Open the Flush Control before refitting the valve cover.
For servicing instructions, see the Jabsco Manual Toilet Technical Data Sheets (pages 6 & 7) at:
2. Servicing - Seal replacement
begins to leak around the piston rod (key 29) at the top of the pump, the seal assembly (key 18) is worn and must be replaced.
YOU WILL need:
■ A Seal housing Assembly 29044-2000.
▼ Unscrew the seal housing assembly (key 18) using a 24mm (15/16") spanner and remove the entire piston rod assembly from the toilet.
▼ Wrap some tape around the piston rod within 16mm (5/8") of the handle. Grip the piston rod through the tape, unscrew the handle and remove the bumper washer (key 25). Remove the tape.
▼ Slide the old seal assembly off the piston rod. Wrap one turn of tape around the thread at the top of the piston rod to protect the new seal and slide the new seal assembly onto the piston rod. Remove the tape from the thread.
▼ Wrap some tape around the piston rod within 16mm (5/8") of the handle. Grip the piston rod through the tape and replace the bumper washer and handle. Remove the tape from the piston rod.
▼ Slide the whole assembly back into the pump cylinder and tighten in place.
CAUTION: Gripping the piston rod with a tool anywhere except on the 16mm (5/8") below the handle damages the surface in a way that causes rapid seal failure.
4. Servicing - Overhaul
YOU WILL need:
■ A Service
Kit, part number 29045-2000, which contains all wearing parts
- refer to the PARTS
LIST for details. Remove the pump assembly as follows:
▼ Loosen hose clips; disconnect the inlet hose and the flushing water
hose (key 4) from the top of the pump.
▼ Remove the 2 screws (key 31) that secure the discharge flange (key 32) that holds the discharge elbow
(key 34) and hose to the pump cylinder (key 28).
▼ Do NOT remove the hose from the discharge elbow
▼ Remove the 4 screws (key 31) that secure the pump cylinder to the base.
off the pump assembly and pick up the base valve gasket (key 16) and the joker valve (key 33).
Dismantle the pump assembly as follows:
▼ Remove the 6 screws (key 26) that secure the valve cover (key 27).
▼ Open ( ) the Flush Control (key 23) before lifting off the valve cover assembly and picking up the top valve gasket (key 21) and the valve seat (key 19).
▼ Remove the handle and the seal assembly by following the SERVICING INSTRUCTIONS for SEAL REPLACEMENT.
▼ Withdraw the piston assembly (key 29) and prise off the piston O-ring (key 30).
▼ Do NOT remove the bowl from the base
▼ Clean and disinfect all parts - refer to OPERATING INSTRUCTIONS for CLEANING
. Remove scale from the cylinder bore.
▼ Inspect the top and bottom valve gaskets (key 21) and the joker valve, and renew them if they are damaged, stiff or covered with scale. Automatically renew the seal assembly and the piston O-ring. Use the other parts in the kit as necessary.
Reassemble the pump as follows:
▼ Push on the new O-ring and lubricate with petroleum jelly (vaseline).
▼ Following the SERVICING INSTRUCTIONS for SEAL REPLACEMENT fit the new seal assembly, the piston assembly and the handle.
▼ Lubricate pump cylinder bore with petroleum jelly (Vaseline).
▼ Locate the valve seat on top of the cylinder, locate the top valve gasket on its pegs on top of the cylinder and Open ( ) the Flush Control before refitting the valve cover.
▼ Locate the joker valve in the discharge elbow.
▼ Secure the discharge elbow and hose to the cylinder, using the discharge flange, BEFORE you refit
the pump assembly to the base, so that the joint is not under leverage from the discharge hose. If you do not, the joint may not seal.
▼ Locate the bottom valve gasket on its pegs on the base
▼ Secure the pump assembly to the base whilst relieving any leverage from the discharge hose. If you do not, the joint may not seal.
▼ Examine all hoses throughout their length for chafe, kinks and splits under hose clips. Check all hose clips for corrosion
and replace worn or damaged parts.
▼ Reconnect all loose hose ends and secure them with their hose clips.
▼ Ensure that the base drain plug
(key 8) is securely in place.
CAUTION: Do NOT lubricate top or bottom valve gaskets. Do NOT apply sealing compounds to any gaskets or hose connections.