Toyota Land Cruiser
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engines
+ 3.1. Engines 2F and 3F-E
+ 3.2. Verkhneklapanny engine 1FZ-FE
- 3.3. Dismantle and major maintenance of the engine
3.3.1. Technical characteristics
3.3.2. Engine diagnostics by means of the vacuum gage
3.3.3. Compression check
3.3.4. Dismantle of the power unit
3.3.5. Removal and engine installation
3.3.6. Alternatives of major maintenance
- 3.3.7. Order of dismantling of the engine
3.3.7.1. Head of cylinders
3.3.7.2. Repair of valves
3.3.7.3. Shatunno-porshnevaya group
3.3.7.4. Crankshaft
3.3.7.5. Cleaning and check of the block of cylinders
3.3.7.6. Honningovaniye of cylinders
3.3.7.7. Rods and pistons
3.3.7.8. Radical and shatunny bearings
+ 3.3.8. Engine assembly order
3.3.9. Engine start-up after repair and a running in
+ 3.4. Engine electric equipment
+ 4. Systems of cooling, heating
+ 5. Fuel and exhaust systems
+ 6. System of decrease in toxicity
+ 7. Transmission
+ 8. Brake system
+ 9. Suspension brackets and steering
+ 10. Body
+ 11. Electric equipment
+ 12. Electroschemes
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Radical and shatunny bearings at major maintenance of the engine are subject to the obligatory replacement, however the bearings which were in operation should be checked carefully to restore the general condition of the engine at the moment of repair.
Causes of destruction of bearings of a cranked shaft are insufficient greasing because of the wrong assembly, pollution and penetration of extraneous particles, frequent overloads of the engine, corrosion, etc. Irrespective of the reason which has caused destruction of bearings, it is necessary to eliminate it. Types of wear of radical and shatunny bearings
Selection of radical bearings
The chart for selection of shatunny bearings on engines 3F-E
| Marking And |
1,484-1,488 mm
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| Marking In |
1,488-1,492 mm
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| Marking With |
1,492-1,496 mm
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The chart for selection of shatunny bearings of the crankshaft on engines 3F-E
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1. Crankshaft
2. Central counterbalance
3. N3 bearing
4. Dimensional group of the bearing |
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Marking on the bearing
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| Number on the crankshaft |
3
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4
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5
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| Number on the block of cylinders |
6
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7
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8
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6
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7
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8
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6
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7
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8
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| Dimensional group подшипника* |
T3
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Т4
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Т5
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Т2
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T3
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Т4
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Т1
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Т2
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T3
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* Example: Number on the crankshaft 5, number on the block of cylinders 7 = dimensional group T2.
Diameter of radical bearings and internal diameter of an opening under radical bearings on engines 3F-E
| Diameter of a neck of the crankshaft |
№
|
mm
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| Marking-3 |
N1
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66.972-66.980
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N2
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68.472-68.480
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N3
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69.972-69.980
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N4
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71.472-71.480
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Marking-4
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N1
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66.980-66.988
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N2
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68.480-68.488
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N3
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69.980-69.988
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N4
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71.480-71.488
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Marking-5
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N1
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66.988-66.996
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N2
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68.488-68.496
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N3
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69.988-69.996
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N4
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71.488-71.496
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| Diameter of an opening under radical bearings |
N
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mm
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Marking-6
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N1
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72.010-72.018
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N2
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73.510-73.518
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N3
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75.010-72.018
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N4
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76.510-76.518
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Marking-7
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N1
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72.018-72.026
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N2
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73.518-73.546
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N3
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75.018-75.026
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N4
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76.518-76.526
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Marking-8
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N1
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72.026-72.034
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N2
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73.526-73.534
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N3
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75.026-75.034
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N4
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76.526-76.524
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The chart for selection of standard shatunny bearings on engines 1FZ-FE
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Put number
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| Marking on a rod |
1
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2
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3
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| Number on the crankshaft |
1
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2
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3
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1
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2
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3
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1
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2
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3
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| Marking of dimensional group подшипника* |
2
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3
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4
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3
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4
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5
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4
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5
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6
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* Example: Number on a rod 3 + number on the crankshaft 1 = Dimensional group of the bearing 4.
The chart for selection of standard radical bearings of the crankshaft on engines 1FZ-FE
|
| Put number |
| Marking on the block of cylinders |
1
|
2
|
3
|
| Number on the crankshaft | 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 |
| Marking of dimensional group подшипника* | 2 | 3 | 4 | 3 | 4 | 5 | 4 | 5 | 6 |
*primer: Number on the block of cylinders 2 + number on the crankshaft 1 = Dimensional group of the bearing 3.
Diameter of radical bearings and internal diameter of an opening under radical bearings on engines 1FZ-FE
| Diameter of an opening under radical bearings: |
|
– marking 1
|
74.026-74.032 mm
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| – marking 2 |
74.032-74.038 mm
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| – marking 3 |
74.03-74.044 mm
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| Diameter of a neck of the crankshaft: |
|
– marking 1
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68.994-69.000 mm
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| – marking 2 |
68.988-68.994 mm
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| – marking 3 |
68.982-68.988 mm
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| Thickness of standard bearings: |
|
– marking 2
|
2.489-2.492 mm
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| – marking 3 |
2.49-2.495 mm
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| – marking 4 |
2.495-2.498 mm
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| – marking 5 |
2.498-2.501 mm
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| – marking 6 |
2.501-2.504 mm
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| PERFORMANCE ORDER |
| 1. If bearings of standard dimensional groups are established, the new bearing steals up according to numbers put on replaced, and also on numbers on the block of cylinders and the crankshaft with use of tables. |
| 2. If the crankshaft was ground, bearings should be selected in car-care center in which polishing was carried out. |
| 3. After selection of bearings measure a gap in necks (see subsection 3.3.8.2). |
| 4. Industrially at assembly of the engine bearings with different color marking which is put on an edge of the loose leaf of the bearing are established. |
| 5. Marking of dimensional group of bearings is usually put from the loose leaf, turned to a back part of the crankshaft, except for the back radical loose leaf which is marked from turned to a forward part of the crankshaft. |
| 6. It is allowed to establish the top and bottom loose leaves from various dimensional groups. For example, to correct a gap on 0,0125 mm the standard loose leaf sometimes it is used with the loose leaf from group with the reduced diameter on 0,025 mm. |
Prevention
It is forbidden to establish pair of loose leaves if distinction of their diameters exceeds 0,025 mm. It is necessary to establish loose leaves differing on the size either all from above, or all from below.
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