Toyota Land Cruiser 100/Amazon, Lexus LX 470

since 1997 release

Repair and operation of the car

Removal and installation of camshafts and pushers of valves

Before starting procedure performance, prepare two bolts 6 * 10 mm 16 - 20 mm long.

Components of the valvate mechanism

1 — the Cover of the right head of cylinders
2 — the Cover of the left head of cylinders
3 — the Sealing ring of the directing tube of a candle niche
4 — Sealing laying
5 — the Oil pipeline
6 — the Right final camshaft
7 — a camshaft bearing Cover
8 — the Left inlet camshaft
9 — a camshaft gear wheel Spring
10 — the Right inlet camshaft
11 — the Lock ring
12 — the Wavy washer
13 — the Sprung gear ring
14 — a camshaft Epiploon
15 — an engine Eye

16 — the Left final camshaft
17 — the Right head of cylinders with a final collector
18 — Laying of the right head
19 — Laying of the left head
20 — the Left head of cylinders with a final collector
21 — the Arm of fastening of conducting of the engine
22 — a camshaft case Stopper
23 — Segment traffic jams
24 — the Spark plug
25 — Conducting of the engine
26 — I Will corrode a lambda probe (the sensor 1, the block 2)
27 — I Will corrode a lambda probe (the sensor 1, the block 1)
28 — the Sealing ring
29 — the Probe of measurement of level of motive oil
30 — Bolts of a head of cylinders

Removal

PERFORMANCE ORDER

1. Uncover heads of cylinders (see the Section Reduction of the Piston of the First Cylinder in the provision of the top dead point (TDP)) and a gas-distributing belt (see the Section Removal, check of a state and installation of a gas-distributing belt and cogwheels of the GRM drive) (address to an illustration above).
2. Bring the piston of the first cylinder into the provision VMT of the end of a step of compression.

3. The procedure described below is applicable to all four camshafts. In both heads first of all the final shaft (after blocking of the sprung gear ring with a gear wheel), then final is always removed. At first remove camshafts of the right head of cylinders. Check an arrangement of an adjusting tag on a pulley of a cranked shaft on one line with its bolt and an intermediate roller (address to an accompanying illustration).

External shaft in both heads are final, internal – inlet.

4. Combine service openings, developing Rozhkov a key a camshaft for its six-sided part. Block the sprung gear ring on the conducted gear wheel by means of a service bolt, the bolt is passed throughout an opening in a ring and rolled in a reception carving opening in a gear wheel (address to paragraph 3 illustration).

In view of the fact that the axial side play of camshafts is minimum, try to hold constantly at extraction assemblies in horizontal situation, the slightest distortion can lead to emergence of cracks in a head around an arrangement of gear wheels. Before taking a shaft, make sure that the effort developed by the torsion spring is completely compensated by means of a service bolt.

5. Establish a tag on a camshaft gear wheel approximately in 10 ° (address to paragraph 3 illustration). Working strictly in a certain order (address to an accompanying illustration), in stages (on 1/4 turns for approach) weaken bolts of fastening of covers of bearings of camshafts so that there was a possibility of a reversing of bolts manually.

For fastening of covers bolts of the different sizes are used – do not mix them at installation.

6. Remove an oil pipeline, covers of bearings and it is careful, trying not to warp, take camshafts from a head of cylinders.

7. Working in a similar manner, take camshafts from the second head of cylinders taking into account that dot tags on camshafts should be combined (address to an accompanying illustration).

8. Put the components removed from the engine strictly in the organized manner guaranteeing possibility of their installation at assembly on the former places.

At this stage adjusting washers of pushers of valves which at assembly also have to be established strictly on the former places can be taken by means of a magnet.

9. For dismantle of assembly of a gear wheel clamp a final camshaft for lysk in a vice with soft sponges.

10. By means of a bayonet key develop a gear ring clockwise so that to remove the effort developed by a spring from a service bolt (address to an accompanying illustration), then turn out the last, having released a ring.

In the absence of near at hand bayonet key pass throughout a free opening in a cogwheel the second service bolt, and, using it as a support, develop a wheel by means of a screw-driver.

11. By means of special flat-nose pliers remove the lock ring fixing assembly of a gear wheel (address to an accompanying illustration).

12. Remove a wavy washer, a gear ring and the torsion spring from a shaft pin (address to an accompanying illustration). Track that the components removed from the left shaft developed separately from components with right.

Check

PERFORMANCE ORDER

1. Visually estimate a condition of working surfaces of cams and bearing necks of shaft. Pay attention to scratches, cavities, overheat traces, etc. the special attention should be paid to a condition of a layer of superficial training of cams. By means of a micrometer measure height of cams.
2. Measure by a micrometer diameters of each of bearing necks of both camshafts. Perform measurement in several points carried as on neck length (regarding detection of conicity) and on forming each section (regarding detection of ovality). Write down the received results. Measure the internal diameter of bearings of a camshaft by a nutromer and write down results of measurements. Calculate a gap, subtracting value of diameter of a neck from value of diameter of its bearing.
3. Establish a camshaft on prisms and measure a beating of an average neck by means of the dial measuring instrument. Compare results of checks to requirements of Specifications, in case of need replace a worn-out shaft.

Installation

PERFORMANCE ORDER

1. Mount assembly of a gear wheel of a final shaft, having established into place the torsion spring, a gear ring and a wavy washer. Record assembly by a lock ring, having tracked reliability of landing of the last.
2. Clamp assembly of a shaft in a vice with soft sponges.
3. Pass a service bolt throughout a smooth opening in a gear ring, by means of a screw-driver develop a ring clockwise so that there was a combination of openings, and screw the second bolt in a gear wheel, having strongly pulled together with it assembly. Take the first service bolt from a ring. Similarly block assembly of a gear wheel of the second shaft.
4. Remove old sealant from segment traffic jams. Apply sealant in flutes of traffic jams and establish them in heads of cylinders. At first establish the right camshafts.
5. Grease pushers with molibdensoderzhashchy greasing and put them strictly on the former places in heads of cylinders. Track that each of pushers was completed with the former adjusting washer.
6. Grease cams, bearing necks and persistent surfaces of a gear wheel of a shaft with molibdensoderzhashchy greasing

7. Lay shaft on the regular places. Turning a camshaft Rozhkov a key, establish a dot tag of a shaft at an angle about 10 ° over a horizontal. Remove old sealant from a forward cover of the bearing and apply a strip about 1.5 mm wide of fresh FIPG sealant on the specified places (address to an accompanying illustration). Do not allow hit of sealant in cover flutes.

8. Establish a cover before sealant stiffens. Installation of a forward cover defines a persistent gap of a camshaft.

9. Establish other covers strictly on the former places (according to digital marking), track that strelochny tags were developed by edges towards the GRM drive (address to an accompanying illustration).

10. Establish a new epiploon of a camshaft.
11. Grease carving parts of bolts of D and E. Working in strictly certain order (address to paragraph 9 illustration), in stages (on 1/4 turns for approach) tighten in some approaches bolts of fastening of covers with the demanded effort.
12. Turn out a service bolt.

13. Working in a similar manner, establish camshafts of the left head of cylinders taking into account that dot tags on camshafts should be combined (address to an accompanying illustration): installation of forward covers of bearings.

13. Installation of other covers of bearings (address to an accompanying illustration).

14. Check valvate gaps (see the Head Nastroyki and routine maintenance of the car)
15. Establish a gas-distributing belt (see the Section Removal, check of a state and installation of a gas-distributing belt and cogwheels of the GRM drive).
16. Before installation of covers of heads of cylinders remove from them and from segment traffic jams old sealant. Apply on a place of a joint of a valvate cover with a camshaft bearing No. 1 cover new sealant. Apply sealant in the central flute of segment traffic jams and establish them in a head of cylinders. Establish new laying of covers of heads of cylinders, check a condition of sealants under bolts of fastening of covers and establish covers of heads of cylinders.
17. Further installation is made as it should be, the return to an order of dismantle of components.
18. Start the engine and check it for existence of signs of development of leaks.