Workshop Manual

FRONT ATTACHMENT / Front Attachment
W4-1-8
IMPORTANT: When the arm has been removed
from the boom, perform the
followings when installing the arm.
15. Install shim (14) to the left and right sides of arm.
Shim (14) thickness: 8.0 mm
16. Insert the shim between the arm and shim (14) so
that the clearance between shim and arm is
within 1.5 mm.
Shim thickness: 1.0 mm or 2.0 mm
17. After installing the arm, apply grease into the
boom/arm joint pin and the rod side of arm
cylinder by using a grease gun.
As for the machine attached with the auto
lubrication device (Optional), turn the auto
lubrication switch ON
IMPORTANT: For handling of HN bushing for the
front attachment, check the
followings.
• Precautions when installing the bushing
When installing the bushing and if a hammer is
used, the bushing may be damaged. Install the
bushing by using a press.
• Precautions when reinforcing the arm
The heat when welding in order to reinforce the
arm may cause oil leakage and decrease
lubrication performance.
When lubrication oil leaks, replace the bushing.
W166-04-01-100
W166-04-01-101
14
A
rm Cylinder
Rod Side
Boom / Arm
Joint Pin
Boom / Arm
Joint Pin
Boom
A
rm