Specifications

hoses or the bottom of the radiator. You can drill right through, just like you can drill through
your own hand if you point it incorrectly. Don't forget to clean the rear axle housing too.
Proper lube of ball joints means lifting the motorhome by a frame member so the suspension
hangs free and then lube the zerks. Don't forget to wipe the zerks clean before you lube.
Otherwise, you will be pushing gritty dirt into the joint. If the motorhome is lifted for
lubrication by driving up on wheel ramps, the ball joints are under enough tension to inhibit full
flow around the entire ball socket. Also, when lifted like this, it is a good time to check ball joint
wear.
To do this you will need a caliper that will measure the lower ball joint distance between the tip
of the ball stud and tip of the grease fitting below the ball joint while the suspension hangs free.
Then, change the point you are lifting the front end so that you are supporting the weight of the
control arms at each wheel or each lower control arm. Again measure between the same points
on each lower ball joint. The difference between the two measurements for each should not
exceed 3/32 of an inch. Remember, even new ball joints have play in them. If they didn't, they
wouldn't move. If you replace, replace in pairs.
http://users.sisna.com/cebula/P-Chassis-AlignmentProcess.pdf 6 Version 0.7 –Sep 14, 2005