Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and operation of the car

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

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).

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