Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation



Nissan Patrol and Ford Maverik
+ Cars of the Nissan Patrol and Ford Maverick series
+ Diagnostics of malfunctions
+ Settings and routine maintenance
+ Engine
+ Systems of cooling, heating and air conditioning
- Power supply system and production of the fulfilled gases
   - Power supply system of carburetor engines (3.0 l and early 4.2 l)
      Removal and installation of an air purifier and pyleotdelitel of preliminary cleaning
      Removal and installation of the fuel filter
      Carburetor service
      Service of the fuel pump
      Service of the electromagnetic valve of return of fuel - only models of 3.0 l
      Service of a cable of a drive of a butterfly valve
      Service of a cable of a manual drive of a butterfly valve
      Service of a fuel tank
   + Systems of injection of fuel (EFI) and engine management - models of 4.2 l of release after 1992.
   + System of production of the fulfilled gases
+ Systems of decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Transmission
+ Coupling
+ Brake system
+ Forward and back bridges, running gear and steering
+ Body
+ Onboard electric equipment

uk cc


Carburetor service

Removal and installation

Removal

 PERFORMANCE ORDER

  1. Disconnect a negative wire from the battery.
  2. Remove air purifier assembly from the carburetor.
  3. Disconnect from the carburetor a hose of supply of fuel and закупорьте it in order to avoid hit in a dirt power supply system.
  1. Mark and disconnect from the carburetor vacuum hoses (on an accompanying illustration the air purifier is raised for display of vacuum connections (the engine of 4.2 l)).
  1. Disunite electric sockets of the carburetor.
  2. The driving lever transfer a butterfly valve to completely open situation and, using the formed weak point of a driving cable, disconnect the last from the butterfly valve lever.
  3. Give nuts of fastening of the carburetor on the inlet pipeline, remove washers. Remove the carburetor with laying. Laying will throw out.
  4. On models of 3.0 l disunite the electric socket and remove a heater.
  5. To Zakuporta an entrance opening of the inlet pipeline pure неворсящейся rags in order to avoid hit in the engine of extraneous subjects.

Installation

Installation is made upside-down.

 PERFORMANCE ORDER

  1. Surely establish new laying between the carburetor and the inlet pipeline. In case of need previously carefully remove from interfaced surfaces traces old, watching that the garbage did not fall in the inlet pipeline.
  2. Check the carburetor on existence of signs of leakages of fuel and depression losses. After warming up of the engine adjust idling turns.

Dismantling

Appearance of the carburetor of the engine of 4.2 l with display of an arrangement of various components (a side view and the top view - the model carburetor with RKPP)

1 — air ventilation
2 — a tube of an admission of fuel
3 — control unit assembly by quality of a mix during a deseleratsiya (BCDD)
4 — a lateral cover
1 — - the lever of a drive of the accelerating pump
2 — - primary diffuzor
3 — - a secondary diffuzor
4 — - the device of automatic equipment of start
5 — - the electric socket
6 — - the executive mechanism of inclusion of fast idling
7 — - a priotkryvatel of an air zaslonka of automatic equipment of start

At performance of major maintenance of the carburetor it is necessary to pay attention to the next moments:

  1. All components should be washed carefully out in suitable solvent and are checked on existence of signs of wear and damages;

Do not immerse in solvent electromagnetic assemblies and components with vacuum diaphragms

  1. Try to put all components removed from the carburetor separately and with a binding to their situation in assembly;
  2. For pro-cleaning of various jets, throttles and channels use only the compressed air. By no means blocking should not be eliminated by means of a wire or other sort of probes!
  3. At performance of major maintenance of the carburetor use special prokladochny remnabor and without fail replace all removed diaphragms and sealing rings. Replace also all worn-out components.
  4. In order to avoid damage of jets and heads of screws use at their removal/installation of a screw-driver and wrenches of only a suitable standard size.

 PERFORMANCE ORDER

  1. Remove the carburetor from the car.
  2. Disconnect returnable springs of butterfly valves from the lever of a drive of the accelerating pump.
  3. Remove an E-shaped clip and a washer of fastening of the lever of a drive of the accelerating pump to the top cover of the carburetor (the main components of the carburetor are presented on an accompanying illustration).
1 — the top cover
2 — the main case
3 — laying
4 — the case of throttles
  1. Remove an E-shaped clip of a cam of fast idling, then, holding a cam, disconnect a returnable spring.
  2. Release a clamp of each of wires in the electric socket of the carburetor. Try to remember the provision of wires in the socket.
  3. Disconnect a returnable spring of a priotkryvatel of an air zaslonka of automatic equipment of start from automatic equipment assembly.
  4. Give fixing screws and partially separate the top cover from the main case of the carburetor. Disconnect the lever of a drive of an air zaslonka from an axis of turn of the last.
  5. Remove the top cover with laying from the main case of the carburetor.
  6. Remove from the main case a spring of the accelerating pump.
  7. If that is established, remove the reduktsionny tube of a plastic flowmeter located over a jet of idling II.
  8. Overturn the main case upside down and take an E-shaped clip and draft of a drive of a diaphragm of a butterfly valve of II.
  9. Give fixing screws in the lower part of the case of throttles. Remember location of the hollow screw.
  10. Remove the main case with laying from the case of throttles. Remove from the case an insulator.
  11. Now the carburetor will appear is disassembled on three main knots - the top cover, the main case and the case of throttles.
  12. Service of knots of the top cover of the carburetor
  13. Remove a lock plate of a hollow bolt of an admission of fuel.
  14. Turn out a hollow bolt, lift the receiver an admission of fuel, a washer and the filter. Check a filter condition, in case of need clean it, or replace.
  15. Remove plunzherny assembly of the accelerating pump. Check a plunzher on existence of signs of wear and damages. In case of need replace a plunzher.
  16. In case of the corresponding complete set give fixing screws and remove from the top cover plastic ventilating assembly with laying.
  17. By means of dinnogubets take from the top cover an axial finger of a float, then remove a float, the needle valve.
  18. By means of a screw-driver take from the top cover a saddle of the needle valve with a washer.
  19. Remove a spring clip of fastening of a needle on a float. Check components of the needle valve on existence of signs of wear, replace the defective.
  20. Check the top cover on existence of cracks and other damages. Make sure that the air zaslonka of automatic equipment of start moves freely, without breakthroughs and jamming points.
  21. On models of 3.0 l make sure that the bimetallic plate of the device of pauperization of a mix idling at the heated-up engine is not broken and otherwise is not damaged.
  22. Assembly make upside-down.

Service of knots of the top cover of the carburetor

 PERFORMANCE ORDER

  1. Remove a lock plate of a hollow bolt of an admission of fuel (components of the top cover of the carburetor are shown on an accompanying illustration).
1 — ventilating assembly
2 — washers
3 — a lock plate
4 — the top cover
5 — a tube
6 — the filter
7 — a hollow bolt
  1. Turn out a hollow bolt, lift the receiver an admission of fuel, a washer and the filter. Check a filter condition, in case of need clean it, or replace.
  2. Remove plunzherny assembly of the accelerating pump. Check a plunzher on existence of signs of wear and damages. In case of need replace a plunzher.
  3. In case of the corresponding complete set give fixing screws and remove from the top cover plastic ventilating assembly with laying.
  4. By means of dinnogubets take from the top cover an axial finger of a float, then remove a float, the needle valve.
1 — the top cover
2 — a washer
3 — a saddle of the needle valve
4 — a float
5 — a needle
6 — an axial finger
  1. By means of a screw-driver take from the top cover a saddle of the needle valve with a washer.
  2. Remove a spring clip of fastening of a needle on a float. Check components of the needle valve on existence of signs of wear, replace the defective.
  3. Check the top cover on existence of cracks and other damages. Make sure that the air zaslonka of automatic equipment of start moves freely, without breakthroughs and jamming points.
  4. On models of 3.0 l make sure that the bimetallic plate of the device of pauperization of a mix idling at the heated-up engine is not broken and otherwise is not damaged.
  5. Assembly make upside-down.

Service of knots of the main case

 PERFORMANCE ORDER

  1. Remove from the main case the electromagnetic locking valve with a washer. By means of the battery tension 12 In check serviceability of functioning of the valve, having pressed it the case to the negative plug of the battery, and a wire having connected to the positive. Plunzher of the valve thus should be involved. In case of need replace the valve.
  2. At the corresponding complete set remove the electromagnetic valve of quality management of a mix during a deseleratsiya (BCDD) with a washer from BCDD assembly.
1 — the main case
2 — screws of fastening of assembly of BCDD
3 — an electromagnet
  1. Give fixing screws and remove BCDD assembly from the main case of the carburetor.
1 — the main case
2 — laying
3 — BCDD assembly
4 — screws
  1. Give fixing screws and remove from the main case a lateral cover of the fuel chamber, laying, a cap plate (or viewing glass) and a sealant (see an accompanying illustration).
1 — the main case
2 — a sealant
3 — a cover
4 — a plate
5 — laying
6 — screws
  1. At the corresponding complete set give fixing screws and remove a damper of fast idling.
  2. Give fixing screws and remove assembly of a butterfly valve by II from the main case.
  3. Remove a spring clip from a well of a plunzher of the accelerating pump. Overturn the main case upside down and take the mesh screen and a ball (see an accompanying illustration).
1 — a plunzher
2 — the main case
3 — a clip
4 — the mesh screen
5 — a ball
  1. Remove a stopper of fixing digit грузика the accelerating pump, overturn the main case and take грузик, a spring and a ball (see an accompanying illustration).
1 — an air jet of idling of II
2 — a fuel jet of idling of II
3 — a cap
4 — a stopper
5 — a spring
6 — грузик
7 — a ball
8 — the screw
9 — an air jet of idling of I
10 — a fuel jet of idling of I
  1. Remove the main air jets. Give fixing screws and remove from the main case sprays. The removed components are shown on an accompanying illustration.
1 — the main air jets with emulsion tubes
2 — screws
3 — a spray
4 — laying
5 — the main case
  1. Take from the main case the remained jets.
1 — a jet of an ekonomayzer
2 — the main fuel jet of I
3 — the main fuel jet of II
4 — the main case

It is important, that at assembly jets were established correctly. Otherwise inevitably there will be problems with engine functioning. In case of need address to dimensional characteristics of jets (see size tables and adjustments at the end of the Management).

  1. Carefully wash out each jet in suitable solvent, then blow it the compressed air.

In order to avoid drawing of damages at all do not undertake attempts to clean jets by means of a wire or thin drills.

  1. Carefully wash out solvent the main case of the carburetor and dry it the compressed air.
  2. By means of the manual vacuum pump check serviceability of a diaphragm of a butterfly valve of II. Replace defective components.

Service of knots of the case of throttles

In view of the admissions accepted by manufacturers probability of the correct reproduction of landing of axes of butterfly valves in the case of throttles it is insignificant it is small. For this reason in case of damage of axes it is necessary to replace the case of throttles assembled.


 PERFORMANCE ORDER

  1. On models from AT give fixing bolts and remove from the case of throttles the butterfly valve sensor switch.
  2. Wash out the case of throttles in suitable solvent and dry it the compressed air.
  3. Check drafts of a drive of butterfly valves on lack of signs of jamming, in case of need grease a drive.
  4. On models from AT establish on the place on the case of throttles the butterfly valve sensor switch, then execute its adjustment.

Carburetor assembly

Assembly to be made as it should be, the return to a dismantle order.

 PERFORMANCE ORDER

  1. Using new laying, connect the case of throttles to the main case of the carburetor. Reliably tighten fixing bolts. Track that the hollow screw was screwed on the former place in the throttle case (see an accompanying illustration).
1 — the hollow screw
2 — butterfly valves
  1. Establish a diaphragm of a butterfly valve of II and fix it an E-shaped clip.
  2. Establish about the well plunzherny assembly of the accelerating pump. Without fail replace laying of the top cover of the carburetor.
  3. Establish the top cover on the main case and connect the lever of a drive of an air zaslonka to a rotary axis of the last. Strongly tighten fixing screws.
  4. Establish a cam of fast idling with a spring, put on an axis an E-shaped clip.
  5. Establish the axial plug of the lever of a drive of the accelerating pump and connect the lever to an axis. Put on an axis an E-shaped clip and connect returnable springs of butterfly valves.
  6. Connect a returnable spring of a butterfly valve of II to assembly of automatic equipment of start.
  7. Connect wires to the electric socket of the carburetor, - everyone on the former place.
  8. Establish the carburetor on the inlet pipeline.
  9. In case of need adjust turns of idling and turns of fast idling.

Checks and adjustments

Adjustment of installation of level of fuel in the poplavkovy

On some models the carburetor is equipped with a special observation port. If fuel level in an observation port before removal and dismantling of the carburetor was in norm, and replacement of a needle and a saddle of the needle valve in the course of performance of procedures of service was not made, additional adjustment it is not required.


 PERFORMANCE ORDER

  1. Remove from the carburetor the top cover with laying.
  2. Overturn the top cover so that the uvula of a saddle of a float rested against the needle valve.
  1. Measure distance And (see an accompanying illustration) from float top to a prokladochny surface of the top cover of the carburetor. On models of 4.2 l it should equal 9.5 ÷ 10.5 mm, on models of 3.0 l - 5.0 ÷ 6.0 mm.
  1. In case of need adjustment performance accurately turn in a uvula of a saddle of a float, achieving demanded value. Track, that the needle valve smoothly crawled over a float uvula.
  2. Overturn the top cover in normal situation, having allowed a lock uvula of a float to make contact with an emphasis.
  1. Measure distance In (see an accompanying illustration) from a prokladochny surface of the top cover of the carburetor to a float bottom. On models of 4.2 l the result should make 47.5 ÷ 48.5 mm, on models of 3.0 l - 44.0 ÷ 45.0 mm.
  1. For adjustment performance accurately turn in a lock uvula.
  2. Establish the top cover on the carburetor, start the engine and check it on existence of losses of depression and leakages of fuel.

Adjustment of turns of fast idling without removal of the carburetor from the engine

 PERFORMANCE ORDER

  1. Start the engine and warm up it to normal working temperature. According to instructions of manufacturers connect a tachometer and make installation of turns and quality of a mix of idling. Muffle the engine.
  1. Open a butterfly valve and establish the adjusting screw on the second step of a cam of fast idling (see an accompanying illustration - on an insert the screw established on the second step of a cam) is shown.
  1. Without touching a gas pedal, start the engine and compare tachometer indications to standard requirements (see size tables and adjustments at the end of the Management).
  2. In case of need performance of adjustment weaken a lock-nut of the adjusting screw of fast idling and, rotating the screw, achieve the demanded indication.

Adjustment of turns of fast idling on the carburetor removed from the engine

 PERFORMANCE ORDER

  1. Open a butterfly valve and establish the adjusting screw on the second step of a cam of fast idling.
  1. Measure a gap And (see an accompanying illustration) between a butterfly valve I and an internal wall of the carburetor. Compare result of measurement to data of size tables and adjustments.
  1. For performance of adjustment weaken a lock-nut of the adjusting screw of fast idling and, rotating the screw, achieve the demanded indication.

Adjustment of a vacuum drive of a priotkryvaniye of an air zaslonka

 PERFORMANCE ORDER

  1. Make sure that at the cold engine the air zaslonka is completely closed.
  2. Create depression on a priotkryvatel of an air zaslonka and slightly push a piston rod towards a diaphragm of a priotkryvatel.
  3. Measure a gap between edge of an air zaslonka and an internal wall of the primary chamber. Compare result to requirements of size tables and adjustments.
  4. For adjustment performance slightly turn in draft on an axis.

Adjustment of a damper of a butterfly valve

 PERFORMANCE ORDER

  1. Start the engine and warm up it to normal working temperature. Connect a tachometer and expose turns quality of a mix of idling.
  2. Open a butterfly valve and check engine turns at contact of a damper to the adjusting screw. Compare result of measurements to requirements of size tables and adjustments.
  3. In case of need performance of adjustments turn the adjusting screw on the end of an axis of a zaslonka in the demanded direction and repeat verification of the previous paragraph.
  4. Make sure that turns smoothly fall from 2 000 to 1 000 in a minute approximately in three seconds.

Adjustment of turns of idling at the switched-on conditioner of air

 PERFORMANCE ORDER

  1. Start the engine and warm up it to normal working temperature. Connect a tachometer and expose turns quality of a mix of idling.
  2. Turn on the conditioner of air and check idling turns. Compare result to data of size tables and adjustments.
  3. For adjustment performance on models from AT and 3.0 l turn in the corresponding direction the adjusting screw at a damper end face. On models of 4.2 l from RKPP adjustment is carried out by screw rotation on the end of an axis of a butterfly valve.

Adjustment of turns and quality of a mix of idling

Procedure is in detail described in Head of Control and routine maintenance.

Check of serviceability of functioning of automatic equipment of start

 PERFORMANCE ORDER

  1. On the cold engine completely open a butterfly valve and make sure that the air zaslonka is closed. Track, that adjusting labels on a cover of starting automatic equipment and the case of the carburetor were combined.

If the air zaslonka is not closed, check its axis on existence of signs of jamming.

  1. Start the engine and warm up it to normal working temperature. Make sure that the air zaslonka completely opened.
  2. If the zaslonka opened not up to the end, connect a lamp sampler between a wire on the case of a food of automatic equipment of start and the next reliably earthed point. If the current is not present (a lamp does not burn), check a condition of the relay and electroconducting of automatic equipment of start.

Check of serviceability of functioning of the electromagnetic locking valve

 PERFORMANCE ORDER

  1. Disunite the electric socket of the carburetor.
  2. Submit tension from the battery on the plugs shown on an accompanying illustration (at). During the giving and shutdown of a food click of operation of the valve should be clearly audible.
1 — 4,2 l of RKPP
2 — 3,0 l
3 — 4,2 l of AT
  1. Otherwise replace the valve.

Adjustment of the sensor switch of a butterfly valve (only models with AT)

 PERFORMANCE ORDER

  1. Check correctness of installation of turns of idling on the heated-up engine to normal working temperature. Muffle the engine.
  2. Disconnect electroconducting from the sensor switch of a butterfly valve and the sensor of provision of a butterfly valve.
  3. Start the engine and check idling turns in the position "N" of the lever of the selector.
  1. Check conductivity existence between plugs A and B (see an accompanying illustration).
  1. Make sure, contacts of the sensor switch are disconnected at excess of single turns on size 250 ± 150 of rpm in the provision of transmission of "N".
  2. If there is a need for adjustment, weaken bolts of fastening of the sensor switch and rotation of the last achieve disconnection of contacts at the right time (at the stipulated turns).
  3. Tighten bolts of fastening of the sensor switch and check correctness of adjustment.
  4. Connect electroconducting to the sensor switch of a butterfly valve and the sensor of provision of a zaslonka.







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