Enerpac DuroTech Series, Service Information

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3.0 REPAIR PROCEDURES
3.1 Pump Disassembly
1. Fully relieve pressure in the pneumatic and hydraulic
circuits. Disconnect hoses. Refer to maintenance
preparation procedures in Section 8.1 of instruction sheet
L4184.
2. Remove cover assembly (Figure 1, Item 4) from pump
assembly. Refer to procedure in Section 6.3 of instruction
sheet L4184.
3. Using a 3/4" [19 mm] box end wrench, disconnect the
pipe-elbow connector (Figure 1, Item 1) from manifold
assembly (Figure 1, Item 8).
4. Using a 3/4" [19 mm] box end wrench, disconnect the
pipe-elbow connector (Figure 1, Item 3) from piston rod
assembly (Figure 1, Item 7).
5. Remove elbow pipe from tank and manifold assemblies
(Figure 1, Items 6 and 8).
6. Using a 3/4" [19 mm] box end wrench, disconnect connector
(Figure 1, Item 2) from tank assembly (Figure 1, Item 6).
7. Repeat steps 3 through 6 for opposite side.
8. Remove four screws (Figure 1, Item 5) from bottom of tank
assembly (Figure 1, Item 6).
9. Remove pump element subassembly (Figure 1, Item 7)
from manifold and tank assemblies (Figure 1, Items 6 and
8).
3.2 Pump Element Disassembly
1. Place pump element subassembly in a non-marring vise.
2. Remove four tie-rods (Figure 2, Item 2) from piston rod
assembly (Figure 2, Item 1).
3. Using a soft mallet, separate the end caps (Figure 3, Item
1) from cylinder tube (Figure 3, Item 2).
4. Using a soft mallet, drive piston rod (Figure 3, Item 3) out
of the cylinder tube (Figure 3, Item 2).
1
2
3
4
6
8
7
5
Figure 1, Pump Element Subassembly
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1
Figure 2, Tie Rod Removal (View 1 of 2)
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3
1
Figure 3, Tie Rod Removal (View 2 of 2)