Crankshaft & Main Bearings
WARNING: This page is about a different car, the 1992 Suzuki Swift, 1992 Suzuki Sidekick, and 1992 Suzuki Samurai. However, it is still accessible from the selected car via links, so may be relevant.
- Remove engine, or engine and transmission. See ENGINE under REMOVAL & INSTALLATION. Separate transmission from engine. Remove timing belt, sprockets, pulley and tensioner. See TIMING BELT under REMOVAL & INSTALLATION.
- Remove flywheel and oil pan. Remove rear main oil seal housing. Remove connecting rod caps. Remove main bearing caps. Remove crankshaft.
- Inspect journals for wear, taper and out-of-round condition. If specifications are exceeded, grind journals to undersize or replace crankshaft. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE SPECIFICATIONS.
- Standard main bearings are color-coded. See Fig 3 . Upper half of bearing has an oil groove. An arrow mark and number are embossed on each main bearing cap.
- Ensure arrow mark on main bearing cap faces toward crankshaft pulley. Bearing No. 1 is at crankshaft pulley end of engine. Bearing No. 5 is at flywheel end of engine.
- On SOHC engines, main bearing journal diameter is determined by numerical mark ("1", "2" or "3") stamped on crankshaft webs of cylinders No. 2 and 3. See Fig 1 . On DOHC engines, numerical mark ("1", "2" or "3") is stamped crankshaft web of cylinder No. 1. See appropriate CRANKSHAFT JOURNAL DIAMETERS table.
- The numerical marks on crankshaft web, read left to right, indicate journal diameters of bearings No. 1, 2, 3, 4 and 5, respectively.
- Determine bearing cap bore diameter with bearing removed. Bearing cap bore diamter is determined by letter ("A", "B" or "C") stamped on cylinder block mating surface. See Fig 2 . See appropriate BEARING CAP BORE DIAMETERS table.
- The letters stamped on cylinder block mating surface, read left to right, indicate cap bore diameters of bearing caps No. 1, 2, 3, 4 and 5, respectively. Five standard main bearing sizes are available. Bearing thickness is determined by color code. See Fig 3 . See COLOR CODE FOR STANDARD BEARINGS table.
- Use numerical marks on crankshaft webs and letters stamped on cylinder block mating surface to determine correct replacement bearing. See STANDARD BEARING APPLICATION table.
CRANKSHAFT JOURNAL DIAMETERS (1.3L)
| Numbers Stamped On Webs | In. (mm) |
|---|---|
| "1" | 1.7714-1.7716 (44.994-45.000) |
| "2" | 1.7712-1.7714 (44.988-44.994) |
| "3" | 1.7710-1.7712 (44.982-44.988) |
CRANKSHAFT JOURNAL DIAMETERS (1.6L)
| Numbers Stamped On Webs | In. (mm) |
|---|---|
| "1" | 2.0470-2.0472 (51.994-52.000) |
| "2" | 2.0468-2.0470 (51.988-51.994) |
| "3" | 2.0465-2.0468 (51.982-51.988) |
BEARING CAP BORE DIAMETERS (1.3L)
| Letters Stamped On Block | In. (mm) |
|---|---|
| "A" | 1.9292-1.9294 (49.000-49.006) |
| "B" | 1.9294-1.9296 (49.006-49.012) |
| "C" | 1.9296-1.9298 (49.012-49.018) |
BEARING CAP BORE DIAMETERS (1.6L)
| Letters Stamped On Block | In. (mm) |
|---|---|
| "A" | 2.2047-2.2050 (56.000-56.006) |
| "B" | 2.2050-2.2052 (56.006-56.012) |
| "C" | 2.2052-2.2054 (56.012-56.018) |
COLOR CODE FOR STANDARD BEARINGS
| Color Painted | Thickness: In. (mm) |
|---|---|
| Black | .0787-.0788 (2.000-2.003) |
| Blue | .0790-.0791 (2.009-2.012) |
| Green | .0786-.0787 (1.996-2.000) |
| No Paint | .0788-.0789 (2.002-2.006) |
| Yellow | .0789-.0790 (2.006-2.009) |
STANDARD BEARING APPLICATION
| Letter Stamped On Block | Numbers Stamped On Crankshaft Webs | ID/Color |
|---|---|---|
| "A" | "1" | Green |
| "A" | "2" | Black |
| "A" | "3" | No Paint |
| "B" | 1 | Black |
| "B" | "2" | No Paint |
| "B" | "3" | Yellow |
| "C" | 1 | No Paint |
| "C" | "2" | Yellow |
| "C" | "3" | Blue |
NOTE:
Manufacturer does not recommend grinding crankshaft on DOHC engine. Crankshaft surface has been treated to provide a hard surface. Grinding will reduce journal hardness and service life.