Ver. 2011-10
www.metsjo.se
29
21
BPW air suspension assembly
BPW air suspension assembly with axle lift device
English
Maintenance works
Summary
Detailed description on pages 22 � 25
Maintenance works
Maintenance works
�
Visual check
Check all components for damage and wear.
1
Check the condition of the air bags.
2
Check the condition of the air suspension valves,
ensure that they are not leaking and are firmly seated.
3
Check that the spring mountings are firmly attached.
Torque settings with a torque wrench:
M 24
M =
650 Nm
(605 � 715 Nm)
4
Check that the spring bolts are tight.
Torque settings with a torque wrench:
Air suspension hanger bracket:
M 30
M =
900 Nm
(840 � 990 Nm)
Channel crossmember:
M 30
M =
900 Nm
(840 � 990 Nm)
5
Check that shock absorber mountings are firmly attached
and undamaged. Torque settings with a torque wrench:
M 24
M =
420 Nm
(390 � 460 Nm)
6
Check that the air bags are firmly attached.
Torque settings with a torque wrench:
M 12
M =
66 Nm
(62 � 73 Nm)
M 16
M =
230 Nm
(214 � 253 Nm)
7
Check axle lift device for wear and firm attachment.
M 16
M =
230 Nm
(214 � 253 Nm)
1)
more frequently under heavy usage
20
BPW air suspension systems
after the first laden
jour
ney
every 200 hours in
operation
every 500 hours in
operation at least
once a year
1)
