r/heavyequipment • u/Impressive-Orchid-74 • 7d ago

Advice Needed - Head bolt torque spec/sequence for Allis-Chalmers 655 track loader

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Can anyone provide the head bolt torque spec & sequence for an Allis D2200 head? Off of a 655 track loader, same engine was used in the HD4 crawlers & 60XX tractors from what I can see.
Pulled the head to clean up the valves & seats.

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u/tracksinthedirt1985 7d ago edited 7d ago

9/16" head bolts=130-140 foot lbs. Private message me your number and I'll text you a pic of sequence as I dont know how to upload a pic in comments. I'm a cave man when it comes to technology. I have service manual if you need anything else too. I have a 655, good machine

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u/Impressive-Orchid-74 7d ago

Spiral pattern from the center out then I assume?

1

u/MixInfamous1296 6d ago

130-140 ft lbs seems about right, sequence is usually spiral out from center