Usage:
start by:
a) remove pistons
1. Remove the rings from the piston with tool (A).
2. Remove snap rings (3), piston pin (1) and connecting rod (2) from the piston.
3. Remove the bearings from the connecting rod and connecting rod cap.
4. See USE OF PISTON PIN BEARING REMOVAL AND INSTALLATION TOOLS, SPECIAL INSTRUCTIONS, Form No. SMHS7295 for more information of removal and installation of piston pin bearings.
TYPICAL EXAMPLE
5. Heat the connecting rod to a temperature of 350° to 400°F (176° to 204°C). Put 5P8654 Spacer (8) in the base plate. Put the connecting rod on the base plate of tooling (B).
6. Put the connecting rod piston pin bearing end in the center of the port assembly of tooling (B). Install 5P8656 Adapter (7).
| NOTICE |
|---|
The piston pin bearing joint must be installed in the top half of the rod eye at either position (Y) above the centerline. |
7. Install new piston pin bearing (6) on adapter (7).
NOTE: The old piston pin bearing is pushed out by tooling (B) as the new piston pin bearing is installed.
8. Install 5P8663 Adapter (5) with the counterbore up.
9. Put pusher (4) on adapter (5).
10. Use tooling (B) to push the new piston pin bearing into the connecting rod until adapter (5) of tooling (B) makes full contact with the connecting rod surface.
11. Remove the connecting rod and the old piston pin bearing from tooling (B).
12. Check the piston pin bearing bore diameter after the bearing is installed. The correct dimension is 1.5010 ± .0003 in. (38.125 ± 0.008 mm).
Assemble Pistons (Precombustion Chamber)
1. Intall the connecting rod in the piston with the bearing tab groove (slot) on the same side as the valve pockets in the top of the piston.
2. Install the piston pin and snap rings.
3. When old pistons are used, clean the piston grooves with tool (A).
4. Install the connecting rod bearings.
5. Install the spring for the oil ring. Install the oil ring with tool (B). The gap in the ring must be approximately 180° from the oil ring spring connection.
6. Install the compression ring with tool (B). The side of the ring that has the identification "TOP" must be toward the top of the piston. The gaps in the rings must be approximately 120° apart.
NOTE: Compression rings that do not have identification must be installed with the edge that has the bevel toward the top of the piston.
end by:
a) install pistons