4 Repair
4.4.2. Replacement of complete lower arm
1233HAC023637-001 Revision: B
Refitting, lower arm
The procedure below details how to refit the complete lower arm.
Action Note/Illustration
1. Clean the mating surfaces on both the lower arm and
on the frame with isopropanol. Also clean the area
where the sealing ring is fitted.
2. Fit the sealing ring properly to the frame. Replace it if
damaged.
Spare part no. is specified in
Required equipment on page
121.
xx0400001245
• A: Sealing ring
• B: Mating surface
3. Lubricate the mating surface on the frame with
Loctite 574.
4.
CAUTION!
The lower arm weighs 20 kg! Use a suitable lifting
device to avoid injury to personnel!
5. Fit the lifting device to the lower arm and lift it into
position.
6. Insert the cabling into the lower arm.
7. Fit the lower arm against the frame, fit the washer
and secure with the 12 attachment screws.
12 pcs; M10 x 40, tightening
torque: 70 Nm.
8. Push the cabling up through the lower arm and place
the cable bracket inside the lower arm correctly.
9. Fit new VK-covers to the lower arm.
Make sure that the cable bracket inside the lower arm
is secured beneath the middle VK-cover.
Spare part no. is specified in
Required equipment on page
121.
10. Refit the upper arm. Detailed in section Refitting,
complete upper arm on page
119.
Continued
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