FRAME Sliding Fifth Wheels Lubricate bearing surface of support bracket through the grease fittings on the side of the fifth wheel plate. Use a water resistant lithium-base grease. NOTE The plate must be lifted up slightly to relieve the weight of the bracket while applying grease. 5 (03/17) Y53-6077-1B1 5-115 FAS- TENER SIZE TORQUE * Nm Lb-Ft M12 75-101 55-75 M16 163-217 120-160 M20 352-460 260-340 * ESNA Style Lock Nut, with nylon insert. Lubricate nylon insert nut lightly with SAE 20/30 oil.