Chapter 5. HIGHWAY TRANSPORTABILITY GUIDANCE

TM 55-3805-261-14

CHAPTER 5

HIGHWAY TRANSPORTABILITY GUIDANCE

Section I. GENERAL

such movements are governed by theater regulations.

5-1. Scope

This chapter provides highway transportability guidance

CAUTION

for movement of the model 130G-series graders. It

covers technical and physical characteristics, as well as

Vehicles must not exceed 3 miles per

safety considerations, and prescribes the materials and

hour during loading or unloading.

guidance required to prepare, load, tie down, and unload

the vehicle.

5-3. General

The model 130G grader can move throughout the

5-2. Safety

United States without size and weight limitations. The

In addition to the safety precautions in chapter 3,

grader's maximum speed is 24.5 miles per hour. This

movement is subject to all safety laws, rules, and

limits the distance for deployment and will prevent

regulations applicable to commercial carriers. Overseas

movement on some highways.

Section II. TRANSPORT BY SEMITRAILER

legal limits for CONUS. Table 5-1 shows the transport

5-4. Transport of the Model 130G Grader by

characteristics of the model 130G grader.

Semitrailer

The model 130G grader can be transported over the

b. Bridge Limitations. Most States allow tandem

highways on the M870 semitrailer.

The M870

axle loads up to 50,000 pounds on bridges. Based on

semitrailer is moved by the M916 and M920 tractors.

the Bridge Gross Weight Formula of the Federal

This tractor-trailer combination is normally not in the

Highway Administration, the heaviest allowable tandem

same unit is the grader.

axle load for the model 130G Type II Grader is 42,250

5-5. Preparation of the Model 130G Grader for

pounds. The 36,825-pound tandem axle load is well

Highway Transport

within this limit and should present little trouble in

obtaining permits for axle loads when required for

a. Reduce height of the graders by removing the

highway movement.

ROPS from the Types I and II graders and the cab from

the MIL grader; also the air cleaner, muffler, and

c. Loaded Characteristics. The model 130G Types

exhaust pipe from all.

I and II graders are slightly larger than the model 130G

MIL grader. The model 1.30G grader loaded on the

M870 semitrailer is described in figures 5-1 and 5-2.

NOTE

ROPS will have to be transported by

d. Materials. The bill of materials for blocking and

a separate vehicle because of a lack

tiedown of the model 130G grader on the M870 semi-

of space on the M870 trailer.

trailer is depicted in table 5-2.

e. Loading.

b. Ensure all items are stowed, and secure with

(1) The model 130G grader may be driven to

nylon cord or a suitable substitute.

the tiedown position on the M870 semitrailer, or it can

be winched on.

c. Weigh vehicle to verify total weight, front and

(2) The blade and scarifier should be in the

rear axles weights.

full up position during loading. Before the blade is

lowered, it should be turned so it fits within the width of

5-6. Transport of the Model 130G Grader by the

the grader. Parking shoring should be placed under the

M870 Semitrailer Towed by the M920 Truck Tractor

blade to protect the semitrailer bed.

a. General. The combined length of the tractor

(3) After the grader is placed at the tiedown

position, the transmission must be placed in the neutral

and semitrailer (61.25 feet) exceeds the generally

position and brakes set, if appropriate. Doors should be

accepted CONUS and overseas unrestricted length of

wired shut to preclude opening en route.

55 feet. The width and height of the model 130G

grader/semitrailer in the reduced configuration are within

5-1