Perkins — To Change Engine Timing Belt

Maintenance

From a Perkins service manual — check it applies to your exact model before use.

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Procedure

1. Disconnect the battery cables; open engine cover and side door.
2. Remove the engine spark plugs.
3. Line up timing pointer on timing belt cover with the O mark on crank damper.
4. Loosen the engine alternator and remove the V-belt.
5. Remove the small top timing belt cover (three M6 hex screws).
6. Remove the crankshaft damper pulley and belt guide.
7. Remove the large timing belt cover (five hex screws).
8. Loosen the tensioner adjustment screw to release belt tension; then re-tighten.
9. Remove the old timing belt.
10. Align camshaft sprocket timing mark with the timing pointer.
11. Install new timing belt over crankshaft sprocket then counterclockwise over auxiliary and camshaft sprockets.
12. Loosen tensioner adjustment bolt to move against the belt.
13. Rotate crankshaft two complete turns; recheck timing marks.
14. Reinstall belt guide, damper, covers, spark plugs, V-belt; reconnect battery and check timing (10 degrees BTDC at idle).

Source: Perkins service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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