Usage:
1. There must be a minimum radial (running) clearance between the inside diameter of the rotating housing and turbine.
2. Check the clearance between the inside diameter of the rotating housing and the turbine as follows:
a) Install tooling (A) in four positions in the rotating housing as shown.
b) Put the rotating housing on a smooth flat surface. Install turbine (1) in the housing.
c) Put tooling (B) in the position shown.
d) Push turbine (1) toward tooling (B) until it makes contact with the inside diameter of the rotating housing. Adjust the dial indicator until it is on zero. Slide the turbine 180° away from tooling (B) until it makes contact with the other side of the rotating housing. Make a record of the dimension measured.
e) Make this check at several locations around the housing. Make a record of each of the dimensions measured. The largest dimension measured is used for the clearance between the two parts. The total clearance measured across the diameters must be .020 to .040 in. (0.51 to 1.02 mm) with a maximum permissible clearance of .045 in. (1.14 mm). The radial (running) clearance is half of the dimensions measured.
3. There must be a minimum radial (running) clearance between the turbine and stator. Check the clearance between the turbine and stator as follows:
a) Put turbine (1) on a smooth flat surface. Install tooling (A) at four positions around the turbine as shown.
c) Put stator (3) in position in the turbine. Make sure the welded fins in the stator are not in contact with tooling (A).
c) Put tooling (B) against the stator as shown. Move the stator toward tooling (B) until it makes contact with the inside diameter in the turbine. Adjust the dial indicator until it is on zero. Slide stator (3) 180° away from tooling (B) until it makes contact with the other side of the turbine. Make a record of the dimension measured.
d) Make this check at several locations around the turbine. Make a record of each dimension measured. The largest dimension measured is used for the clearance between the two parts. The total clearance measured across the diameters must be .012 to .018 in. (0.30 to 0.46 mm) with a maximum permissible clearance of .030 in. (0.76 mm). The radial (running) clearance is half of the dimensions measured.
4. There must be a minimum radial (running) clearance between the stator and impeller.
5. Check the clearance between the outside diameter of the inner flange for the stator and the inside diameter of the impeller flange as follows:
a) Put the impeller on a flat smooth surface as shown. Install two 1/2" (12.7 mm) diameter rods (4) 18 in. (45.7 cm) long across the impeller as shown.
b) Put stator (3) in position on the rods.
c) Put tooling (B) in the position shown. Slide the stator toward tooling (B) until it makes contact with the inside diameter of the impeller and tooling (B). Adjust the dial indicator until it is on zero. Keep an even pressure on the stator when it is moved. Move the stator away from tooling (B) 180° until it makes contact with the other side of the impeller. Make a record of the dimension measured. Make this check at several locations around the impeller and stator. Make a record of each dimension measured.
NOTE: Turn the impeller around tool (A) and the stator when different locations are measured.
d) The largest dimension measured is used for the clearance between the two parts. The total clearance measured across the diameters must be .009 to .015 in. (0.23 to 0.38 mm) with a maximum permissible clearance of .024 in. (0.61 mm). The radial (running) clearance is half of the dimensions measured.
6. Check the ring gap in the carrier as follows:
a) Install seal ring (5) in carrier (6).
b) Check the seal ring with a feeler gauge (7). The ring gap must be .005 to .015 in. (0.13 to 0.38 mm).