BOGIES AND SUSPENSION - South Central Railway

CHAPTER 6 – BOGIES AND SUSPENSION
WAGON MAINTENANCE MANUAL
Page 48 of 121
At the time of POH, if the holes are found to exceed 2 mm in
dia above the nominal dia, it should be built up by welding and holes
should be drilled to correct size. Normally no wear takes place on these
holes. At the time of POH and in service, the bottom arch bar should
be checked for cracks breakage and loss in off - set. If these defects are
found, it should be renewed/ repaired. There are hardly any case of
cracking or breakage of bottom arch bar.
VII. BOGIE SPRING PLANK PACKING
Four numbers are required for each trolley. It is placed between
the vertical side of the spring plank and column and these are secured
together by rivets. Each packing plate has two rivet holes. The rivet
holes should be drilled at correct locations. Packing plates are provided
only if necessary on diamond frame bogies. It gives enough space for
inserting and withdrawing the floating bolsters to and from the side
frame.
e. AXLE BOX WITH SIDE FRAME
This is identical to Cast Steel Bogie axle box and side frame
covered earlier in this chapter.
604 B. REPAIR AND MAINTENANCE IN SICK LINE
i. The tie bar should be checked for crack/breakage. Cracked tie bars should be
changed.
ii. The column should be checked for cracks distortion etc. and necessary
replacement/repairs should be done.
iii. The rivets should also be checked for cracks/breakage and slackness and
renewed.
iv. The brake beam hanger bracket bushes should be checked for wear and be
replaced if necessary.
v. Repair of Top & bottom arch bar to be done as given in para 604 A (a) V, VI..
604 C. REPAIR AND MAINTENANCE DURING ROH & POH
In addition to all the work mentioned above in para 604 B, the following work
is also to be carried out in ROH & POH :-
a. The column should be checked for cracks, distortion etc. and
replacement/repairs should be done. The four rivets should be checked for
cracks/breakage and slackness and renewed.