- 14 -
3. Fit
‘
O
’
rings, lightly coated with a lithium no. 2 grease to the injector
and into the recesses in the top face of the cylinder.
4. Fit
‘
O
’
rings to the oscillator assembly (69) (section 10.7.1
PAV20/20.04.01 Oscillator Assembly).
5. Locate oscillator assembly on top of injector. Fit spring (19) and
spring plunger (17) into top of cylinder.
6. Discard all
‘
O
’
rings and seals from the starter spool assembly (70)
(see section 10.7.2 PAV20/20.04.02 starter spool assembly).
7. Insert the thrust rod/spool assembly into the head and through the
bottom gland.
8. Apply lithium no. 2 grease to the
‘
O
’
rings (81), which fit to the
bottom gland and insert gland into bottom of head.
9. Grease and fit new seals to the top gland of the starter spool. Press
the top gland of the starter spool assembly into position. Attention:
before pressing, please assemble O ring (82) & seal (80), and apply
lithium no. 2 grease
10. Carefully place the head over the oscillator assembly ensuring the
starter spool thrust rod enters the recess in the spring cap in the
cylinder and push down.
11. Insert the two M12 holding down bolts (71). Screw in until slack is
taken up and then tighten each a quarter turn at a time to close gap
between head and cylinder. Continue to tighten bolts each a quarter
turn at a time with a torque wrench until tightened to a torque of
95Nm (74lb ft).
12. Apply Loctite 542 or equivalent to the centre grub screw (66) and
fit it to the head. Tighten to 13.5Nm (10lb ft). Fit bonded seal (67)
acorn nut (65).
9.5 Fitting Accumulator (refer to section 10.9 PAV20/20.07
Accumulator Assembly)
1. Apply a light coating of lithium no. 2 grease to
‘
O
’
ring (103).
2. Fit
‘
O
’
ring to accumulator thread. It is advisable to protect the
threads with masking tape or similar in order not to damage the
‘
O
’
ring.
3. Apply Loctite 542 or equivalent to the accumulator threads.
4. Screw in the accumulator and tighten using a
‘
C
’
spanner.
5. Use a soft-faced hammer to finally tighten the
‘
C
’
spanner.
6. Apply Loctite542 or equivalent to the grub screw (64) (
section
10.7 PAV20/20.04 Head Assembly
) that locks the accumulator.
Screw in and tighten onto the accumulator body.
9.6 Refitting Handle (refer to section 10.6 PAV20/20.02 Handle
