# Assembling the Powerhead

1. Lubricate the lip seal with Aqua-Sil and insert into the housing [1].

2. Lubricate the O-ring and lip seal with Aqua-Sil and install on the piston [2].

3. Lubricate the O-ring with Aqua-Sil and install on the end cap [3].

4. Apply a smear of hydraulic oil to the bore of the housing.

5. Insert the piston into the housing and push it to the bottom of the housing bore.

6. Apply Loctite 277 to the threads on the piston rod end and screw it into the piston rod.

7. Clamp the piston rod end in a vice and torque the piston rod using a socket and extension bar.

   Model | Installation Torque (Nm) | Socket Size
   --- | --- | ---
   TFX02 | 12 | 9/16 in.
   TFX04 | 40 | 19 mm
   TFX08 | 45 | 24 mm
   TFX14 | 80 | 1-1/8 in.
   TFX18 | 90 | 1-1/8 in.
   TFX30 | 100 | 38 mm

8. Insert the endcap into the housing.

9. Apply Loctite 243 to the end cap screws; screw them into the housing and tighten to the correct installation torque.

   Model | Hex Key (mm) | Torque (Nm)
   --- | --- | ---
   TFX02 | 4 | 11
   TFX04 | 5 | 18
   TFX08 | 6 | 40
   TFX14 | 8 | 70
   TFX18 | 8 | 80
   TFX30 | 10 | 125

10. Install the swivel manifold. See section Assembling the Swivel Manifold.

11. Degrease the threads on the fixed pin and apply Loctite 243 to the female thread. Screw the 2 parts of the fixed pin together and tighten to the correct installation torque.

    Model | Hex Key (mm) | Torque (mm)
    --- | --- | ---
    TFX02 | 4 | 11
    TFX04 | 5 | 18
    TFX08 | 6 | 18
    TFX14 | 6 | 18
    TFX18 | 6 | 18
    TFX30 | 6 | 18

Seal lubrication and installation; steps 1–3
Piston rod installation; steps 4–7
Fixed pin installation; step 11
Relevant Information

- Assembling the Swivel Manifold

## Applies to: