TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 116 of 801

TM 9-2320-273-34

b.

Remove any existing rough metal or weld spots on fuel tank surface, using a sander with a coarse

grit aluminum oxide disk.

c.

Smooth all sanded surfaces with fine grit aluminum oxide disk.

NOTE

Be sure surface to be welded is free from

oil, grease, moisture and any heavy oxide

coatings.

d.

Oil or grease can be removed by wiping affected area with drycleaning solvent.

e.

Heavy oxides can be removed with wire brush or emery cloth.

3-8. Installation.

WARNING

Eye protection must be worn by all per-

sonnel while welding is being performed.

NOTE

Use MIG weld with 5356 welding wire

for all welding on the fuel tank step.

Inspect the new top step seams for gaps.

If the gaps are excessive, attach a suit-

able clamp on outside ends of step, draw

both ends into front of step and tack

weld together.

a.

Mark location of new top step using scribe or marking pencil.

b.

Using an assistant place new top step in marked position on fuel tank. Weld front of step to sur-

face, with approximately 1/2 in. (12.7 mm) fillet weld seam. Finish welding back of step and both ends to

the fuel tank (fig. 3-3).

c.

Wire brush all welded areas. Remove any carbon or weld splatter.

d.

Inspect welded areas on step and fuel tank for good contour, continuity, cracks or an y other

welding defects.

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