2.5.2. Removal, check and installation of the oil pump

Removal
Take off a belt of the drive of the gas-distributing mechanism.
Turn off bolts of fastening of an oil case.
Remove an oil case.
Remove an oil receiver of the oil pump.

Fig. 2.187. Oil pump assembled


Remove a forward cover of the block of cylinders (the case of the oil pump) assembled (fig. 2.187).
Remove a forward cover of the block of cylinders (the case of the oil pump) assembled.
Take out the conducting and conducted gear wheels from a forward cover of the block of cylinders. Adjusting tags are applied on the leader and conducted gear wheels.

Check
Check a forward cover of the block of cylinders for existence of cracks or damages and if necessary replace it.
Check a forward epiploon of a bent shaft for existence of wear or damage of working edges.
Check an oil case for existence of breakages, damages or cracks and if necessary replace it.
Check an oil receiver for existence of breakages, damages or cracks and if necessary replace it.
Check the surfaces of contact of the case of the oil pump with pump gear wheels for existence of damages or wear.
Check teeths of gear wheels for existence of wear or damages.

Fig. 2.188. Check of a radial gap between the outer diameter of the conducted gear wheel and a nest in a pump housing by means of the flat probe


Check a gap between the outer diameter of the conducted gear wheel and a nest in a pump housing (fig. 2.188).
The radial gap between the outer diameter of the conducted gear wheel and a nest in a pump housing has to make 0,120–0,185 mm.
The gap between teeths of gear wheels has to make 0,025–0,069 mm.
Gap between end faces of gear wheels and the plane of a pump housing, mm:
– the conducted gear wheel – 0,04–0,09;
– the leading gear wheel – 0,040–0,085.

Fig. 2.189. Check of a gap between teeths of gear wheels by means of the flat probe


Check a gap between teeths of gear wheels of the pump (fig. 2.189).

Fig. 2.190. Check of a gap between end faces of gear wheels and the plane of a pump housing by means of the flat probe


Check a gap between end faces of gear wheels and the plane of a pump housing (fig. 2.190).
Check ease of movement of a plunger of the reducing valve in a pump housing nest.
Check a spring of the reducing valve for existence of deformation and breakage of rounds.
Length of a spring of the reducing valve, mm:
– in a free state – 46,6;
– under load of 6,1 kgfs – 40,1.

Assembly

Fig. 2.191. Combination of the leader ivedomy gear wheels


Establish the conducting and conducted gear wheel in a forward cover of the block of cylinders (the case of the oil pump), watching their correct arrangement on tags (fig. 2.191).
Establish a cover of the oil pump and tighten fastening bolts the specified moment. After an inhaling of bolts check smoothness of rotation of gear wheels of the pump.
Moment of an inhaling of bolts of fastening of a cover of the oil pump: 8–12 N · m.
Establish a plunger and a spring of the reducing valve, previously having covered with engine oil a plunger. Tighten a stopper of the reducing valve the specified moment.
Moment of an inhaling of a stopper of the reducing valve: 40–50 N · m.

Fig. 2.192. Bolts of fastening of a forward cover of the block of cylinders (are designated by Latin letters)


Establish a forward cover of the block of cylinders with new laying and tighten fastening bolts (fig. 2.192.) the specified moment.
Moment of an inhaling of bolts of fastening of a forward cover of the block of cylinders: 20–27 N · m.
Length of bolts:
А: 30 mm;
В: 45 mm;
С: 60 mm;
D: 22 mm.

Installation of an epiploon of the case of the oil pump

Fig. 2.193. Installation of the special tool


Install the special tool (the directing plug of an epiploon 09214-32100) in an opening of the case of the oil pump (fig. 2.193).

Fig. 2.194. Press fitting of a forward epiploon of a bent shaft


Press an epiploon in an opening of a forward cover of the block of cylinders a mandrel (fig. 2.194).
Establish an oil receiver.
Clear both parties of laying of an oil case and the interfaced surface of the block of cylinders.

Fig. 2.195. Putting sealant on a flange of an oil case


Apply sealant in a flute of a flange of an oil case (fig. 2.195).

NOTE
Thickness of the roller of sealant has to make about 4 mm.
The oil case has to be established not later than in 15 min. after putting sealant.

Establish an oil case and tighten bolts of its fastening the specified moment.
Moment of an inhaling of bolts of fastening of an oil case: 10–12 N · m.
Check of the sensor of a control lamp of pressure of oil

Fig. 2.196. Verification of an electric chain between a conclusion and the case of the sensor by means of an ohmmeter


Check an ohmmeter existence of an electric chain between a conclusion and the case of the sensor (fig. 2.196). In the presence of break of a chain replace the sensor.

Fig. 2.197. Verification of an electric chain between a conclusion and the case of the sensor when pressing a sensitive element of the sensor by means of an ohmmeter


Check existence of an electric chain between a conclusion and the case of the sensor when pressing a sensitive element of the sensor (fig. 2.197). If when pressing a sensitive element the chain is not disconnected, replace the sensor.
Create in the sensor depression of 50 kPa through an opening for an oil supply. If at the same time there is no electric chain between a conclusion and the case of the sensor, then the sensor is serviceable.
Be convinced of tightness of the sensor. Existence of leak indicates break of a diaphragm of the sensor. Replace the sensor with the damaged diaphragm.