A vent plug can wear or be damaged and cause ex-
cessive leakage, or allow water to enter the hub and
contaminate the oil. For examples of a leaking vent
plug, see
and
. Evidence of a leaking
vent plug may appear as;
•
Oil splatter around the wheel
•
Gooey/gummy oil around the vent plug purge
point
•
Hub/plug area is dirty, and water contaminated
oil in the hub.
•
Hub/plug area is clean, but there is water con-
taminated oil in the hub. (pressure washing is
the most likely cause)
06/07/2012
f330272
A
B
1
1
A
Upper View, LH Side
B
Lower View, LH Side
1.
Grease Fitting
Fig. 7, Kingpin Grease Fittings, Detroit Axles
09/13/2012
f330275
Fig. 8, Kingpin Grease Exit Points, Detroit Axles
06/12/2012
f330273
1
2
NOTE: No grease should emit from the tie-rod boot. If
grease emits from the tie-rod boot, the boot is dam-
aged.
1.
Grease Fitting
2.
Boot
Fig. 9, Tie Rod Grease Fitting and Boot, Detroit Axles
f330298
09/01/2016
Fig. 10, Normal Oil Venting
Front Axle
33
Columbia Maintenance Manual, July 2017
33/6
Summary of Contents for CL112 2015
Page 2: ......
Page 4: ......
Page 10: ......
Page 32: ......
Page 34: ......
Page 38: ......
Page 40: ......
Page 42: ......
Page 44: ......
Page 46: ......
Page 48: ......
Page 50: ......
Page 52: ......
Page 60: ......
Page 62: ......
Page 66: ......
Page 68: ......
Page 74: ......
Page 86: ......
Page 94: ......
Page 96: ......
Page 104: ......
Page 106: ......
Page 116: ......
Page 118: ......
Page 120: ......
Page 122: ......
Page 128: ......
Page 140: ......
Page 142: ......
Page 152: ......
Page 156: ......
Page 164: ......
Page 166: ......
Page 168: ......
Page 172: ......
Page 176: ......
Page 178: ......
Page 180: ......