HUB-IMPELLER 8E8160 - Caterpillar

Pressure test the idler using FT-2724 Nitrogen Pressure Testing Tool.Introduce nitrogen into the lubricant cavity to a pressure of 138 kPa (20.0 psi). The cavity is to be sealed and pressure observed for 10 seconds. A pressure drop of 2.5 percent, 3.5 kPa (0.5 psi) or less is acceptable.
Do not allow nitrogen to enter in a surge and do not use pressure in excess of 138 kPa (20.0 psi). This action may damage the seals.
Note: Refer to Undercarriage Reconditioning Bulletin, SEBF8576, "Idler Oil Fill Volume" for proper fill volumes and oil types.
Illustration 34 g02409515
Determine shaft type.
Illustration 35 g02409516
Add oil to idler.
Add the correct quantity of oil into the idler.
Table 10
Idler Oil Fill Volumes
Model Shaft Part Number Shaft Type Oil Volume
D11R/ D11N 6T-8660 Extruded 3000 25 ml
153-9461
138-4331 Double upset 1800 25 ml
D10R/ D10N 7T-0955 Extruded 1300 25 ml
128-9693 Double upset 950 25 ml
D10L 7G-2622 Extruded 2750 25 ml
138-4330 Double upset 1650 25 ml
D9R/ D9N 7T-2778 Extruded 1300 25 ml
138-9378 Double upset 800 25 ml
D9L 3T-3617 Extruded 1500 30 ml
140-0291 Double upset 775 25 ml
D8R/ D8N/ D8L 8P-6938 Extruded 1050 25 ml
138-9712 Double upset 700 25 ml Note: Refer to Table 10 for inverted idler oil fill volumes.Note: Oil fill volumes depend on the shaft configuration. Refer to Illustration 34 to determine shaft type and refer to Undercarriage Reconditioning Bulletin, SEBF8576, "Idler Oil Fill Volume" for proper oil type and fill volume.
Table 11
Plug Depth Specifications
Model Usage Plug Height above Stopper Surface
D11N, D11R, D10, D10N, D10R,
D9L, D9N, D9R, D8L, D8N,
D8R, D7H, 973, 973 Steel Mill, D6H,
D6R, D5H, D4H, 963, 963B,
953, 943, 939 0.0 5.0 mm (0.00 0.20 inch)
Illustration 36 g02409517
Insert plug into stopper.
Use the 5P-7419 Installer Tool to insert the plug into the stopper to the proper depth. (Refer to Table 11 for proper plug depth specifications.)Note: The plug must not be recessed below the stopper surface after assembly.
Illustration 37 g02409520
Tap end of idler shaft to determine if oil is present.
Tap the end of the idler shaft to determine if oil is present in the idler. If there is a dull thud, the idler contains oil. If there is a ringing noise, the idler is empty and needs filled.