Wheatheart S2000 Post Pounder - Manual (Page 49)

W HEATHEART - P OST P OUNDER 7. M AINTENANCE
S2000 M ODEL 7.3. R EPLACING THE M AST S EAL
IM15 R1 49
7.3. REPLACING THE MAST SEAL
The mast seal kit consists of the following (see Figure 7.1):
• a large O-ring (1)
• a small O-ring (2)
• a buffer (3)
• a polypak (4)
• a dust seal (5)
Figure 7.1 S2000 Mast Seal Kit
Note: Ensure that O-rings are not twisted when placed into the cylinder mast cap.
Twisted O-rings will result in a faulty seal and may cause leaks.
1. Place the large O-ring (1) through the bottom (threaded side) of the mast
cylinder cap (6) into the first groove above the threads.
2. Through the bottom of the mast cylinder cap (6), install the small O-ring (2)
and the buffer (3) into the next recession above the large O-ring (1).
Important: Ensure that the lip on the buffer faces the pressure side (down).
3. Install the polypak (2) into the second groove from the top (wrench side) of
the mast cylinder cap (4). Ensure that the side of the polypak (2) with the o-
ring embedded into it faces the pressure side (down).
4. Insert the dust seal (5) into the top recession with tapered side facing up.