BLADE AS-WIPER 3531975 - Caterpillar

Make sure the screen that is located in the thrust plate is clean and free of obstructions. Install the thrust bearing and the various washers and spacers according to the turbocharger that is being serviced. Make sure to apply clean oil to all parts prior to installation.
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Apply clean engine oil to the lubrication hole of the backing plate, if equipped.
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Install the backing plate. Make sure that the oil hole that is located in the backing plate is aligned with the oil hole that is located in the center housing, as shown.
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Installing 6V-2055 Grease to the seals on the spacer
Apply 6V-2055 Grease to the grooves of the spacer and the seals for the compressor wheel side of the turbocharger. Install the seals into the spacer. Note: The split in the seals should be located 180 degrees apart.
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Example of installing the spacer and the seals
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Example of spacer installation tool
Install the spacer by squeezing the seals together and pressing the spacer into the backing plate. A tool can be machined that aids the installation of the spacer and the seals. The tool should be a simple sleeve with the inner diameter tapered so that the seals are compressed as the spacer is pushed through the sleeve.
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Rotate the center section to be sure that the assembly spins correctly and there is no binding.
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Lightly tapping the compressor wheel
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Torquing the nut
Install the compressor wheel onto the shaft. Lightly tap the compressor onto the shaft until the compressor wheel is fully seated. Apply 9S-3263 Thread Lock Compound to the threads of the turbine shaft. Tighten the nut to the correct specifications.Note: It is not recommended to use the nut to install the compressor wheel. This may result in galling of the compressor wheel from the nut turning against the surface.
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Boreless compressor wheels should be threaded onto the turbine shaft and tightened until the compressor wheel bottoms out on the turbine shaft. Then, turn the compressor wheel for an additional 2 degrees.
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Checking the end play
Check the end play by placing the end of a dial indicator on the end of the turbine shaft or the compressor wheel. Move the turbine shaft back and forth and observe the reading on the dial indicator. The end play must fall into the specifications that are listed. Refer to the specifications manual for your specific engine for the proper end play specifications.
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Install the cartridge assembly into the turbine housing, as shown.
Install the clamps and tighten. Tap the clamps with a hammer on all sides. Tighten the clamps again to the proper specifications. Repeat for the compressor housing.