TM 9-2320-209-10-1 4-18. OPERATING THE DEEP WATER FORDING KIT. TOOLS: Straight bar plug wrench Ratchet wrench FRAME 1 NOTE Trucks with deep water fording kits can ford hard bottom crossings up to 72 inches deep. 1. Using straight bar plug wrench and ratchet wrench, unscrew drain plug (1) from storage boss (2) on flywheel housing. 2. Screw drain plug (1) into drain port (3). GO TO FRAME 2 4-398