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HURSPK0026/00186
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8. Replace the coupling onto the shaft on top of the 12 bolt-hole coupler shim.
9. Evenly torque the bolts of the coupling to 25 foot pounds (33.9 Newton meters) (using
the cross torque method starting with the four bolts at the split of the coupling).
10. Manually operate the dome to the up position.
11. Loosen the bolts which holds the main bell air cylinder to the upper cross-member (see
Figure 1). This should be done with the dome in the "up" position. DO NOT
completely remove bolts from air cylinder base. The bolts should be loosened so that
there is at least a 0.5 inch (13 millimeter) gap between the nut and the upper cross-
member frame.
12. Take one 0.046" (1.1684mm) downlock shim (the thinnest shim in the kit) and one
0.056" (1.4224mm) downlock shim (the second to thinnest shim in the kit) and stack
them together. Make two sets of downlock shim stacks
13. Place one set of the downlock shim stacks on the right-hand side of the bed so that the
dome will sit on the shims instead of the bed when lowered. Place the second set of
shims on the left-hand side of the bed (See Figure 3).
14. The dome should then be manually operated to the "down" position so that it is resting on
the shims on the bed (this will give a 0.102" (2.5908mm) clearance between the bed and
the dome).
15. When the dome is in the down position, there should be a gap between the bottom of the
air cylinder and the upper cross-member - if a gap exists, the gap should be approximately
1/4" (6.35mm).
16. Make sure that all of the nuts and bolts from the main bell air cylinder and upper cross
member are loosened enough so that they are not holding the air cylinder down.
17. Measure the gap between the upper cross member and the main bell air cylinder on all
four corners of the air cylinder.
18. Determine which corner of the air cylinder has the largest gap between it and the upper
cross member.
19. With the dome in the “down” position, tag and lockout the power.
20. Locate the corner of the air cylinder, which has the largest gap between it and the upper
cross member. Remove this nut and bolt from the main bell air cylinder base where it is
connected to the upper cross-member (See Figure 4).
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