Jetta III L4-1.9L DSL Turbo (AAZ) (1993)
- Rotate crankshaft in direction of engine rotation (clockwise) until TDC marking on flywheel is aligned with reference mark on clutch housing.
- Read plunger stroke on dial indicator.
Specifications:
- Checking: 0.73 - 0.87 mm stroke
- Adjusting: 0.80 ± 0.02 mm stroke
CAUTION: Do not adjust the injection pump if the measurement fails within the tolerance range specified for "Checking".
- To adjust, slacken the three bolts on injection pump bracket and mounting bolt for rear support.
- Adjust until dial indicator reading matches specified setting by turning injection pump with adjusting lever 3210.
Specification:
- Adjusting: 0.80 ± 0.02 mm stroke
- Tighten mounting bolts.
- Tightening torque: 25 Nm (18 ft lb)
Valve timing, checking
- Remove cylinder head cover.
- Check camshaft drive belt tension.
- Set engine to TDC for Cyl. 1 cylinder -arrow-.
- Setting bar 2065A must fit into slot in camshaft.
If not:
- Rotate camshaft until setting bar can be installed.
Center setting bar as follows:
- Turn camshaft, with setting bar in place, until one end of setting bar touches cylinder head.
- Measure gap at other end of setting bar with feeler gauge.
- Select feeler gauge that is one-half of measured gap, and temporarily install between setting bar and cylinder head.
- Turn camshaft so that setting bar is resting against feeler gauge, then insert second feeler gauge of same thickness at other end between setting bar
and cylinder head.
Adjust valve timing as follows:
- Loosen camshaft sprocket bolt one-half turn. Detach camshaft sprocket from tapered end of camshaft by tapping with hammer (using drift through
hole in rear belt guard).