PROCEDURE
REPLACE TIGHT PLUG
Tech Tips
If coolant leaks from a tight plug or a plug is corroded, replace it.
Remove the tight plugs.
Apply adhesive to new tight plugs.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Note
Do not start the engine for 1 hour after installation.
Using SST and a hammer, tap in the tight plugs as shown in the illustration.
Position A
Position B
Position C
| *a | RH Side | *b | Rear Side |
| *c | LH Side | *d | Stops |
REPLACE STRAIGHT PIN
Tech Tips
It is not necessary to remove a straight pin unless it is being replaced.
Remove the straight pins.
Using a plastic-faced hammer, tap in new straight pins to the cylinder block sub-assembly.
| Standard protrusion height |
|---|
| 14.5 mm (0.571 in.) or less |
| *a | Rear Side | *b | 22 mm (0.866 in.) |
| *c | 10 mm (0.394 in.) | *d | Protrusion Height |
REPLACE RING PIN
Tech Tips
It is not necessary to remove the ring pin unless it is being replaced.
Remove the ring pins.
Using a plastic-faced hammer, tap in new ring pins to the cylinder block sub-assembly.
| Standard protrusion height |
|---|
| 4.5 mm (0.177 in.) or less |
| *a | Front Side | *b | Rear Side |
| *c | Cylinder Head Sub-assembly Side | *d | 7 mm (0.276 in.) |
| *e | 14.5 mm (0.571 in.) | *f | 8 mm (0.315 in.) |
| *g | 11 mm (0.433 in.) | *h | Protrusion Height |
REPLACE NO. 1 TAPER SCREW PLUG
Tech Tips
If a No. 1 taper screw plug is deformed or its threads are damaged, replace it.
Remove the No. 1 taper screw plug.
Clean the cylinder block sub-assembly side hole and new No. 1 taper screw plug with non-residue solvent.
Apply adhesive to 2 or 3 threads of the No. 1 taper screw plug.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Install the No. 1 taper screw plug.
REPLACE CONNECTING ROD SMALL END BUSH
Using SST and a press, press out the connecting rod small end bush.
Using a round file, lightly file off any roughness from the small end of the connecting rod sub-assembly.
| *a | Oil Hole |
| *b | Ball |
Attach a new connecting rod small end bush to SST with the ball of SST inside the oil hole of the connecting rod small end bush.
| *a | Oil Hole |
Align the oil holes of the connecting rod small end bush and connecting rod sub-assembly.
| *1 | Connecting Rod Small End Bush |
Using SST and a press, press in the connecting rod small end bush.
Using a pin hole grinder, hone the connecting rod small end bush to obtain the specified clearance between the connecting rod small end bush and piston pin.
| Standard oil clearance |
|---|
| 0.004 to 0.012 mm (0.0002 to 0.0005 in.) |
Check that the piston pin fits at normal room temperature.
Coat the piston pin with engine oil, and push it into the connecting rod with your thumb.