ARMY TM 5-5420-212-10-1
MARINE CORPS TM 08676A-10/1-1
The preventive maintenance checks and services for a bridge used in engineer training with frequent
assembly, trafficking an disassembly, are shown in Table 2-2. The components must be disassembled from the bridge
and removed from pallets.
TABLE 2-2. Preventive Maintenance Checks and Services Monthly Schedule (visual)
- Bridge Disassembled.
If any component shows obvious signs damage refer to Unit PMCS in TM 5-5420-212-23.
ITEM TO BE
These inspections should look for evidence of the following:
a. Damage to the protective paint and zinc coatings.
b. Impact damage
c. Signs of corrosion
d. Resilient mounts are intact
e. Correct operation of all shot bolts
f. Check all welds for cracks especially indicator jaw No. 6.
g. Security of carrying bar brackets
h. Security of sway brace brackets
i. All rollers free and not seized
j. Damage to guide slots, dowels and pin holes
k. Security of captive pins
I. Cracking around jacking points
m.Carrying tools intact and safe to use
n. Equipment not ready/available if items above do not pass inspection
Section II. OPERATION UNDER USUAL CONDITIONS
An MGB mission is a multi-activity operation broken down into the following phases. Most o the activity is
concurrent. For example during the assembly a double story bridge, after lowering the are bank end of bridge, the far
bank crew are able to remove the launching nose while the near bank crew are lowering the near bank end of bridge. The
purpose of this manual is to detail these procedures, therefore, to avoid confusion, concurrent activity is not addressed.
The NCOIC will determine who performs these procedures and at what time.
The bridging operation will begin with preliminary planning with includes preliminary studies, se selection,
reconnaissance, design, estimation of manpower and times. This is covered in Chapter 3. Then follows the six phases of
the operation. Phases a, b, e and f (below) are covered in Chapter 3 and phases c and d in Chapter 4, 5, 6 and 7.