The Torque settings below are suitable for Perkins Phaser 4 cylinder engines with the following engine number prefixes.
AA, AB, AC, AD, AE, AF, AG, AH (SB.364)
Check the head bolts for distortion using a straight edge along the screw if any reduction in the diameter of the thread is found they must be replaced. Please pay close attention to the bolt lengths, mark on the head of the bolts for short medium and long, stage 2 of torquing is by degree of angle. Check our online store to order replacement bolts.
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Technical details. | Metric | Imperial |
Head Bolt Torque | ||
Stage 1. All bolts. | 110 NM | 81 lbs/ft |
Stage 2. Short Bolt | ||
Stage 2. Medium Bolt | ||
Stage 2. Long Bolt | ||
Main Bearing Bolts | 250 NM | 184 lbs/ft |
Conrod Nuts | 125 NM | 92 lbs/ft |
Conrod Bolts | 155 NM | 114 lbs/ft |
Flywheel | 105 NM | 77 lbs/ft |
Torque Sequence
Valve Clearances | Metric | Imperial |
Inlet | 0.20 mm | 0.008 in |
Exhaust | 0.45 mm | 0.018 in |