3508B Engine for Caterpillar Built Machines Caterpillar

Illustration 1	g00893057

(1) Flywheel housing

(2) Front housing

(3) 197-3888 Crankshaft Seal Group (rear)

(4) 113-8432 Crankshaft Seal Group (front)

Dimension (A) is equal to the following amount. ... 6.86 ± 0.13 mm (0.270 ± 0.005 inch)

(5) 184-2443 Seal

(6) The wear sleeve is installed from both ends of the crankshaft at the following distance.. ... 0.5 ± 0.5 mm (0.020 ± 0.020 inch)

(7) The crankshaft seal is installed from both ends of the crankshaft at the following distance. ... 8.0 ± 0.5 mm (0.315 ± 0.020 inch)

Crankshaft seals must be installed in the way that is shown. Make sure that the correct seal is installed on each end of the crankshaft. Use 113-8432 Crankshaft Seal Group on the front. Use 197-3888 Crankshaft Seal Group on the rear.

(8) Wear sleeve

Removal

1. Remove the seal from each end of the engine.

   Note: Seals and wear sleeves cannot be used again, after the seals and the wear sleeves are separated.

2. Remove the wear sleeves with the 5P-7409 Sleeve Distorter and the 6V-3143 Distorter Adapter.

Installation

1. DO NOT separate wear sleeve (8) from crankshaft seals (3) and (4). Once the wear sleeves and crankshaft seals are separated, the crankshaft seals cannot be used again.

   Note: For a complete procedure with illustrations, refer to Disassembly And Assembly.

2. Install the sleeve and seal assembly with the correct tools.

3. Clean the outer surface of the crankshaft and the inner surface of wear sleeve (8) with 169-5464 Quick Cure Primer.

4. Carefully, put a thin coat of 4C-9507 Retaining Compound on the inner surface of wear sleeve (6) and on the crankshaft surface.

5. Install crankshaft seals (3) and (4) with wear sleeve (8) as a unit. Install the unit on the end of the crankshaft with the correct tools.