C-5. LUBRICANTS (Cont.)
For operation of equipment in extended cold temperatures below -15F (-26C), remove lubricants
prescribed in the key for temperatures above -15F (-26C). Re-lubricate with lubricants specified in
the key for temperatures below -15F (-26C). If OEA lubricant is required to meet the temperature
changes prescribed in the key, OEA lubricant is to be used in place of OE/HDO lubricant for all
temperature ranges where OE/HDO lubricant is specified in the key.
When the wheels and hubs are removed, place a light film of lubricant on cam roller follower
shafts, journals, and the top and bottom surface of the "S" cam. Wipe off any excess lubricant.
Automatic slack adjusters:
Do not use any grease with Teflon, over 3% molysulfide content, or
"white" grease in the automatic slack adjusters. These additives
will adversely affect the friction clutch and cause it not to hold the
adjustment, resulting in premature failure, injury to personnel and
damage to the equipment.
It is important not to overfill wheel-end cavity with lubricant. Do not
exceed grease level indicated below. Also, make sure excess
grease is wiped away since it can contaminate brake linings and
cause poor brake performance.
Pack bearing cones with grease by forcing grease into the cavities between rollers and
cage from the large end of the cone. The use of a pressure packer is recommended;
otherwise pack the bearings by hand.
Apply a light coat of grease to the spindle bearing journals and wipe off excess.
Fill the hub cavity with grease to the outer cap's smallest diameter.
At the top of the spindle and as far back as possible, pump additional grease until it
appears that the grease will run out. Install the outer bearing cone quickly.
Hub cavity will be filled approximately 1/3 full of grease (from the 4 to the 8 o'clock
positions). This will involve installation of approximately 1-1/2 lb (0.7 kg) of grease.
Install the wheel retention hardware. Place a dab of grease across the face of the
locknut for identification that hub cavity has been greased if caps are not to be
Brush a thin layer of GAA on the inside of the hub cap. Do not cover
vent with grease. Do not pack the hub cap with grease. Do not coat
the cap mounting flange with grease. Coating the cap vent will
result in seepage of lubricant and may clog the vent.