Removing the primary head and replacing its seals
September 26, 2013, 715004208 Rev. A
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17. Holding the assembly together, use the T27 TORX driver, fully tighten
the two head bolts until screw bottoms out then unscrew 1/4-turn.
To reattach the primary head:
1. Flip the assembly over, and then lubricate the seals with methanol.
2. Carefully insert the sapphire plunger shaft into the pump head until the
plunger shaft is no longer visible, ensuring the shaft does not contact the
support plate.
Head bolt (2)
Seals