Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and operation of the car



Toyota 4ranner
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engines
   - 3.1. 4-cylinder engines
      3.1.1. Specifications
      3.1.2. The types of repair which are carried out without removal of the engine from the car
      3.1.3. Installation of the piston of the 1st cylinder in compression step VMT
      3.1.4. Cover of a head of cylinders
      3.1.5. The soaking-up collector
      3.1.6. Final collector
      3.1.7. Cam-shafts and pushers
      3.1.8. Head of cylinders
      3.1.9. Cover of the chain drive of cam-shafts
      3.1.10. Forward epiploon of the crankshaft
      3.1.11. Oil pallet
      3.1.12. Oil pump
      3.1.13. Flywheel (leading disk of the hydrotransformer)
      3.1.14. Back epiploon of the crankshaft
      3.1.15. Engine mount details
   + 3.2. V6 3,0 engines of l (1993-1994) and 3,4 l (since 1995)
   + 3.3. Dismantle and capital repairs of the engine
+ 4. Systems of heating, ventilation
+ 5. Fuel and exhaust systems
+ 6. Transmissions
+ 7. Transmission elements
+ 8. Brake system
+ 9. Suspension bracket and steering
+ 10. Body
+ 11. Electric equipment
+ 12. Electroschemes










3.1.7. Cam-shafts and pushers

GENERAL INFORMATION

Details of a head of cylinders of engines 2,4 and 2,7 of l

1. Zolotnik of ventilation of a case
2. Cover
3, 15, 18. Laying
4. Sealing ring
5. Adjusting washer
6. Pusher
7. Crackers
8. Plate
9. Spring
10. Oil scraper cap
11. Basic washer
12. The directing plug
13. Candle
14. Valve
16. Cap
17. Natyazhitel
19. Cam-shaft drive gear wheel
20. Lock ring
21. Spring washer
22. Auxiliary gear wheel
23. Spring
24. Cam-shaft of final valves
25. Cover of a basic neck
26. Cam-shaft of inlet valves

Sequence of removal of covers of a cam-shaft

1. Cam-shaft of inlet valves

2. Cam-shaft of final valves

Order of an inhaling of bolts of covers of basic necks of a cam-shaft of inlet valves


Order of an inhaling of bolts of covers of basic necks of a cam-shaft of final valves


Prevention

Before performance of work prepare two bolts with a carving of 6х1 mm and 16-20 mm long which will be used when dismantling as auxiliary (see below).


Removal

PERFORMANCE ORDER
1. Uncover heads of cylinders (see subsection 3.1.4).
2. Install the piston of the 1st cylinder in compression step VMT. Be convinced that dot tags on the leader and conducted gear wheels of cam-shafts are combined and located on one line with the demountable plane of a head of cylinders and covers.
3. Otherwise check that with zero division of a scale it is combined risk of VMT of the crankshaft and turn the crankshaft on 1 turn.
4. Measure an axial side play of each of cam-shafts. For check of an axial side play displace a cam-shaft back, install the indicator on zero then displace a cam-shaft forward. If the side play exceeds maximum permissible, the cam-shaft and (or) a head of the block of cylinders are subject to replacement.
5. Remove the ignition distributor if it is provided (see subsection 11.5).
6. Turn off bolts of a natyazhitel of a chain (arrow).
7. Remove a natyazhitel of a chain.
8. Designate a chain link opposite to a dot tag.
9. Turn off an asterisk bolt, holding a cam-shaft a key. Remove a distributor drive gear wheel.
10. Carefully remove an asterisk and a chain from a cam-shaft and leave them on sending to a chain.
Cam-shaft of final valves
11. At first remove a cam-shaft of final valves, previously having recorded a spring of an auxiliary gear wheel.

Prevention

Remove cam-shafts one by one, keeping their parallelism of the plane of a head of cylinders. Otherwise breakage of a head of cylinders is possible.


12. For fixing of a spring turn a cam-shaft so that the technological opening under an auxiliary bolt was turned vertically up.
13. Attach an auxiliary gear wheel to the main gear wheel in advance prepared bolt with a carving of M6 and 15-20 mm long.
14. On engines till 1998 turn off a bolt and remove a distributor gear wheel.
15. Displace a cam-shaft back, gradually and evenly turn off bolts of a cover of necks of a cam-shaft of N1 (see rice. Sequence of removal of covers of a cam-shaft).
16. Carefully turn off bolts of other necks of a cam-shaft, watching uniformity of a raising of a cam-shaft. If the cam-shaft is released with a distortion, wrap bolts of a cover of N3 and, supporting a cam-shaft for a gear wheel, gradually release bolts.
Cam-shaft of inlet valves
17. Displace a cam-shaft forward, gradually and evenly turn off bolts of a cover of necks of a cam-shaft of N1 (see rice. Sequence of removal of covers of a cam-shaft).
18. Carefully turn off bolts of other necks of a cam-shaft, watching uniformity of a raising of a cam-shaft. If the cam-shaft is released with a distortion, wrap bolts of an average cover (N3) and, supporting a cam-shaft for a gear wheel, gradually release bolts.
19. Remove a cam-shaft of inlet valves.
20. Wipe adjusting washers of pushers from oil, put tags with a marker and remove pushers and adjusting washers.
21. Store covers of basic necks, pushers and washers in that order in which these details were established.

Check
PERFORMANCE ORDER
1. Clamp an inlet cam-shaft in a vice with soft sponges for a six-sided neck.
2. A key with two persistent pins turn an auxiliary gear wheel clockwise, then turn off the auxiliary bolt fixing the main and auxiliary gear wheel and carefully weaken effort, giving the chance to an auxiliary gear wheel to turn counterclockwise, before liberation of a spring.
3. Take a lock ring of an auxiliary gear wheel.
4. Remove a spring washer (1), an auxiliary gear wheel (2) and a spring of an auxiliary gear wheel (3).
5. Measure distance between the ends of a spring of an auxiliary gear wheel in a free state and compare to the standard. If the distance differs from standard, replace a spring.
6. Check a condition of pushers. Existence of chips and deep development is not allowed.
7. Check existence on basic necks and cams of a cam-shaft of wear tracks – grooves, poles, a navolakivaniye of metal and traces of an overheat (sites of bluish color, or the painted sites). Check existence on each cam of peeling of the tempered layer.
8. Measure the size of each cam of a cam-shaft and compare to the standard. If the size at least is less than one cam standard, replace a cam-shaft.
9. Measure diameter of basic necks of a cam-shaft and compare to the standard. If diameter at least is less than one basic neck standard, replace a cam-shaft.
10. Check gaps in basic necks for each cam-shaft, having arrived as follows.
11. Clear basic necks of a cam-shaft and cover of basic necks in solvent.
12. Carefully lay a cam-shaft(s) in a head of the block of cylinders without pushers, adjusting washers and an auxiliary gear wheel. Availability of oil on necks is not allowed.
13. Across each basic neck of a cam-shaft lay pieces of a plastic calibration wire.
14. Establish covers of basic necks of cam-shafts so that shooters were directed towards a gear belt.
15. Tighten bolts with the set moment turning each bolt on 1/4 turns at one time.

Prevention

Turn of a cam-shaft with the inserted plastic caliber is not allowed.


16. Turn off bolts and uncover.
17. Compare width of the crushed wire (in the widest place) to a scale on packing.
18. If the gap at least in one of necks exceeds norm, the cam-shaft and (or) a head of the block of cylinders are subject to replacement.
19. Scrape off a nail or a credit card the plastic remains, thus do not scratch a basic neck or an internal surface of a cover.
20. At temporarily established covers of basic necks check a gap in gearing of gear wheels of cam-shafts. Holding a key one of cam-shafts for a six-sided neck, check the size of movement of a gear wheel of other cam-shaft. Compare result to the standard. If the gap is higher than norm, replace both cam-shafts.

Installation

PERFORMANCE ORDER
Cam-shaft of inlet valves
1. Grease and establish pushers and adjusting washers on former places, previously having greased with molybdenic greasing.
2. The top bolts of fastening of a case of coupling to the block of cylinders.
3. Grease with molybdenic greasing basic necks and cams of a cam-shaft. Grease persistent part of a cam-shaft of inlet valves.
4. Establish a cam-shaft of inlet valves in a head of cylinders so that the adjusting pin (1) was turned up.
5. Displace a cam-shaft forward and establish covers of basic necks on former places, observing numbering and orientation of arrows which have to be directed towards a gear belt.
6. Tighten, observing sequence (see rice. An order of an inhaling of bolts of covers of basic necks of a cam-shaft of inlet valves), bolts of covers before contact with a head of cylinders. Finally do not tighten bolts.
7. Tighten all bolts with the set moment.
Cam-shaft of final valves
8. Collect a cam-shaft of final valves with springs and an auxiliary gear wheel, fix all details a lock ring.
9. Grease and establish pushers and adjusting washers on former places, previously having greased with molybdenic greasing.
10. Grease with molybdenic greasing basic necks and cams of a cam-shaft.
11. Combine tags (2) on gear wheels of cam-shafts. The adjusting pin (1) final cam-shaft has to be turned up.
12. It is necessary to consider that the design of gas distribution of the considered engine does not allow on traction connections. Bolts of covers should be tightened in this situation then the cam-shaft should be turned back to establish in the situation corresponding to VMT in which contact surfaces adjoin evenly, without obstacles from efforts of the springs operating on cams.
13. Turn a final cam-shaft on inlet and establish into place. Turn a cam-shaft in both parties to provide the correct landing in bearings.
14. Displace a cam-shaft forward and establish covers of basic necks on former places, observing numbering and orientation of arrows which have to be directed towards a gear belt.
15. Tighten, observing sequence, bolts of covers before contact with a head of cylinders (see rice. Order of an inhaling of bolts of covers of basic necks of a cam-shaft of final valves). Finally do not tighten bolts.
16. Tighten all bolts with the set moment in some stages.
17. Turn cam-shafts so that the auxiliary bolt appeared above and turn out a bolt. Be convinced of smoothness of rotation of cam-shafts.
18. Combine tags on gear wheels. Be convinced that risk of VMT of a pulley of the crankshaft it is combined with VMT.
19. Establish a chain with an asterisk, having checked coincidence of tags.
20. Dress a distributor gear wheel, tighten a bolt.
21. Take away a safety lock of a natyazhitel and move a plunger.
22. Record a plunger, having put on a hook.
23. Turn the crankshaft that the hook descended from a plunger pin.
24. If the plunger does not leave, press a boot of a natyazhitel and release a plunger hook.
25. Establish a natyazhitel, having replaced laying.

26. Further installation is carried out upside-down. If necessary adjust valves and the moment of ignition (see subsection 11.6).