Honda Accord

of release

Repair and operation of the car



Honda Chord
+ Cars of the Honda Accord brand
+ Settings and routine maintenance
- Engine
   - Four-cylinder engines
      Preparatory actions and the list of repair procedures which can be executed without extraction of the engine from the car
      Reduction of the piston of the first cylinder in the provision of the top dead point (TDP)
      Removal and installation of a cover of a head of cylinders
      The VTEC system - the general information and check of a condition of components
      Removal, check of a state and installation of assembly of yokes
      Replacement of maslootrazhatelny caps and valvate springs with plates
      Removal and installation of the inlet pipeline
      Removal and installation of a final collector
      Removal, check of a state and installation of cogwheels and belt of the drive of balancing shaft
      Removal, check of a state and installation of a gas-distributing belt and cogwheels of the GRM drive
      Replacement of a forward epiploon of a bent shaft
      Removal, check of a state and installation of the camshaft
      Removal and installation of a head of cylinders
      Removal and installation of the pallet of a case of the engine
      Removal, check of a state and installation of the oil pump
      Removal and installation of a flywheel / driving disk
      Replacement of a back epiploon of a bent shaft
      Check of a state and replacement of support of a suspension bracket of the power unit
      System of correction of a suspension bracket of the power unit - the general information and check of serviceability of functioning
   + V6 engines
   + General and capital repairs of the engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Engine management
+ Gear shifting box
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment





Removal, check of a state and installation of the camshaft

REMOVAL AND CHECK

 PERFORMANCE ORDER

1. Uncover a head of cylinders (see the Section Removal and installation of covers of heads of cylinders).
2. Bring the piston of the first cylinder into the provision of VMT (see the Section Reduction of the Piston of the First Cylinder in the provision of the top dead point (TDP)).
3. Remove the ignition distributor (see the Head Elektrooborudovaniye of the engine).
4. Take off a gas-distributing belt and a belt of the drive of balancing shaft (see the Sections Removal, check of a state and installation of assembly of yokes and Removal, check of a state and installation of camshafts).
5. In case of need turn out a bolt of fastening of a cogwheel of the camshaft for the purpose of removal it from a pin.

For the purpose of blocking of a shaft from a provorachivaniye pass the screw-driver through one of openings in a cogwheel.

6. Remove assembly of yokes (see the Section Removal and installation of final collectors). If covers of bearings of the camshaft are subject to removal from assembly, they need to be marked as installation (put down tags asymmetrically for a guarantee of correctness of an arrangement of covers at installation).

7. Check of an axial side play is made as follows:

a) Install the camshaft in the engine and fix it by covers of bearings (to assembly of yokes it is removed);
b) Fix the dial measuring instrument on a head of cylinders, having rested its plunger against a shaft end face;
c) Having used the big screw-driver as the lever, take away a shaft against the stop back and nullify the measuring instrument, then push a shaft forward and consider instrument reading;
d) Compare result of measurement to requirements of Specifications;
e) The excessive size of an axial side play speaks about wear of the camshaft, or a head of cylinders.

8. Remove the camshaft, dry wipe it with pure rags or a paper towel and transfer to a workbench.

9. For check of a side beating (performance of this check will be more correct to be charged to specialists of car service):

a) Lay the camshaft removed from the engine in two V-shaped prisms, then press a plunger of the dial measuring instrument to a neck of the central bearing and measure beating size at rotation of a shaft;
b) Compare results of measurement to requirements of Specifications;
c) At an excessive beating the camshaft is subject to replacement.
10. Check bearing gangs of the camshaft and internal surfaces of covers of bearings for existence of scratches and zadir. In case of detection of serious defects the head of cylinders is subject to replacement on new or restored. By means of the calibrated plastic wire (Plastigage set) measure the size of working gaps in each of bearings. Compare results of measurements to requirements of Specifications. If the gap of any of bearings exceeds the limit of admissible range, replace the camshaft and / илиголовку cylinders.

Instructions for use of the Plastigage set are provided in the Sections Installation of a Bent Shaft and Check of Working Gaps of Radical Bearings and Installation of Conrod and Piston Assemblies and Check of Size of Working Gaps in conrod bearings of a bent shaft.

11. Estimate degree of wear of cams of the camshaft:

a) Attentively examine the forming surfaces of working ledges of all cams, checking them for existence of scratches, zadir, cavities and signs of uneven wear;
b) In case of detection of defect of at least one of cams replace the camshaft. Do not forget about need of identification of causes of wear, - check motive oil for presence of abrasive particles at it. Check a condition of the oil pump and passability of all maslotok (wear of raising of cams is most often connected with pollution of oil or violation of its giving);
c) By means of a micrometer measure height of cams. Compare results of measurements to requirements of Specifications, in case of need replace the camshaft.

12. Check working surfaces of yokes of the drive of valves for existence of signs of wear, attritions, cavities and other defects.
13. In case of identification of any of the listed above defects it is necessary to check a condition of motive oil and serviceability of its giving in a head of cylinders. Only having established and having removed a cause of infringement, start installation of replaceable components (a head, the camshaft or assembly of yokes).

INSTALLATION

 PERFORMANCE ORDER

1. Carefully clear the camshaft, beds of its bearings in a head of cylinders and covers, and also yokes of the drive of valves. Try to remove completely the slightest traces of slime and dirt. For rubbing of components use only pure неворсящуюся rags.

2. Grease cams and bearing necks of the camshaft with special assembly lubricant.

If not carefully to grease a shaft before installation, it can lead to serious damages of bearings and cams in the first seconds after start of the engine prior to normal circulation of oil. Accurately lower the camshaft in a head of cylinders (its cogwheel have to in detail a tag of "UP" up.

3. Establish into place assembly of yokes (see the Section Removal, check of a state and installation of assembly of yokes).

On the VTEC models do not forget to clean a jet of a masloraspylitel.

4. Correct the provision of a cogwheel of the camshaft so that two of its side tags were combined with the top cut of a head of cylinders. Establish into place a gas-distributing belt and a belt of the drive of balancing shaft with the accompanying components (see the Sections Removal, check of a state and installation of cogwheels and a belt of the drive of balancing shaft and Removal, check of a state and installation of a gas-distributing belt and cogwheels of the GRM drive).
5. Further installation is made as it should be, the return to an order of dismantle of components.