Harrington Hoists and Cranes HPC 500 End Truck - Manual (Page 15)

15
WHEEL
ASSEMBLY
FLAT WASHER
(HPC 505 ONLY)
FRAME*
FLAT WASHER
LOCK
WASHER
HEX NUT
*NOTE: DROP
STOP NOT
SHOWN FOR
CLARITY.
Figure 3-6 Wheel Assembly Installation
Underhung
Top Running
Figure 3-7 Wheel Mounting Locations
3.3.5 Verify “H” Dimension – The “H” dimension is the End Truck Frame Spacing (see Table 2-1 and Figure
2-
1). By verifying the “H” dimension you verify that the end bracket holes are correct for proper fit of the
end truck onto the runway. Proceed as follows:
 Calculate the “H” dimension for your application. For S Beams and ASCE Rail H = T + 1¼
(inches). For W Beams and Square Bar H = T + 1½ (inches). Note: T is the measurement from
step 3.3.3 above.
 Refer to Figure 2-3 and Figure 3-9 and assemble the frames and end brackets together. As you
tighten the fasteners (don’t fully tighten yet – this comes later) measure the actual “H” dimension in
accordance with Figure 3-
8. Verify that the measured “H” dimension and the calculated “H”
dimension are the same.
 Match mark the end brackets to the frames to ensure the “H” dimension is held for the following
steps.