General information on air-spring strut
The air-spring struts are pre-filled to approx. 3 bar overpressure ex-works. If a new air-spring strut is installed, air can diffuse (escape) from the bellows of the air-spring strut as a result of storage times of varying duration. If the air-spring strut is removed from the transport packaging and installed without being filled, the bellows can fall into folds, thereby damaging the air-spring strut. For this reason, all air-spring struts must be re-filled prior to use! The procedure is described in detail in the course of the repair instructions.
Overview of rear air-spring strut
Note. The components of the air spring -7- (figure shows component arrangement of rear air-spring strut), Items -2; 3; 4; 5- (figure shows rear air-spring strut), cannot be disassembled. see scheme 20, see scheme 19. Always replace the complete air spring -7- (figure shows component arrangement of rear air-spring strut)! see scheme 20
Scheme 1
1 - Sealing ring
2 - Lid
3 - Outer guide
4 - Rolling boot
5 - Rolling piston
6 - Bellows
7 - Shock absorber
8 - Sealing ring
Scheme 2
1 - Hexagon-head bolt
2 - Mounting saddle
3 - Hexagon nut
4 - Spring-strut mount
5 - Sealing ring
6 - Residual pressure retaining valve
7 - Air spring
8 - Rubber stop
9 - Hexagon nut
10 - Protective cap
11 - Shock absorber
12 - Sealing ring
13 - Boot/bellows
14 - Clamp
Overview of front air-spring strut
Note. The components of the air spring -7- (figure shows component arrangement of front air-spring strut), Items -2, 3, 4, 5- (figure shows front air-spring strut), cannot be disassembled. see scheme 36, see scheme 35. Always replace the complete air spring -7- (figure shows component arrangement of front air-spring strut)! see scheme 36
Scheme 3
1 - Sealing ring
2 - Lid
3 - Outer guide
4 - Rolling boot
5 - Rolling piston
6 - Bellows
7 - Shock absorber
8 - Sealing ring
Scheme 4
1 - Hexagon-head bolt
2 - Mounting saddle
3 - Hexagon nut
4 - Spring-strut mount
5 - Sealing ring
6 - Residual pressure retaining valve
7 - Air spring
8 - Rubber stop
9 - Shock absorber
10 - Sealing ring
11 - Boot/bellows
12 - Clamp