Tank Wrap Inspection

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Cracking or splitting of the fiber wrap around the circumference of the tank may occur during manufacture. This is normal. It does not affect tank strength and does not require repair.

A fiber epoxy matrix hoop wrap protects the CNG fuel tank. Inspect and resurface abrasions or cuts as follows:

Level 1 Abrasions

Level 1 abrasions are minor abrasions such as scuffs that are less than 0.010" (0.25 mm) deep.
It is not necessary to resurface Level 1 abrasions.

Level 2 Abrasions

NOTE: Replace tanks with abrasions that exceed Level 2 specifications.

Level 2 abrasions are abrasions with some exposed fibers or flat spots with a depth between 0.010-0.030" (0.25-0.76 mm).
Resurface Level 2 abrasions before returning the tank to service.

NOTE: Cut away frayed fibers before application of the epoxy coating.

Resin coat the abrasion with commercial room temperature cure 2-component epoxy resin Loctite(R) P/N 14600.

Level 1 Cuts

Level 1 cuts are cuts or scratches that are less than 0.020" (0.50 mm) deep.
Level 1 cuts may be any length.
Level 1 cuts may be in any direction.
It is not necessary to resurface Level 1 cuts.

Level 2 Cuts

NOTE: Repair Level 2 cuts before returning the tank to service.

Level 2 cuts are cuts or scratches that are up to 0.030" (0.76 mm) deep.
Level 2 cuts are up to 8.0" (203 mm) long.
Resurface Level 2 cuts before returning the tank to service.
Cut away frayed fibers before applying the epoxy coating. Resin coat the cut with commercial room temperature cure 2-component epoxy resin Loctite(R) P/N 14600.