C13 On-highway Engine Caterpillar

Illustration 1	g01625030
(4) Accessory drive assembly

Note: During assembly, the rear face of the housing and the front face of the cylinder block must be free of oil, fuel, water, dirt, assembly compounds and any other contaminants.

Note: Apply 8T-9022 Silicone Gasket in order to fill the space at the connecting joint of the front housing, engine oil pan, and cylinder block.

(1) Use the self-locking bolt of M8 x 1.25 - 25 mm to fasten the cover to the front housing.

Note: The self-locking bolt (1) is different from the other cover bolts.

(2) Use 17 bolts of M8 x 1.25 - 30 mm to fasten the cover to the front housing.

(3) Use nine bolts of M8 x 1.25 - 40 mm to fasten the front housing to the cylinder block.

Illustration 2	g01681455
(6) Cover assembly

(7) Torque for 19 bolts ... 28 ± 7 N·m (21 ± 5 lb ft)

Note: The crankshaft seal group (5) is a part of the front housing. Lubricate the O-ring seal lightly with the lubricant that is being sealed.

Illustration 3	g00952129
Tightening sequence

Note: Use the tightening sequence for the crankshaft seal group (5) that is shown in Illustration 3 in order to tighten the nuts.