC, AOH, IOH,
09. Clearance between bogie horn cheek and
axle box horn face.
-do-
10. Clearance between traction pads on bolster -doand
bogie frame.
11. Clearance between axle collar and bearing -dobrass
(end float)
12. Clearance between axle box flange and horn leg. -do-
13. Clearance between side stops. -do-
14. Clearance between stops on bogie and under frame -do-
8.14 SQUARING OF BOGIES
Due to heavy mechanical stresses and impacts suffered by bogies in service, some of
them get out of shape and distorted. During IOH and POH it is essential to restore bogies to their
correct shape and alignment. To check this, at every major shed and POH shop, a test rig with a
substantial foundation is provided over which the bogie can be placed and the amount of
distortion, which has taken place, can be measured. By application of adequate pressure at
appropriate points either hydraulically or by other means, frame distortions are corrected as
required, so as to ensure proper mechanical alignment of all parts assembled over the bogie.
8.15 ENGINE FITNESS CERTIFICATE
8.15.1 Whenever a loco for passenger service is released from a loco shed or outstation depot
after scheduled inspection or unscheduled repairs an Engine Fitness Certificate should be
issued.
8.15.2 The certificate will be in two parts:-
Part A :
Part B :
Items to be checked by maintenance staff only.
Items to be checked by maintenance staff and driver jointly.