Manitowoc National Crane NBT40 Series, Руководство по обслуживанию

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9
National Crane
Published 8-01-2017 Control # 287-11
9-23
NBT40 SERVICE MANUAL CRANE INSTALLATION
MOUNTING THE CRANE
Make sure the truck has been configured to meet the
minimum truck, PTO, and frame strength requirements as
described previously in this section. Mounting the crane to
the truck frame is as follows:
NOTE: All welds used to secure the crane to the truck
frame must be grade 70 or better.
1. Place the crane assembly on the truck frame as
determined by the information contained in the section
titled Positioning the Crane On the Truck on page 9-18.
2. Locate and weld four upper mounting plates (1,
Figure 9-15) on the T-box frame (7) per detail A and B,
Figure 9-15.
3. Secure two anchor bars (2, Figure 9-13) to each left and
right side upper mounting plates (1), view A.
Secure one anchor bar (2, Figure 9-13) to each left and
right center upper mounting plates (1a), view B.
4. Bolt four lower mounting plates (3, Figure 9-15) to
anchor bars (2) finger tight.
5. Align and position each lower mounting plate (3,
Figure 9-15) directly below the upper mounting plates
(1).
Drill four 5/8 holes through the truck frame. Use existing
holes (4, Figure 9-15) in the lower mounting plate (3) to
locate holes in the truck frame (6).
6. Locate and weld the rear strap plate (5, Figure 9-16) and
collar plate (8) to the T-box frame (7). See detail C,
Figure 9-16 for locator dimensions and weld
requirements.
Position rear strap plate (5) with the bend in the plate
inward or outward depending on the width of the truck
frame.
7. Cut the cross bar (10, Figure 9-16) to fit inside the truck
frame (6), be sure to include the width of two plates (11).
8. Weld the two end plates (11, Figure 9-16) to the cross
bar (10).
9. Position the welded cross bar assembly (step 8) to the
truck frame as shown in Figure 9-16, in the center of
both strap plates (5) and tack weld it to the truck frame
(6).
10. Use existing bolt holes (9, Figure 9-16) in the rear strap
plate (5) as a template to locate and drill four 5/8 in.
holes in the tuck frame (6) and through the cross bar
weldment plate (11).
11. Weld complete the cross bar weldment (10, 11
Figure 9-16) to the truck frame (6)
12. Install and secure, four 5/8 x 2.75 bolts (9, Figure 9-16),
flatwashers and nuts.
DANGER
It is mandatory that swing bearing and T-box attaching
bolts be inspected and re-torqued after the first 300 hours
of crane operation and every 500 hours thereafter. The
bolts may loosen and cause the crane to separate from
the carrier which will result in damage to the crane and
possible injury or death to personnel.
!
Reference Only