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Repair of the oil pump
| Fig. 5.14. Details of the oil pump 1 - tube relief valve; 2 - laying cork; 3 - a spring relief valve; 4 - plunger; 5 - a bolt of fastening of the oil pump; 6 - the pump housing; 7 - coupler sensor signal lamp oil pressure; 8 - Front crankshaft oil seal; 9 - the driving gear; 10 - driven gear; 11 - a cover of the housing; 12 - the screw of fastening of a cover; 13 - a lining of the body; 14 - a safety valve; 15 - mounting sleeve |
The device of the oil pump shown in Fig. 5.14.
NOTE Shown in Fig. 5.14 version of the oil pump is slightly different from the version of the pump is installed on the vehicle used for the shooting, location reducing and safety valve. However, all incoming parts are the same in all versions of pumps. |
You will need: the keys "24", "27" Allen key "8" Phillips screwdriver with a blade caliper, a set of flat probes.
NOTE If the gasket has remained on the pump housing and is not damaged, it can not be separated from the body. In this case, re-assembly of the pump, lubricate the gasket with a thin layer of sealant. |
2. Drain the oil from the pump. | | 3. Remove the housing bore any pointed tool (eg a screwdriver) front crankshaft oil seal. | 4. Remove the adapter from the oil pump body sensor 1 signal lamp oil pressure (if installed on the pump) and from the pump housing - safety valve 2 and 3 relief valve plug. Remove the spring from the housing 3 (see. Fig. 5.14) and the plunger 4 relief valve. |
A WARNING Spring relief valve is installed with an interference fit. To avoid injury, carefully unscrew the cap. |
NOTE Note: under the cap reducing valve gasket is installed, do not lose it. |
| | 5. Remove the five screws securing the cover of the pump ... | 6. ... and remove the cover. |
| | 7. Remove from the housing leading ... | 8. ... and a driven gear pump. |
9. Wash the pump housing and the removed parts to remove dirt and deposits. Dense varnish deposits from the interior of the pump, remove the previously softened them solvent.
HELPFUL ADVICE Lacquer oil deposits well removed with commercially available means to wash the engine (so-called "five-minute"). |
10. Inspect the body and pump cover. In the presence of cracks, scratches, casting defects, replace damaged threaded holes body (as it neremontoprigoden) or pump assembly. 11. Check the pressure reducing valve plunger for scratches and traces of jamming. Minor Dents and burrs can be removed grit stone fine grain. 12. Check the spring pressure relief valve on the residual deformation and bending. The length of the spring in a free state to be 81 mm. Strong compression or damaged, replace the spring. 13. Check the gears for metal chipping, scuffing and wear of the teeth. Replace any damaged gears or gears, which visually noticeable amplified sided wear of teeth. 14. Check the axial clearance between the ends of the gear and the plane of the pump cover. This can be done in two ways. | | 15. In the first method, measure the thickness of the leading ... | 16. ... and driven gears ... |
| | 17. ... and the depth of the bore in the housing under the gear. Calculate the axial clearance the difference arithmetic mean depth and thickness of the gear bore. | 18. In the second method, check the driven gear in the housing, put a metal ruler (or caliper) end on the body and measure the gap between the probe body and a ruler. |
19. Similarly, measure the axial clearance of the pinion gear. 20. Measured in both ways as possible clearances should be 0,045-0,100 mm for the driven gear and 0,035-0,085 mm pinion. If at least one of the gaps is not the specified value, replace the housing or pump assembly. 21. Assemble the pump in the reverse order to dismantling. Before pressing the pump cover in the front crankshaft oil seal, lubricate with engine oil. On the relief valve plug threads, apply an anaerobic thread lock Loctite 573 or a similar plug and tighten to 30 N ?� m (3.0 kgf ?� m). If you are installing a new gasket 13 (see. Fig. 5.14), attach it to the body with grease.
WARNINGS Use only original factory seal. Installation of spacers of a different thickness lead to malfunction of the pump. To prevent damage to the engine at the first start after the installation of the oil pump, before setting his body gear pump cavity fill all mineral grease lubricated for suction of oil from the oil sump. When first starting the engine with oil pump replaced once the oil pressure does not rise to the desired, immediately stop the engine, remove the oil pan and check the tightness of the connection to the pump suction tubes. If necessary, disassemble the pump again and again fill the cavity with mineral grease lubricated. In the absence of the required pressure in the lubrication system, even a short-term operation of the engine causing it to crash damage. |
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