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Instructions for Disassembling a 12,000 lb Bulldog Jack | etrailer.com
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Instructions for disassembling a 12,000 lb bulldog jack
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Diagram of a 10k Bulldog Landing Gear Jack for Gear Replacement

Patent US6926261 - Trailer tongue jack - Google Patents

Instructions for Disassembling a 12,000 lb Bulldog Jack | etrailer.com

Tongue Jacks - Repair Parts | Dutton-Lainson Company

Trailer Jack Diagram

Wiring Diagram for the Replacement Electric Jack Switch with Harness