Mechanical Camshaft Belt Tensioner - Adjusting
Section2
Group
21
No.
0015
Year
99
Month
06
S70/V70/C70
1998-
Vehicles involved: B52X2/B52X4
Adjusting the mechanical camshaft belt tensioner
Background:
This Service Bulletin describes the adjustment of the mechanical camshaft belt tensioner.
Engine serial no.:
S70/V70/C70 1266128-
Adjusting the mechanical camshaft belt tensioner
Adjusting the mechanical belt tensioner
1
Adjusting the camshaft belt tensioner and camshaft belt
1 Install timing belt.
2 Ensure that belt is tight between crankshaft and intake pulley, if not reinstall.
3 Tighten the center screw to 5 Nm (4 ft.lb).
4 Holding the center screw stationary, turn the eccentric (A) with a 6 mm allen wrench COUNTER-clockwise until the tension indicator passes the right side of the adjustment window (B).
5 Turn the eccentric (A) back CLOCKWISE until the indicator (C) reaches the correct position based on the temperature of the engine (see illustration).
6 Hold the eccentric secure and tighten the center screw to 20 Nm (15 ft.lb).
Note!
When setting the final adjustment the needle (C) must enter the adjustment window (B) from the right. If the needle exits the window to the left, it must be readjusted past the window so that it enters from the right.
7 Press on the timing belt and verify that the indicator moves in response to the pressure.
8 Note!
If the bolts holding either cam wheel had been loosened, tighten them at this time to 20 Nm (15 ft.lb).
9 Press the camshaft belt and check that the belt tensioner needle moves freely.
2
Needle position at different temperatures
This adjustment is always carried out on a cold engine.
A suitable temperature is approximately 20°C/68°F.
At higher temperatures, for example with engine at operating temperature or at higher ambient temperature, the indicator is further to the right.
The illustration shows the needle position when adjusting the camshaft belt tensioner at different engine temperatures.