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U-Bolt Torque Values Description Size Torque lbf·ft (N·m) Spring Assembly U-Bolt High Nuts 5/8–18 Stage 1: Hand Tighten * Stage 3: 200 (271) * Stage 4: 180 to 230 (245 to 313) * 3/4–16 Stage 1: Hand Tighten * Stage 3: 200 (271) * Stage 4: 270 to 330 (367 to 449) * 7/8–14 Stage 1: Hand Tighten * Stage 3: 200 (271) * Stage 4: 420 to 500 (571 to 680) * 1–14 Stage 1: Hand tighten * Stage 3: 200 (271) * Stage 4: 520 to 600 (707 to 816) * * Tighten in a diagonal pattern as shown in Table 1, U-Bolt Torque Values 01/05/99 f320783 1 2 3 4 Fig. 12, Tightening Pattern for U-Bolt High Nuts Suspension 32 Business Class Trucks Maintenance Manual, July 1999 32/9 |