HydraMaster Boxxer 423s, Owner'S Manual

Page: 36 / 92

5-13: Machine Maintenance Machine Maintenance: 5-12
Extracting Seals
With manifold removed from crankcase:
1. Insert proper extractor collet through main seal retainer (see Figure 5-11).
2. Tighten collet and extract retainers and seals.
The Teflon seals of the HT series will be damaged during disassembly so new
ones with have to be installed.
Figure 5-11. Extract Retainers and Seals
Replacing the Seal Assemblies
Only one seal kit is necessary to repair all the seals in the pump (see Figure 5-12). Use
an insertion tool for seal installation
To install a seal assembly:
1.
Apply a film of O-ring grease on the O-ring on the outside of the new high pressure seal.
2. Insert the high pressure seal into the cavity with the “U” shape down.
3. Press high pressure seal into place.
4.
Apply a film of grease on the O-ring on the brass retainer (see
Figure 5-13).
Figure 5-13. Install Seal Assembly Using O-Ring Grease
Figure 5-12. Seal Kit and Insertion Tool for Seal Installation