BUCKET LINKAGE SHEARS
Page 6 Section 7
Main Pivot Installation
UPPER JAW PREPARATION
continued
12.
Fully install the left-hand side main bearing.
13.
Wedge the upper over tight against the thrust
washer.
14.
Mic the shaft stick out on the right-hand side.
Record Dimension A. (Figure 7-8.)
15.
Mic the right-hand endcap depth, B. Record
Dimension B.
16.
Install the right-hand endcap with shims onto the
main shaft.
17.
Check to see how the upper moves from its own
weight. Using the crane, slowly lower the upper.
When the tip is about to go into the lower, the upper
should have a slight “drag.” If you need to slightly help
the upper move, that is about right. (Figure 7-9).
18.
If the upper moves easily, remove .005" shims
from the right-hand side and repeat step 20.
19.
When the proper amount of movement is
reached, torque all right-hand endcap bolts. Use
Permatex removable thread locker (#24225). Torque =
400 ft-lbs. (Figure 7-10.)
20.
Repeat steps 15 -22 for the left-hand side.
All bolts with correct torque applied should be
identified by a white grease pen slash mark across the
bolt head.
FIGURE 7-8
A
B
FIGURE 7-9
FIGURE 7-10
NOTICE
