Perkins — To check and to adjust valve tip clearances (six cylinder engines)
Adjustments · Valve train
From a Perkins service manual — check it applies to your exact model before use.
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Procedure
- Rotate crankshaft until inlet valve of number 6 cylinder just opened and exhaust valve not closed completely
- Check/adjust number 1 cylinder valves
- Set number 2 valves; check/adjust number 5
- Set number 4 valves; check/adjust number 3
- Set number 1 valves; check/adjust number 6
- Set number 5 valves; check/adjust number 2
- Set number 3 valves; check/adjust number 4
Tools required
- Feeler gauges Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Inlet 0,20 mm
- Exhaust 0,45 mm
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.