John Deere Gas Tank Repair

This week, a local customer brought in a gas tank for a John Deere Z915B zero turn mower. We were able to save the customer hundreds of dollars by repairing the tank for him.

This tank has a long plastic ID symbol. The ID symbol reads >PE-HD EVOH PE-LLD<. PE-HD means high density polyethylene, EVOH means ethylene vinyl alcohol, and PE-LLD means linear low density polyethylene. In this case, EVOH is used as a hydrocarbon barrier. For the repair, we used our 5213 Agricultural Plastic Welding Kit and PR-04 low density polyethylene welding rod.

A black gas tank for a John Deere zero turn mower.

A close view of the damage

The tank has been damaged and a piece of it is pulling away.

The identification symbol for this plastic part is >PE-HD EVOH PE-LLD<.

The identification symbol >PE-HD EVOH PE-LLD< means that this tank is made of high density polyethylene, ethylene vinyl alcohol, and linear low density polyethylene.

When pulling back the damaged piece, you can see the tank has a black layer and a white layer

You can see the different colors of material in the tank. There is a black layer on top and a white layer underneath.

The damaged area has been v-grooved.

After taping the edge in place, we used a round cutting burr to v-groove the area.

The damaged area being welded with the Steinel hot air welder and LDPE welding rod.

We then used the Steinel hot air welder and R04 LDPE welding rod to weld the area. We used the airless welder to smooth it out.

V-grooving the remaining edge.

The rest of the area has been v-grooved

We removed the tape from the edge and v-grooved the area.

Welding into the v-groove.

Smoothing the welded material

We finished welding the area and smoothed it out.

The damaged area has been repaired.

The final result.

Thanks to the black LDPE welding rod, the repair blends in pretty well. No refinishing is required, and the repair didn't take very long. Now the customer can reinstall the tank and put the mower back to work!