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Repair the Air Valve
Air Valve Repair Kit 245066 is available. Parts
included in the kit are marked, for example (33†).
For the best results, use all parts in the kit.
Disassembly
1. Prepare the pump for repair, page 15.
2. Remove the air valve sheet metal cover (36) and felt
dampener (34).
3. Unscrew the cylinder screws (21).
4. Remove the valve cover (20) with the flat gasket
(19†).
5. Use two screwdrivers to lift out the air valve plate
(16†) and replace o-rings (17† ◆ ) and (18† ◆ ).
6. Remove the air valve cup (15†).
7. Remove one retaining clip (14) with pliers DIN
5256C nominal size 12-25 diameter.
8. Screw cylinder screw (21) into the plug (12) and pull
it out. Replace o-ring (13† ◆ ).
9. Repeat steps 8 and 9 for clip and plug on opposite
side.
10. Reach into the housing and press out the carriage
(10).
11. Replace o-rings (11† ◆ ).
18
Reassembly
Lubricate all o-rings when reassembling the
pump.
1. Assemble in reverse order.
Orient the new flat gasket (19) on the air valve
plate (16) so that the channels in the plate are
completely covered
The hole in the air valve plate (16) aligns with the
arrow on the housing.
Align
2. Replace all parts with the new ones supplied in kit
245066
Four profile seals (29) are provided in kit 245066
as in all 308HP kits. These seals need to be
replaced only if the fluid covers are removed.
Repair
309479A
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