Geely JL481Q, Руководство пользователя

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V. Positioning and Installation of Valve Train
1. The installation of intake camshaft relative to the exhaust camshaft (shown as Fig. Assembly of cylinder head, Section
2, Chapter 3).
2. Installing belt tensioner tension spring
Install belt tensioner by bolts without tightening the bolts. After the tension spring is installed, push the pulley towards the
left as much as possible and then tighten the bolts (Fig. 203).
3. Installation of the exhaust camshaft relative to the crankshaft
Finding the position of TDC: to install crankshaft timing pulley, align the “V” mark on the pulley with the mark “ ” on the oil
pump body (Fig. 204)
Finding compression TDC position: align the dowel pin of camshaft with the dowel pin groove near the “K” mark of the
pulley before pushing in the timing pulley (Fig. 141). Use a spanner to fasten the hexagon head of camshaft and fasten the
retaining bolt with the torque of: 59N.m. Rotate the hexagon head of camshaft, so that the small hole near the “K” mark on
camshaft timing belt is aligned with the “U” mark on the No.1 bearing cap. (Fig. 205)
4. Installing timing belt
2. Tensioner
To check whether the belt tension pulley runs smoothly and flexibly. When necessary, replace it. Measure the free length
of tension spring. Free length: 36.9mm. Measure the tension of the spring with the specified length. The installing tension
(Length: 43.6mm): 34-38N. If the tension is not up to the standard, you need to replace the tension spring.
3. Timing gear
Check the tooth clearance. Check whether the tooth surface has point-corrosion and hard spots, etc.
Common Troubles:
If the timing belt breaks away too early, you should check whether it is properly installed and whether the deflection of belt
is proper. If the belt tooth is fractured or damaged, you need to check whether the camshaft or water pump is blocked. If
the belt is worn or damaged only on one side, you need to check the belt guide wheel and the positioning of all belt pulleys.
If the surface of the belt is apparently and abnormally worn or cracked, you should check whether the pin on tension pulley
is cracked on one side.
Fig. 203 Installing belt tensioner Fig. 204 Alignment of TDC mark
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