C-10 and C-12 Truck Engines Caterpillar

Illustration 1	g01437478
(2) Carrier bearing housing (5) Bearing

Illustration 2	g01437480

(1) Output shaft (PTO)

Diameter of the output shaft (A) ... 60.245 ± 0.025 mm (2.3718 ± 0.0010 inch)

End play of the output shaft ... 0.97 ± 0.43 mm (0.038 ± 0.017 inch)

(3) Carrier bearing

The carrier bearing should be installed to the following depth (B) in the carrier bearing housing. ... 1.6 ± 0.5 mm (0.06 ± 0.02 inch)

When the engine is viewed from the rear, the split in the bearing should be located counterclockwise from the center of the top bolt at the following angle. ... 112 ± 10 degrees

(4) Drive gear

Inside diameter of the drive gear ... 60.320 ± 0.025 mm (2.3750 ± 0.0010 inch)

The clearance between the output shaft (1) and the drive gear (4) ... 0.025 to 0.125 mm (0.0010 to 0.0050 inch)

(6) Thrust washer

Thickness of the thrust washer ... 4.690 ± 0.025 mm (0.1846 ± 0.0010 inch)

(7) Thrust plate

Thickness of the thrust plate ... 6.75 mm (0.266 inch)

(8) Thrust washer

Thickness of the thrust washer ... 4.690 ± 0.025 mm (0.1846 ± 0.0010 inch)

(9) Idler gear

Inside diameter of the idler gear ... 88.90 ± 0.013 mm (3.500 ± 0.0005 inch)

(10) Seal

Lubricate the sealing lip lightly with the lubricant that is being sealed.

Install the seal to the following depth. ... 2.5 ± 0.5 mm (0.10 ± 0.02 inch)

Illustration 3	g01437483

(11) Bearing

The bearing must not extend beyond either face of the idler gear.

The relief groove in the bearing must line up with the relief grooves in the idler gear within the following value. ... 2 degrees