METHOD FOR ADJUSTING SHIMS AT TRUNNION
• Correct value for play at ball joint: 0.2 to 1.2 mm (0.008 to 0.047 in)
• Standard shim thickness: 10 mm (0.394 in)
Adjust the play in the ball joint to the correct value, according to the following procedure.
1.
Remove bolts (1), and remove cap (2).
2.
Wipe off the grease and dirt from the sliding surface of ball
(3).
3.
Remove all shims (4).
4.
Install cap (2) and tighten bolts (1) lightly.
Tightening torque: 39.2 to 49 Nm {4 to 5 kgm, 28.9 to
36.2 lbft}
5.
Measure clearance at portion A (top) and portion B (bot-
tom) of ball joint, and calculate average clearance C[C =
(A+B)/2].
6.
Set so that the shim thickness is between (C + 0.2) to (C +
1.2) mm ((C + 0.008) to (C + 0.047) in).
The shim thickness can be set in units of 1 mm (0.039 in).
7.
Remove bolts (1), and remove cap (2).
8.
Install shims of the thickness set in step 6 to the top and
bottom.
9.
Tighten cap (2) with bolts (1).
Tighten bolts (1) in turn at the top and bottom to reach the
specified torque.
Tightening torque
( Nm{ kgm, lbft})
Specifications of work equipment
785 to 980
{80 to 100, 578.6 to 723.3}
Straight tilt dozer
Straight tilt power pitch dozer
Sigma dozer
Sigma power pitch dozer
Angle dozer
1150 to 1440
{118 to 147, 853.5 to
1063.3}
Power angle power tilt dozer
10.
Operate the work equipment and check that there is no abnormal noise or abnormal play.
MAINTENANCE PROCEDURE MAINTENANCE
4-50
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