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TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
WHEELS, RIMS, TIRES
Stud Corrosion
While this problem is not too common, it can occur and
make it difficult to obtain accurate' torque checks. When
corroded studs are encountered thorough wire brushing is
necessary. If corrosion is excessive, stud replacement is
recommended. If corrosion is persistent and a definite
problem is encountered with the cap nut freezing, the
lubrication of the first three threads of the stud with a graphite
base lubricant will solve this problem. Care must be taken to
assure that no lubricant gets in the ball seats of the stud holes
or in the ball faces of the cap nuts. Clean, dry cap nut faces
and nut seats at the wheels is necessary to maintain tight nuts
to specified torque. DO NOT OIL nut or stud threads except
as stated above.
Worn Stud Grooves
This is a result of improper initial assembly of the stud,
or from insufficiently tightened cap nuts. Either of these
conditions allow the shoulder of the stud to work in the groove
and eventually wear the groove until the stud will not hold,
Fig. 8.
Fig. 8
Use Of Correct Studs
When it is necessary to replace studs in a hub, it is
very important that the correct stud is used. Fig. 9 and 10
illustrate the correct stud application.
Fig. 9
Fig. 10
CAP NUTS
Worn Ball Faces
This is a result of operating on a loose wheel assembly,
Fig. 11.
CTS-2167N Page 5
PRINTED IN UNITED STATES OF AMER ICA
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