National Crane 1-21-2019 Control # 104-07 9-1
1400A SERVICE MANUAL CRANE INSTALLATION
SECTION 9
CRANE INSTALLATION
SECTION CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Minimum Truck Requirements . . . . . . . . . . . . . . . 9-1
Jib protection Schematic . . . . . . . . . . . . . . . . . . . . 9-1
Mounting Configuration . . . . . . . . . . . . . . . . . . . . . 9-4
PTO Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Horsepower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Direct PTO Mount . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
PTO Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Pump Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Truck Frame Strength . . . . . . . . . . . . . . . . . . . . . . 9-6
Truck Preparation . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Welding Precautions . . . . . . . . . . . . . . . . . . . . . . 9-10
Positioning the Crane On the Truck . . . . . . . . . . 9-10
Reinforcing after Frame Extension . . . . . . . . . . . 9-11
Mounting the Crane. . . . . . . . . . . . . . . . . . . . . . . . 9-15
Truck Interface Electrical Connection . . . . . . . . . 9-18
Hydraulic System Connection . . . . . . . . . . . . . . . 9-19
RCL Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19
Initial Crane Run in Procedure . . . . . . . . . . . . . . . 9-19
Stability Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19
Specifications 1400A. . . . . . . . . . . . . . . . . . . . . . . 9-21
Hydraulic System. . . . . . . . . . . . . . . . . . . . . . . . . 9-21
Hoist System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22
Crane Operating Speeds . . . . . . . . . . . . . . . . . . . 9-22
Air Conditioner (Optional) . . . . . . . . . . . . . . . . . . 9-22
Dimensional Drawing . . . . . . . . . . . . . . . . . . . . . . 9-23
GENERAL
This section provides information for proper mounting and
initial check out of the crane. Improper mounting can result in
damage to the truck frame and drive train, the hydraulic
pump, and cause crane instability. The Federal Department
of Transportation Laws relating to vehicle manufacture and
modification such as lights, brakes, and axle loads must be
met as well as State vehicle laws relating to weights and
dimensional restrictions such as overall length, overhang,
etc.
The final manufacturer of the vehicle must certify that the
axle ratings have not been exceeded with all permanently
attached equipment including a full load of fuel and men [at
90 kg (200 lb) each].
National Cranes must meet ASME/ANSI B30.5 (latest) when
completed as cranes and ASME/ANSI B30.23 (latest) when
completed as a personnel lifting system. These standards
require welds to meet AWS D14.3 or AWS D1.1 respectively.
Any work done in mounting must be done in compliance with
these codes.
NOTE: Verify that the number on the serial number plates
on the major components match the main serial
number located on the crane frame. If the serial
numbers do not match, contact the factory before
proceeding. Matching serial numbers insure that
accurate information is recorded at the factory.
MINIMUM TRUCK REQUIREMENTS
The minimum truck requirements for mounting the 1400A
series cranes are as follows:
• Axle Rating — Axle ratings are determined by the
axles, tires, rims, springs, brakes, steering and frame
strength of the truck. If any one of these components is
below the required rating, the gross axle rating is
reduced to its weakest component value.
• Wheelbase (WB), Cab-to-Trunnion (CT) and Cab-to-
Axle (CA) — The WB, CT and CA requirements are
determined by:
- Mounting Configuration
- Boom Length
- Bed Length
The WB and CT shown in Figure 9-2 are required so the
basic 1400A can be legally driven in all states and meet
stability requirements. The dimensions given assume
the sub-base is installed properly behind the truck cab. If
exhaust stacks, transmission protrusions, etc. do not
allow a close installation to the cab, the WB and CT
dimensions must be increased. Refer to Mounting
Configuration on page “Mounting Configuration” on
page 9-4 for additional information.
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