Peterbilt Medium Duty Trucks Operator's Manual after 1-07

Front Axle and Suspension
• Thoroughly clean hubs and bearings with solvent and a
stiff bristle brush, then dry and inspect components for
wear or damage. Re-lubricate with approved axle lubricant.
Preventive Maintenance
KINGPIN (TOP)
Kingpin Lubrication
• Lubricate with approved lubricant. Lubricate knuckle
thrust bearings, knuckle pins, and tie rod ends. See
Table 2, “Recommended Maintenance Intervals,” Page
120. Lack of lubrication causes premature wear and
hard steering. Lubrication schedule may be shortened if
necessary.
Suspension Lubrication
Each spring anchor pin has a grease fitting. Pressure lubricate
spring pins according to Table 2, “Recommended Maintenance
Intervals,” Page 120, using EP chassis lube with 12-
Hydroxy Lithium Stearate Base NLGI-2 with 3% molybdenum
additive (e.g. Mobil-grease EP or equal).
Front Axle
KINGPIN
(BOTTOM)
00445
• At regular intervals, the spring leaves may be lubricated
with a rust-inhibiting oil applied with a spray gun or
brush.
• Lubricate all spring pins until grease flows out of both
ends of the bushing. Look for signs of rust or water in the
flushed grease. If a pin will not accept grease, it should
be removed, cleaned, and inspected.
– 210 – Y53-6008 Medium Duty (R10/06)