SPRING-VALVE 1A8312 - Caterpillar

Illustration 1 g01619265
Rear view of engine
Note: Lubricate the shaft, the bearing bore, and the thrust faces of the idler gear assembly with clean engine oil. (1) Torque for the bolts of the idler gear assembly ... 55 10 N m (41 7 lb ft) (2) Lubricate the shaft, the bearing bore, and the thrust faces of the camshaft gear assembly with clean engine oil. (3) With the number one piston in the top dead center position, align the timing marks. The mark on the camshaft gear must be in alignment with the mark in the rear housing.
Illustration 2 g01400123
Tightening sequence
Note: Tighten the bolts for the camshaft gear in the sequence 1, 4, 2, 5, 3, 6, 1, 4. Refer to Illustration 2. (4) Torque for the 12 bolts of the camshaft gear assembly ... 240 40 N m (175 30 lb ft) (5) Install the plate with the side marked "OUT" away from the gear face. Note: Lubricate the shaft, the bearing bore, and the thrust faces of the idler gear assembly with clean engine oil. (6) Torque for the bolts of the idler gear assembly ... 55 10 N m (41 7 lb ft)Note: Lubricate the shaft, the bearing bore, and the thrust faces of the idler gear assembly with clean engine oil. (7) Torque for the locking bolt of idler gear assembly ... 55 10 N m (41 7 lb ft) (8) Torque for the bolts for the stub shaft of idler gear assembly ... 135 20 N m (100 15 lb ft) (9) Install the thrust plate with the side marked "OUT" away from the gear face. (10) With the number one piston in the top dead center position, align the timing marks. The mark on the idler gear must be in alignment with the mark on the crankshaft gear. (11) Lubricate the shaft, the bearing bore, and the thrust faces of the cranshaft gear assembly with clean engine oil.
Illustration 3 g01619262
Section A-A
(12) Lubricate the bore and the O-ring seal lightly with the lubricant that is being sealed.