TM 9-2520-246-34-1 CHAPTER 2 EQUIPMENT GROUP MAINTENANCE Section I. SCOPE 2-1. EQUIPMENT ITEMS COVERED. Transmission model 3053A, transfer models T-136-21 and T-136-27, and power takeoff models WN-7-28, WND-7-28, and P-136-C used on the 2 1/2-ton, 6x6 series trucks are covered in this manual. 2-2. EQUIPMENT ITEMS NOT COVERED. All equipment items are covered in this manual. Section II. MAINTENANCE OF TRANSMISSION TOOLS: Mechanical puller kit, pn 8708724 Mechanical puller adapter, pn 7083254 Power train rebuild tool kit, pn 7950356 SUPPLIES: Dry cleaning solvent, type II (SD-2), Fed. Spec P-D-680 Multipurpose lubricant, GO 85/140, MIL-L-2105 Lubricating oil, ICE, OE/HDO 10, MIL-L-2104 Artillery and automotive grease, type GAA, MIL-G-10924 Safety wire MS20995F47 Transmission assembly gasket set Clutch housing seal Rear bearing mainshaft seal Tags Wood block 6 inches x 6 inches x 1 inch Wood block 12 inches x 4 inches x 1 inch (2) Compressed air source, 30 psi max PERSONNEL: Two EQUIPMENT CONDITION: Transmission on workbench. 2-3. CLEANING BEFORE DISASSEMBLY. This paragraph gives instructions for cleaning the transmission assembly before disassembly. Note and scribe transmission case in places that have oil soaked road mud. It is not necessary to mark oil spots around gaskets or seals since new gaskets and seals will be put in. Scrape, brush, and steam clean all dirt and road mud from transmission assembly. 2-1