BOGIES AND SUSPENSION - South Central Railway

CHAPTER 6 – BOGIES AND SUSPENSION
a) Preparation of FRLP Dry Pads
WAGON MAINTENANCE MANUAL
Page 100 of 121
I. Insert FRLPs into a tank filled with axle oil to specification IS:1628
medium grade and ensure that they are fully submerged.
II. Periodically squeeze the pads to ensure proper absorption of oil.
III. Saturate the pads for 12 hours.
IV. On removal from the tank the saturated pads may be immediately
applied to axle boxes, or placed on suitable rake/wire netting for
draining of excess oil for a period not exceeding one hour prior to
application to axle boxes or packaging in leak proof bag.
V. Pads that drain for more than one hour must be return for resaturation.
VI. Minimum amount of oil that must be retained by lubricator after 12
hours saturation and one hour draining should be
(i) MG Pads 1200 grams
(ii) BG Pads 1800 grams
The pads should occasionally be weighted for cross checking.
VII. Oil saturated FRLPs that are to be stored or sent to other fitment points
must be packed in individual leak proof polythene bags and contains a
minimum of 5% more oil by weight than that specified under para
“VI” above.
VIII. Both dry and saturated pads should be kept in dry and clean place to
avoid ingress of dust and other foreign material.
b) Preparation of FRLP Pre Lubricated Pads
I. These FRLPs are mechanically saturated with oil at the manufacturers
end.
II. Pre oiled pads shall be supplied by the manufacturers packed in
individual polythene leak proof bags and securely sealed.
III. These pads shall be packed by the manufacturer in corrugated or other
suitable container lined with polythene or plastic material of sufficient
thickness to prevent leakages.The container used shall be sufficient
strength to avoid damage or permanent distoration of the package pads.
Each container shall contain a set of 4 FRLPs. The container shall be
suitable sealed to prevent contamination.
IV. These container should be properly stacked/stored in
sickline/workshop to avoid any damage.
c) Preparation of Journal Boxes and Associated Parts
I. Before applying the pads to axle box remove journal bearing and
wedge
II. Thoroughly clean the axlebox. Lintfree wiping rags must be used for
cleaning purposes.
III. Waste or paper should never be used for cleaning purpose.