If your Wolf loom has a removable back beam, find parts here. Removable back beams attachs with knobs instead of machine screws.

See the diagrams above for looms with fixed back beams.

1. Identify the brake system on your loom (see diagrams above): if it does not have a barrel nut going through the back beam, the loom has an old brake system. If you see a long brake barrel nut going into the back beam, the loom has a middle brake system.
2. For old brake systems: Remove the machine screws and barrel nuts holding the fixed beam in place on the inside legs. Save these parts to install the new back beam.
3. For middle brake systems: Remove the machine screws holding the fixed beam in place on the inside legs. Remove the barrel nut from the left side of the loom (as seen from the front). On the right side of the loom, loosen the eye bolt until you can pull the long brake barrel nut out of the back beam. Save these parts to install the new back beam.
4. Lift the old back beam off the loom.
5. Set the new back beam in place between the inside legs.
6. For old brake systems: Attach the back beam with machine screws and barrel nuts.
7. For middle brake systems: Insert the long brake barrel nut into the back beam; attach with a machine screw. Attach the left side of the back beam with the remaining machine screw and barrel nut.
8. For middle brake systems: Reattach or tighten the eye bolt into the brake spring a few turns. Check the tension from the back of the loom: the warp beam should easily turn toward you (toward the back of the loom), and it should not turn away from you (toward the front of the loom). If the warp beam does turn away from you, tighten the eye bolt a few more turns and check tension again. Use as little tension as possible—once you cannot turn the warp beam away from you, do not tighten the eye bolt any further.