Service manual

Group 177 Design and Function
Brakes
Brake Cams and Slack Adjusters
For further information concerning component specifica-
tions see service information in Group 1, “Oil and Filter
Change Intervals for Volvo Components,” publication
number 175–001, and appropriate vendor literature.
Lubricate the brake cam bushings using a lithium based
grease with EP additives and consistency NLGI No. 2.
Fill grease until old grease has been pushed out past
the seal and new grease can be seen flowing.
Lubricate the slack adjusters using a lithium based
grease with EP additives and consistency NLGI No. 2.
Fill grease until old grease has been pushed out past
the splined shaft area, and adjustment pawl and new
grease can be seen flowing.
Air Dryers
Air dryers have internal maintenance systems that clean
out the accumulated moisture frequently and can there-
fore work with long maintenance intervals. Eventually the
drying medium will be filled up and the cartridge will
need to be changed. Change cartridge when there is
more water being drained in the daily emptying of the
tank than usual. This is a progressive development and
the time interval will be different from application to ap-
plication.
Dryer manufacturers recommend changing cartridge ev-
ery 2 to 3 years but intervals need to be adjusted for
application. The only dryer with regular maintenance is
the Midland, where the coalescent filter needs changing
every year.
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