Toyota Land Cruiser 100/Amazon, Lexus LX 470

since 1997 of release

Repair and car operation

Removal and installation of heads of cylinders

Before starting to work, wait final cooling of the engine.

Removal

PERFORMANCE ORDER

1. Disconnect a negative wire from the battery.

If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that have the correct combination for audiosystem input in action!

2. Empty cooling system, including the engine block (see. Head of Control and routine maintenance of the car).
3. Remove the delivery chamber of an air path, fuel highways and injectors (see. Head of the Power supply system and production of the fulfilled gases).
4. Remove final collectors (see. Section Removal and installation of final collectors).
5. Remove the generator (see. Head engine Electric equipment).
6. Remove the inlet pipeline (see. Section Removal and installation of the inlet pipeline).
7. Remove a belt of a drive of GRM, cogwheels and the top intermediate roller (see. Section Removal, check of a condition and installation of a gas-distributing belt and cogwheels of a drive of GRM). Remove the SMR sensor.
8. Remove top (No. 3) a cover of a drive of GRM.
9. Take from the corresponding head camshafts (see. Section Replacement of a forward epiploon (ов) cranked shaft / camshafts).

10. Operating in strictly certain order (address to an accompanying illustration), in stages (on 1/4 turns for an approach) weaken 10 bolts of fastening of one head of cylinders so that there was a possibility of their reversing manually. Then perform the same operation on other head. Remove 20 bolts together with washers, trying not to drop them.

11. Remove heads of cylinders together with final collectors from directing plugs of the block of the engine and lay them on wooden whetstones on a workbench. In case of need обстучите it for office a hammer through wooden whetstone or hook a head the lever in the specified place (address to paragraph 10 illustration).

At all do not hook the "become attached" head the lever under an interfaced surface!

Installation

PERFORMANCE ORDER

1. Carefully smooth out interfaced surfaces. Having scratched out the remains of a material build laying and coal deposits, wipe surfaces the rags moistened in acetone. Existence on interfaced surfaces of traces of oil at the moment of installation of a head can lead to violation of tightness of landing of laying and, as a result, development of leaks. Processing the block, закупорьте openings of cylinders rags in order to avoid hit in them small garbage and various extraneous subjects (as a last resort, carefully vacuum cylinders).

2. Check interfaced surfaces of heads and the block on existence of deep scratches, задиров and other damages. Any defects are eliminated with a pro-point way, do not try to restore a surface by means of a file or an emery paper. By means of a steel ruler and a set flat щупов check not planeness a surface of a head of cylinders (address to an accompanying illustration).

3. A tap of the suitable size banish carving openings under bolts of fastening of heads. Having finished pro-race, blow openings the compressed air.

At work with reaped air do not forget to put on goggles!

For the purpose of carving pro-cleaning from corrosion and restoration of the damaged rounds clamp fixing bolts for heads in a vice with soft sponges, banish them a lerka of the corresponding size.
4. Lay new sealing laying, putting on them directing pins in the block. In a back part of laying there are labels for their identification: 2UL (left) or 2UR (right).

Stack laying by marking up, do not mix laying of a forward head with laying back.

5. Measure diameter of bolts of fastening of a head of cylinders at distance of 75-85 mm from their head and compare it to requirements of Specifications. If necessary use new bolts. Grease a carving and the bottom surfaces of heads of fixing bolts with pure impellent oil. Put on washer bolts.
6. Screw bolts on the former places and tighten them by hand. Operating strictly as it should be, the return shown on an illustration to paragraph 10 (Removal), tighten bolts of fastening of a head of cylinders with demanded effort in three stages: at first with effort of 32 Nanometers, then tighten all bolts on 90 °, and in summary – for 90 °.
7. Installation of the remained components is made as it should be, the return to an order of their dismantle.
8. Fill system of cooling and replace the oil filter (see. Head of Control and routine maintenance of the car).
9. Start the engine and check it on existence of signs of development of leaks (see. Head of Control and routine maintenance of the car).