Timing Belt Adjustment - LDE, LED, LFJ, LXV, 2H0, LUW, LFH
Special Tools
• | EN-45059 Torque Angle Sensor Kit |
For equivalent regional tool, refer to Special Tools .
Removal Procedure
- Remove the timing belt upper front cover. Refer to
Timing Belt Upper Front Cover Removal : LDE, LED, LFJ, LXV, 2H0, LUW, LFH .
- Set the crankshaft balancer in the direction of the engine rotation to "1st cylinder TDC" (mark 1).
- Remove the camshaft cover. Refer to Camshaft Cover Removal .
Note: The right half of the EN-6340 locking tool can be recognised by the lettering "right", arrow, on the tool.
- Prepare the right half of the EN-6340 locking tool.
4.1. | Remove the 2 bolts (2). |
4.2. | Remove the front panel (1) from the EN-6340 locking tool - right. |
Note:
• | The spot type marking (4) on the inlet camshaft position actuator adjuster does not correspond to the groove of the EN-6340 locking tool - left (1) during this process, but must be somewhat above. |
• | The spot type marking (3) on the exhaust camshaft position actuator adjuster must correspond to the groove on EN-6340 locking tool - right (2). |
- Insert the EN-6340 locking tool - left (1) and the EN-6340 locking tool - right (2) in the camshaft position actuator adjuster.
- Install the EN-6333 locking pin (1), apply tension to the timing belt tension roller (2) in the direction of the arrow. Install the EN-6333 locking pin (3).
- Mark timing belt in direction of rotation.
- Install the EN-652 flywheel holder (1), lock the flywheel (2) (or automatic transmission flex respectively) via the starter ring gear.
- Remove and DISCARD the crankshaft balancer bolt (1).
- Remove the crankshaft balancer (2).
- Remove the 4 timing belt lower front cover bolts (2).
- Remove the timing belt lower front cover (1).
- Remove the timing belt idler pulley bolt (1).
- Remove the timing belt idler pulley (2).
- Remove the tensioner bolt (1).
- Remove the timing belt tensioner (2).
- Remove the timing belt (1).
- Stop the timing belt tensioner (2).
- Remove the EN-652 flywheel holder to unlock the crankshaft.
- Turn the crankshaft 60° (A) against the direction of engine rotation.
- Remove the 2 camshaft position actuator adjuster closure bolts (1).
Note: A second technician is required.
- Loosen the camshaft position actuator adjuster bolts (2).
Hold at the appropriate camshaft hexagon.
- Remove and DISCARD the camshaft position actuator adjuster bolts (2) and the camshaft position actuator adjuster (3).
- Align the camshafts horizontally by the hexagon arrows, until the EN-6628-A locking tool can be inserted in both camshafts.
- Insert the EN-6628-A locking tool (1) into the camshafts.
Installation Procedure
Note: Do not tighten the camshaft adjuster bolts.
- Install the camshaft position actuator adjuster (3).
- Install NEW camshaft position actuator adjuster bolts (2).
Caution: Refer to Fastener Caution in the Preface section.
Caution: Refer to Torque-to-Yield Fastener Caution in the Preface section.
Note: A second technician is required.
- Tighten the camshaft position actuator adjuster bolts (2) in three passes:
Hold at the appropriate camshaft hexagon.
3.1. | First pass tighten to 65 N·m (48 lb ft). |
3.2. | Second pass to 120°. |
- Replace the camshaft position actuator adjuster seal rings.
- Install the 2 camshaft position actuator adjuster closure plugs (1) and tighten to 30 N·m (22 lb ft).
- Remove the EN-6628-A locking tool.
- Clean the timing belt tensioner thread.
- Install the timing belt tensioner (2) and tighten the NEW timing belt tensioner bolt (1) to 20 N·m (15 lb ft).
- Clean the timing belt idler pulley thread.
- Install the timing belt idler pulley (2) and tighten the NEW bolt (1) to 25 N·m (18 lb ft).
Note: The timing belt drive gear and oil pump housing must align.
- Turn the crankshaft in the direction of engine rotation, by the crankshaft balancer bolt, to cylinder 1 TDC of combustion stroke.
- Install the EN-652 flywheel holder (1), lock the flywheel (2) (or automatic transmission flex respectively) via the starter ring gear.
Note: Observe direction of rotation.
- Insert the timing belt (1).
- Apply preliminary tension clockwise to the timing belt tension roller.
- Remove the EN-6333 locking pin .
- Release the tension on the timing belt tensioner.
- Install the lower front timing belt cover (1) and tighten the 4 bolts (2) to 6 N·m (53 lb in).
- Install the crankshaft balancer (2) and NEW bolt (1) and tighten in 3 passes using the EN-45059 sensor kit :
18.1. | First pass to 95 N·m (70 lb ft) |
18.2. | Second pass to 45°. |
- Remove the EN-652 flywheel holder to unlock the crankshaft.
- Remove the EN-6340 locking tool.
- Check position of the camshaft position actuator adjuster.
21.1. | Turn crankshaft 720° in the direction of engine rotation by the crankshaft balancer bolt. |
| Note: Note marking, camshaft position actuator adjuster. |
21.2. | Insert EN-6340 locking tool into camshaft timing gears. |
- Insert the EN-6628-A locking tool (1) into the camshafts.
- Align camshafts by hexagon until EN-6628-A locking tool can be inserted in both camshafts.
- Check the crankshaft position.
- Marking on crankshaft balancer must align with marking on timing belt lower cover, see mark (1).
- Remove the EN-6628-A locking tool.
- Install the camshaft cover. Refer to Camshaft Cover Installation .
- Install the timing belt upper front cover. Refer to
Timing Belt Upper Front Cover Installation : LDE, LED, LFJ, LXV, 2H0, LUW, LFH .
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© Copyright Chevrolet. All rights reserved |