0+ (Unillustrated Parts)  
1+ Air delivery pipe  
2+ Air delivery pipe  
3+ Sleeve  
4+ Nut  
5+ Air tube  
6+ Air tube  
7+ Sleeve  
8+ Nut  
9+ Check valve  
10+ Sealing washer  
11+ Air hose  
12+ Hose clip  
13+ Moulded air hose  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.