D250E Series II and D300E Series II Articulated Trucks Power Train Caterpillar

Wheel Bearings and Duo-Cone Seals - Install

Usage:

Installation Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	6V-2157	Link Bracket	2
B	1U-6440	Duo-Cone Seal Installation Tool	1

Note: Make sure that the machine is properly supported in order to install the wheels. See Operation and Maintenance, "Jacking Locations" .

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Illustration 1	g00520897

Lower the temperature of bearing cup (11) and bearing cup (12) . Install the bearing cups in wheel hub assembly (2) while the bearing cups are still cold.

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Illustration 2	g00520632

Use 32 bolts (13) in order to attach brake rotor (14) to wheel hub assembly (2) . Tighten bolts (13) to a torque of 270 N·m (200 lb ft) .

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Illustration 3	g00520903

Install bearing (10) on the shaft of inner hub (9) and ring gear.

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Illustration 4	g00520907

Install inner hub (9) and ring gear in wheel hub assembly (2) .

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Illustration 5	g00520628

Make sure that the rubber toric seals are clean and dry. Make sure that all metal surfaces that make contact with the rubber toric seals are clean and dry. Use Tooling (B) in order to install Duo-Cone seal (8) in the retainer. Put a small amount of clean SAE 30W oil on the metal surfaces that make contact. See Special Instruction, "Assembly and Installation of Conventional Duo-Cone Seals" .

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Illustration 6	g00520627

Install O-ring (7) on spindle (4) .

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Illustration 7	g00520626

Use Tooling (A) in order to attach a suitable hoist to spindle (4) . Spindle (4) has a weight of 33 kg (73 lb) .

Use 18 bolts (5) in order to attach two brake mounting plates and spindle (4) to the axle housing.

Note: Make sure that the Duo-Cone seals are not damaged during the installation and make sure that the seals are kept clean and dry.

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Illustration 8	g00520625

Install bearing (3) on spindle (4) .

Use Tooling (A) in order to attach a suitable hoist to wheel hub assembly (2) . Wheel hub assembly has a weight of 125 kg (276 lb) .

Make sure that the rubber toric seals are clean and dry. Make sure that all metal surfaces that make contact with the rubber toric seals are clean and dry. Use Tooling (B) in order to install Duo-Cone seal (8) in the seal seat of wheel hub assembly (2) . Put a small amount of clean SAE 30W oil on the metal surfaces that make contact.

Install wheel hub assembly (2) on spindle (4) .

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Illustration 9	g00521007

Measure the thickness of retainer (1) at the three small holes in the retainer. Find the average of the three measurements.

Use only three bolts in order to install retainer (1) without the shims. Install the bolts next to the three small holes that were used for the measurements. Tighten the three bolts to a torque of 100 N·m (75 lb ft). Turn wheel hub assembly (2) for several revolutions and tighten the bolts again to a torque of 100 N·m (75 lb ft) .

Loosen the three bolts. Tighten the three bolts again to a torque of 25 N·m (18 lb ft). Turn the wheel hub assembly (2) for several revolutions. Repeat this procedure until the bolt torque stays at 25 N·m (18 lb ft) .

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Illustration 10	g00521038

Use a depth micrometer (17) in order to measure the distance to the end of the spindle through the three small holes. Find the average of the three measurements.

Subtract the average measurement that was found in Step 13 from the average measurement that was found in Step 16. This is the gap between the end of the spindle and the retainer.

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Illustration 11	g00521049

Make up shim pack (18) with a thickness equal to the gap that was found in Step 17 plus 0.20 mm (.008 inch) .

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Illustration 12	g00521077

Install shim pack (18) , retainer (1) , and the bolts. Tighten the bolts to a torque of 150 N·m (110 lb ft) .

End By:

Install the final drive planet carriers and the ring gears. See Disassembly and Assembly, "Final Drive - Install" .
Install the brake caliper assembly. See Disassembly and Assembly, "Service Brakes - Install" .
Install the tire and rim. See Disassembly and Assembly, "Tire and Rim - Install" .