Assemble H-arms
Main Arms - build main arms, hang them on tractor, but do not weld anything until cross beam and bottom are aligned.
- [2] Cut 4-1/2” piece of 1-7/8” DOM.
- [2] Cut 3-1/2” piece of 1-7/8” DOM.
- Mark position of loader shaft for diameter of DOM.
- Torch loader shaft, considering that 1-7/8” DOM gussets are used.
- Measure location of loader arms on frame.
- Torch loader arm location in frame.
- Place gussets in tractor frame.
- Fit 1-7/8” shaft through gussets.
- [2] Mount 1-7/8” washers outside of frame and inside of arms.
- Insert DOM gusset into loader arm.
- Mount 1 loader arm at a time onto the shaft.
- Align both arms to rest on the bottom of the frame without any welding - then work on the cross arms - bolting them together while retaining alignment of bottom of arms.
Cross Arms - fit in cross arms, tighten, and then fix the pivot and QA pivot to retain alignment.
- Cut 54" cross arms.
- [4] Cut 1/2"x4"x6" angle - 6" long.
- Drill 3 holes on long side and 2 holes on short side.
- Long side goes on cross arm, shoft side goes on main arms.
- Measure location for mounting of cross arms on the main arms.
- Fit and clamp the cross arm in place.
- Transfer punch hole locations on one side of loader arms.
- Take loader arms off one by one.
- Mark other side of cross arm-mounting bolt locations.
- Annular cutter mag drill through main arms.
- Remount main arms on 1-7/8" shaft, use washers and 2 double split collars
- Align them
- Fit cross arms and bolt them on, using metal lock nuts.
Eyes - with cross arms tight, make eyes align,
- Cut [2] 3x7x1" pieces with bandsaw.
- Weld pieces together.
- Drill eye hole in weldment.
- Torch out a 3"x 1" slit in loader arm top.
- Cut piece of 1" rebar for inside of arms, reinforcement.
- Insert 1" shaft through both eyes
- Tack weld eyes and DOM pivots in place.
- Raise arms to make sure they clear the frame.
- Check for alignment, and realign if needed.
- Weld eyes and DOM pivot in place.
- Weld 1" rebar reinforcement in eyes.
- Move through the range of rotation of the QA plate to confirm alignment.
- After welding, grind and clean as needed.
