| Subject: | Front Axle King Pin Maintenance and Lubrication Reminder |
| Models: | 2008 and Prior Chevrolet W-Series Medium Duty Tilt Cab Models |
| 2008 and Prior GMC W-Series Medium Duty Tilt Cab Models |
| 2008 and Prior Isuzu NPR/NPR-HD/NQR/NRR Commercial Models |
Chassis Lubrication is an important part of your vehicle's regularly scheduled maintenance. As part of this lubrication schedule, be sure to include the lubrication of the front axle king pins.
Regularly inspection and lubrication of this component is an important part in maintenance of the steering system of this vehicle. Be sure to use multi-purpose grease with high temperature, good quality, lithium soap, extreme pressure grease as recommended
in your owner's manual. Please consult the owner's manual for the specific vehicle and follow the appropriate service interval as indicated.
Apply grease at the king pin grease fittings (1) until excess grease can be seen coming out of the king pin joint. Wipe off excess grease. If the bottom king pin cap comes out while applying grease or is found missing, install or replace the king pin cap
as instructed by the Service Manual. Without this cap, lubricating grease can be lost or contaminated and cause king pin damage.
