
Instruction Manual
Page 30 of 40
Issue: 2.1
N:\Engineering\Manuals\Pump Unit E2-30 & 40 R2.1.doc
Maintenance – Section 6.1 - Assembly Procedure
Fluid Section Assembly [2] - Shaft / Bellows Assembly (192679)
1. Screw 502382 assembly
spigot onto the piston shaft
(103).
2. Push seal (106) and bellows
spacer (105) over the piston
shaft.
3. Using tool 502377 push the
bellows (104) over the
assembly spigot until the
bellows internal spigot
locates into the shaft groove.
(Using the tool prevents damage to the convolutions)
4. Smear a film of loctite 572 over the nose of the bellows then thread the nut (107)
onto the bellows using tool 502377 to push against the nut ensuring the thread
starts squarely. Grip the bellows and tighten the nut with a 1” A/F spanner until
the nut contacts the bellows shoulder. Remove 502382 assembly spigot.
Fluid Section Assembly [2] – Piston Assembly
1. Insert spring (96) and spring keep (95) into piston
2. Place the ball (100) against spring keep.
3. Fit the ‘O’ ring (102) and inlet seat (99) into piston (97).
4. Fit piston keep plate (98) and assemble with 5 off M6x30 caphead screws (101)
use Loctite 222 on the threads. Tighten Evenly to 12Nm.
E2-30 Piston Assembly 192678
E2-40 Piston Assembly 192754