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102 Maintenance and Service
LUBRICATION
Chassis Lubrication
Before working on or servicing a vehicle, set the parking brakes, place the
transmission in neutral and chock the wheels. Failure to do so can result in
unexpected vehicle movement and can cause serious personal injury or
death.
General lubrication includes lubricating all the grease fittings in the drivetrain,
front and rear suspensions, power steering, and front axle, using a grease gun.
Grease the chassis every 24 000 km (15,000 miles). However, if the vehicle is
in a demanding application or running in a dirty or corrosive atmosphere,
adjust the lubrication intervals to reflect heavy-duty use. For example, if
driven in heavy stop-and-go traffic with a lot of maneuvering, the lubrication
intervals should be every 16 000 km (10,000 miles) or less. All lubricating
points are found on the chassis lubrication chart on the next page.
Lubricating Grease
Use grease with a lithium base with EP additives and a consistency of NLGI
No. 2. Care should be taken not to use any grease other than one with EP
additives for the driveshaft. DO NOT use any solid lubricants, such as
graphite, copper or molybdenum disulfide.
Lubrication Procedure
Make sure the grease fittings are cleaned off before greasing fill grease to the
point where old grease and contaminants are forced out from the part and only
new grease comes out. If new grease cannot be filled so old grease is flushed
out, the part needs to be checked for problems. If a fitting does not accept
lubrication due to damage or internal stoppage, replace it with a new fitting.
Think of greasing the same way as an oil change. All old grease should come
out and be replaced with new grease. Remove excess grease from fittings,
shackles and other surfaces.
USA22978.bk.book Page 102 Wednesday, July 9, 2008 9:09 AM