D
Group 177 Design and Function
Brakes
Brake Cams and Slack Adjusters
For further information concerning component
specifications see service information in Group 1, “Oil and
Filter Change Intervals for Volvo Components,” publication
number 175-60, “Approved Oils Lists, Volvo Components”,
Publication Number 175–61, and appropriate vendor
literature.
For further information concerning brake cams see
service information in Group 5, “Q Plus LX500 and MX500
Cam Brakes Literature,” publication number 514–003, 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.
W5000615
Air Dryers
Air dryers have internal maintenance systems that clean
out the accumulated moisture frequently and can therefore
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 application.
Dryer manufacturers recommend changing cartridge
every 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.
Note: If a vehicle is operated in a severe weather
environment, It is recommended to change the air dryer
cartridge prior to the severe weather season.
W5001194
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