Disassembly and Assembly

DISASSEMBLY AND REASSEMBLY

DISASSEMBLY SERVICE POINTS
[[A]] SELF-LOCKING NUT REMOVAL





CAUTION:
^ Do not tighten the special tool bolt too tight. The special tool will be broken if the allowable tightening torque of 74 Nm (55 ft. lbs.) is exceed.
^ Install the special tools evenly, and so that the maximum length will be attained within the installation range.
^ Do not use an impact wrench to tighten the bolt of special tool MB991237, otherwise the special tool will break.

1. Use special tools MB991237 and MB991238 to compress the coil spring.

WARNING: To prevent the piston rod self-locking nut inside the strut from loosening, do not use an impact wrench when the self-locking nut is loosened.





2. Use special tools MB991681 and MB991682 to secure the strut, and then remove the self-locking nut.

[[B]] STRUT ASSEMBLY REMOVAL

WARNING: Wear goggles when drilling to protect your eyes from flying metal debris.





The gas must be discharged from the strut assembly before discarding it. Place the assembly horizontally with its piston rod extended. Then drill a hole of approximately 3 mm (0.1 inch) in diameter at the location shown in the illustration and discharge the gas.

REASSEMBLY SERVICE POINT
]]A[[ SELF-LOCKING NUT INSTALLATION

CAUTION: Do not use an impact wrench to tighten the bolt of special tool MB991237, otherwise the special tool will break.

1. Ensure that the bearing is seated correctly.
2. install the special tool MB991237 to the strut assembly same as its removal.
3. While the coil spring is being compressed by the special tools, provisionally tighten the self-locking nut.





4. Align the hole in the strut assembly lower spring seat with the hole in the upper spring seat.

NOTE: Using a pipe as shown facilitates the alignment.

5. Correctly align both ends of the coil spring with the grooves in the spring seat, and then loosen the special tools.

CAUTION: Do not use an impact wrench to tighten the self-locking nut, otherwise the self-locking nut will not be tightened securely.





6. Using special tools MB991681 and MB991682, tighten the self-locking nut to 60 ± 10 Nm (45 ± 7 ft. lbs.).

INSPECTION
^ Check the bearing for wear or rust.
^ Check the rubber parts for damage or deterioration.
^ Check the spring for deformation, deterioration or damage.
^ Check the shock absorber for deformation.