Operation 11-8 To Fit Atomisers Retained By A Gland Nut - Perkins 900 Series Workshop Manual

900 Series
To fit atomisers retained by a gland nut
Special requirements
Consumable products
Description
POWERPART atomiser thread sealant
1 Thoroughly clean the threads of the gland nut (A3) and the cylinder head.
Caution: Do not allow any thread sealant to get below the gland nut threads.
2 Ensure that the wire clip (A4) is in position. Put a 2 mm (0.08 in) bead of POWERPART atomiser thread
sealant onto the first two threads of the gland nut. The bead should extend approximately 6 mm (0.24 in)
around each of the threads. Ensure that the sealant does not contact the body of the atomiser.
Caution: Remove and discard the original seat washer (A6). If the original seat washer remains in the recess
for the atomiser, the nozzle protrusion will be incorrect when a new seat washer is added.
3 Put the new seat washer (A6) into the seat recess in the cylinder head.
4 Put the atomiser in position, ensure that the location ball (A7) is fitted in the groove (A5) correctly. Carefully
engage the threads of the gland nut (A3) with the threads in the cylinder head.
Caution: Do not move the thread after it has been tightened, or the seal that is made when torque has been
applied will be broken.
5 Tighten the nut gradually and evenly to 30 Nm (23 lbf ft) 3,0 kgf m. As the nut is tightened the atomiser will
rotate clockwise as the ball moves in the slot, this is acceptable. Remove any excess thread sealant.
Caution: Do not tighten the union nuts of the high-pressure pipes more than the recommended torque tension.
If there is a leakage from the union nut, ensure that the pipe is correctly aligned with the atomiser inlet. Do not
tighten the atomiser union nut more, as this can cause a restriction at the end of the pipe. This can affect the
fuel delivery.
6 Remove the plastic cap (A1) and fit the high-pressure fuel pipe and tighten the union nuts to 27 Nm (20 lbf ft)
2,8 kgf m. If necessary, fit the pipe clamps.
7 Renew the sealing washers and fit the leak-off pipe to the leak off connection (A2). Tighten the banjo bolt to
9,5 Nm (7,0 lbf ft) 1,0 kgf m.
8 Operate the engine and check for leakage of fuel and air.
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6
5
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Workshop Manual, TPD 1345E, issue 3
This document has been printed from SPI². Not for Resale
Part number
21820117 or
21820118
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C0011
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Operation 11-8
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