Lexus RX 300
+ Lexus RX-300 cars
+ Governing bodies and methods of operation
+ Settings and routine maintenance of the car
- Engine
General information and preparatory operations
Check of compression pressure
Check of the engine by means of the vacuum gage
Reduction of the piston of the first cylinder in the provision of the top dead point (TDP)
Check of a corner of an advancing of ignition
Removal, check and installation of a belt of the GRM drive of its natyazhitel, pulley and cogwheel of a bent shaft, cogwheels of camshafts and intermediate rollers
Removal, dismantling, check, assembly and installation of a head of cylinders and its components
Removal and installation of the engine, check of support
Block of cylinders
Check of D/V of pressure of motive oil
Removal, dismantling, check, assembly and installation of the oil pump and pallet of a case
+ Cooling systems of the engine, heating, ventilation and air conditioning
+ A power supply system and production of the fulfilled gases
+ Systems of electric equipment of the engine
+ Automatic transmission and interaxal differential
+ Transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schematic diagrams of electric connections
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Removal, check and installation of a belt of the GRM drive of its natyazhitel, pulley and cogwheel of a bent shaft, cogwheels of camshafts and intermediate rollers Removal
The components which are subject to removal for access to the GRM drive
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- Remove a fairing of a windshield and the top strut of a motive compartment (9) (see the Head Kuzov).
- Remove a forward right wheel and the protection cover of a wing (1).
- Take off a belt of the drive of the generator and a belt of the drive of the pump GUR (2 and 3) (see the Section Check of a State and Replacement of Belts of the Drive of Auxiliary Units).
- Remove the activator of a tempostat (4).
- Separate sockets of grounding (6).
- Remove draft and the right arm No. 2 of fastening of the engine (7 and 8).
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Turn out a hinged bolt and a nut then remove an arm of fastening of the generator.
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Holding a pulley of a bent shaft from a provorachivaniye by means of special adaptation, turn out the central bolt of fastening of a pulley and remove it
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The GRM drive and the accompanying components
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- Turn out 4 bolts and uncover No. 1 of a belt of the GRM (6) drive.
- Remove a guide of a belt of the GRM (5) drive.
- Wring out engine electrical wiring plait protector clamps from a GRM drive belt cover No. 3, turn out 5 bolts and uncover GRM drive belt No. 2.
- Turn out 2 bolts and remove the right basic arm of the engine.
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Bring the piston of the first cylinder into the provision of VMT. For this purpose temporarily screw a bolt of fastening of a pulley of a bent shaft and, turning for it a shaft clockwise, combine an opening on a shaft cogwheel with dredging on the case of the oil pump.
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Make sure that VMT of the end of a step of compression – a tag on cogwheels of camshafts is reached and on a cover No. 3 of a belt of the GRM drive have to coincide. If it did not occur turn a bent shaft on one whole revolution.
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- Turn out a bolt of fastening of a pulley of a bent shaft.
- If the belt of the GRM drive is supposed to be reused, before its removal it is necessary to make sure that 3 adjusting tags and a forward tag are applied on it. If these tags are erased, put them anew.
The scheme of laying and tag on a GRM drive belt
- Serially turn out two bolts of fastening of a natyazhitel of a belt of the GRM drive and remove it together with a boot (16 and 18).
- Take off a belt from cogwheels.
- Holding cogwheels of camshafts from a provorachivaniye by means of special devices, turn out the central bolts of their fastening and remove cogwheels (11 and 13).
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Remember an arrangement of cogwheels or mark them that then to establish each cogwheel on the corresponding shaft. |
- Turn out a bolt of fastening of the top intermediate roller (12) and remove it.
- Turn out a bolt of fastening of the lower intermediate roller and remove it together with a dish-shaped washer (14 and 15).
- Remove the holding plate of a cogwheel of a bent shaft (19) and by means of special adaptation remove a cogwheel, trying not to damage a gear wreath of a rotor of CKP located in a back part of a cogwheel.
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Check
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Do not allow bending and twisting, a GRM drive belt, and also hit on it of oil, OZh and fuel. Do not use a natyazhitel of a belt for fixing cranked or the camshaft from a provorachivaniye when tightening bolts of fastening of cogwheels. Do not allow a provorachivaniye of shaft at the taken-off GRM drive belt more than by several degrees for combination of teeths. |
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Check a condition of the GRM belt which is taken off from the engine. Full or partial loss of teeths can lead to jamming of camshafts.
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- At identification of cracks or signs of noticeable wear of the outer side of a belt check working surfaces of intermediate rollers and a roller of the water pump for existence of zadir and agnails.
- If unilateral wear of a belt takes place, check a condition of the directing plate and track correctness of combination of cogwheels and intermediate rollers.
- Replacement of a belt has to be made according to the Schedule of routine maintenance of the car (see the Head Nastroyki and routine maintenance of the car). The belt which is in a doubtful state is subject to replacement without fail. Before installation of a new belt try to reveal and liquidate all reasons which led to premature failure of old.
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It is recommended to make replacement of a belt of the GRM drive every time after its removal. |
- Shoot intermediate videos and manually check ease and smoothness of rotation of their bearings. Make sure of lack of an excessive side play. If necessary replace rollers.
- Visually check consolidation of rollers and a natyazhitel for existence of leak of oil. If necessary replace rollers or a natyazhitel.
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Consolidations of an intermediate roller
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Consolidations of a natyazhitel
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Existence of a thin trace of oil on an internal edge of consolidation is allowed. |
- Holding a natyazhitel both hands in horizontal position, rest a pusher against a firm surface and press on a natyazhitel – the pusher should not move. If the pusher utaplivatsya, replace a natyazhitel.
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You do not hold a natyazhitel a press pusher down. |
- Measure pusher ledge size from the case of a natyazhitel of a belt of the GRM drive. If the received value does not lie in the range of 10.0 ÷ 10.8 mm, replace a natyazhitel.
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Installation
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- Clear the surface GRM drive arrangements which are in the area of dirt and oil. Wipe with acetone cogwheels and do not soil them in installation time.
- Having correctly developed a cogwheel concerning a spline, put it on a pin of a bent shaft CKP rotor to the engine. Try not to damage a gear wreath of a rotor of CKP. Make sure of correctness of combination of tags of VMT on a wheel and the case of the oil pump, then establish the holding plate of a cogwheel and tighten a bolt of its fastening with effort of 8 Nanometers.
- Establish intermediate rollers and tighten bolts of their fastening with the required efforts.
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At installation of an intermediate roller grease a carving part of a bolt of its fastening with the fixing Loctite 242 sealant, and also do not forget to establish a dish-shaped washer. After installation of intermediate rollers check smoothness of their rotation. |
- Having correctly developed cogwheels concerning splines, put them on pins of camshafts according to the tags put at removal. Tighten bolts of fastening of cogwheels of camshafts with the required efforts, holding pulleys from a provorachivaniye by means of special adaptation.
- Make sure that cogwheels cranked and camshafts are in the provisions corresponding to VMT of the piston of the first cylinder at the end of a compression step.
- Establish a GRM drive belt so that tags on it coincided with reciprocal tags.
- Drown a pusher in the case of a natyazhitel with a force of 981 ÷ of 9807 N (100 ÷ 1000 kgfs) and record it in this situation, having passed, for example, a prutkovy six-sided key of 1.27 mm through openings in the case of a natyazhitel and in a pusher. Establish a boot of a natyazhitel.
- Establish a natyazhitel and tighten bolts of his fastening at first by hand, and then it is consecutive, with effort of 27 Nanometers. Take out a prutkovy key, having released a pusher.
- Turn a bent shaft on two whole revolutions and make sure that the piston of the first cylinder is in the end of a step of compression.
- Establish the right basic arm of the engine and tighten a bolt of its fastening with effort of 28 Nanometers.
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Examine laying of a cover No. 2 of a belt of the GRM drive. If integrity of laying is broken, replace it, previously having removed all traces of old laying and having cleared a cover surface. Remove a protective film or paper from new laying, establish laying exactly on the cover contour designated and strongly press laying to a cover. Make sure that laying stuck to a cover.
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- Establish a cover No. 2 of a belt of the GRM drive and tighten 5 bolts of its fastening with effort of 8.5 Nanometers.
- Establish an engine electrical wiring plait protector on a GRM drive belt cover No. 3.
- Establish a GRM drive belt guide by the cup-shaped party outside.
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Examine laying of a cover No. 1 of a belt of the GRM drive. If integrity of laying is broken, replace it similar to laying of a cover No. 2.
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In places of joining of laying there should not be a gap. |
- Establish a cover No. 1 of a belt of the GRM drive and tighten 5 bolts of its fastening with effort of 8.5 Nanometers.
- Having correctly developed a pulley of a bent shaft concerning a spline, put him on a shaft pin. Holding a bent shaft from a provorachivaniye by means of special adaptation, tighten a bolt of fastening of a pulley with effort of 215 Nanometers.
- Establish an arm No. 2 of fastening of the generator and tighten a nut of its fastening with effort of 28 Nanometers. Tighten a bolt after installation of a belt of the drive of the generator.
- Establish in the return sequence of a part which description of removal is given above.
- Make a trial trip during which make sure of lack of unusual noise, pushes and delays. Make sure also of correctness of gear shifting and smoothness of the course of the car.
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