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SPECIFICATIONS
Timing Gear Cover
449
Figure 449 — Sealant Application Pattern — Cover to Mounting Plate
450
Figure 450 — Torque Sequence Screw Numbers — Cover to Head
Remove all old sealant before attempting to apply new sealant.
Apply a 2 mm (5/64 inch) bead of MACK approved sealant to the timing gear cover following the pattern shown.
Attach the cover to the timing gear mounting plate within 20 minutes of applying the sealant.
Step 1. Screw No. 1 Hand tighten
Step 2. Align cover to cylinder head so that sealing surfaces are flush at points A.
Step 3. Tighten all screws. 24 ±4 N•m (18 ±3 lb-ft)