PLATE A.-RH 3J7737 - Caterpillar

Cleaning And Inspection
Inspect all rotating parts for binding and damage caused by rubbing on adjacent parts.Wash all parts with cleaning solvent and dry thoroughly. Use a piece of wood to clean the carbon from the turbine housing and the nozzle.The turbine wheel must be cleaned with cleaning solvent to dissolve the carbon. When hard carbon deposits are formed, soaking in a solvent-type cleaner for an hour or more is required. The loosened particles must all be scraped off with a stiff brush or a specially shaped piece of wood and, if necessary, the whole process repeated. If the wheel is covered with soot only, washing with a stiff brush and cleaning solvent and then rinsing with clean water will be sufficient.
The rotating components must be thoroughly cleaned in order to maintain critical balance of the unit. Do not use a wire brush or wheel.
Assembling Turbocharger
Keep out dirt and foreign material. Be sure all parts are clean.Bearing Housing
Install snap ring (4), wear washer (1) and bearings (3) as shown. Lubricate the bearings before installing them.
BEARING INSTALLATION
1-Wear washer. 2-Bearing housing. 3-Bearings. 4-Snap rings. Earlier bearings (3) were interchangeable. Later (and parts service for earlier) are not. Install the bearing without the groove nearest the turbine.
Do not scratch or damage the housing bore when installing snap ring (4). Install the rings with the flat side toward its bearing.
Install back plate (5) on the bearing housing (2) and secure with snap ring (6).
BACK PLATE INSTALLATION
2-Bearing housing. 5-Back plate. 6-Snap ring. The beveled-type snap ring (6) must be installed with the flat side toward the back plate. Make certain the ring is secure in the groove.Rotating Parts
1. Lubricate the ring grooves and use fabricated ring expander sleeve (1) to install the two ring seals on the shaft.
DETAIL FOR FABRICATING RING EXPANDER SLEEVE2. Remove the sleeve and rotate the rings until the gaps are 180° apart.
INSTALLING RING SEAL
1-Ring expander sleeve.3. Center the ring seals on the shaft with the gaps 180° apart and insert the shaft into the turbine end of the bearing housing. If the rings do not enter the housing easily, remove the shaft and re-center the rings.4. Place bearing housing (2) and shaft (3) as a unit on top of fixture adapter (5) using support screw (6) to hold the shaft in place. Clamp bearing housing (2) flange to the fixture adapter, making sure there is some play between the support screw and the end of the shaft.
SHAFT INSTALLATION
2-Bearing housing. 3-Shaft. 4-Fixture. 5-Fixture adapter. 6-Support screw.5. Install spacer (10), thrust ring (9), spacer (8) and thrust bearing (7). The bolt holes in the spacer and thrust bearing are staggered to eliminate the possibility of installing these items incorrectly.
INSTALLING THRUST BEARING
7-Thrust bearing. 8-Spacer. 9-Thrust ring. 10-Spacer.6. Install thrust ring (12) and oil deflector (11).7. Tighten bolts (17) to torque value given in the SPECIFICATIONS and bend the locks which secure bolts (17).8. Place sleeve (14) over the shaft. Position sleeve (14) with ring seal grooves away from the bearing housing.
INSTALLING OIL DEFLECTOR
11-Oil