9C ENGINE
SUMP AND DIPPER ROD
 1..Sump-oil................................2A 704.....1..W.S.E. use 12G 173
 1..Sump-oil................................12G 173....1
 2..PIug-drain..............................88G 257....1..Part No. change; was
  ......................................................2F 4249 and 2A 380
 3..Washer..................................6K 638.....1 

GASKET-SUMP TO CRANKCASE
 4..Right-hand..............................2A 711.....1
 4..Right-hand..............................l2A 20.....1
 5..Left-hand...............................2A 98......1..W.S.E. use 8G 731
 5..Left-hand...............................l2A 19.....1
 6..........................................8G 716.....1 set
 6..........................................8G 722.....1 set
 6..........................................8G 731.....1 set
 7..Seal-oil-main bearing cap...............2A 280.....2
 8..Screw-sump to crankcase (with washer)...6K 639....14
 9..Washer-plain............................2K 5197...14
10..Rod-oil dipper..........................2A 294.....1

OIL PUMP-PIPE-STRAINER
RELEASE VALVE-PRESSURE UNION

11..Pump-oil (Hobourn)........................2A 341.......1..W.S.E. use 12A 303
  ..Body......................................NSP..........1
12..Cover.....................................7H 1050......1..Correction; was 17H 1650
13..Screw-cover to body.......................HZS 0406.....2
14..Washer-spring.............................LWN 204......2
15..Shaft-driving (with rotors)...............17H 1965.....1

16..Pump-oiI (Hobourn)........................2A 962.......1..Alternative to 12G 793
  ..Body......................................NSP..........1
17..Cover (countersunk holes).................17H 1963.....1
18..Cover (plain hole)........................17H 6427.....1 
15..Shaft driving (with rotors)...............17H 1965.....1
19..Screw-countersunk.........................AJD 4205 Z...1
20..Screw-cheese-head.........................AJD 3204 Z...1
21..Dowel.....................................17H 1904.....2                                             
22..Screw.....................................HBN 0414.....3
23..Washer-lock...............................2A 339.......1

24..Pump-oiI (hobourn)........................12A 303......1..Alternative to 12G 50
  ............................................................W.S.E. use 2A 962
  ..Body......................................NSP..........1
25..Cover.....................................37H 863......1
21..Shaft-driving (with rotor)................37H 861......1
27..Dowel.....................................37H 964......1
18..Screw.....................................AJD 3204 Z...1
  ..Pump-oiI (Burman).........................2A 819.......1..W.S.E. use 12A 303 or
  ............................................................12G 5O
  ..Body and cover............................NSP..........1
29..Screw.....................................HBN 0411.....2
30..Washer-shakeproof.........................LWN 404......2
31..Dowel.....................................7H 6813......2
32..Rotor.....................................7H 6810......1
33..Vane-rotor................................7H 6807......2
34..Sleeve-rotor..............................7H 6808......1
35..Screw.....................................HBZ 0405.....3
36..Washer-spring.............................LWN 304......1
37..Pump-oil (Concentric).....................2A 813.......1
37............................................12A 107......1..W.S.E. use 12G 793
37............................................l2A 198......1
37............................................l2G 50.......1
37............................................12G 793......1..Alternative to 2A 962
38..Screw.....................................HBN 0414.....3
39..Washer-lock...............................2A 339.......1
40..Plate-lock-mounting screw.................2A 522.......1
41..Gasket-pump to crankcase..................2A 494.......1..W.S.E. use 12G 69
41..Gasket....................................l2G 69.......1..W.S.E. use 88G 411
41............................................88G 411......1
42..Strainer-oil..............................2A 668.......1
43..Pipe-suction (with oil strainer bracket)..2A 672.......1..(E) 9C/U/H101 to H272    W.S.E. use 2A 957
44..Pipe-suction (with oil strainer bracket)..2A 957.......1..(E) 9C/U/H273 on
45..Screw.....................................HNS 0404.....2
46..Washer-shakeproof.........................LWN 404......2
47..Screw.....................................HNS 0404.....2
48..Washer-shakeproof.........................LWN 404......2
49..Valve-oil release.........................1G 1452......1..W.S.E. use 12H 865
49..Valve-oil release.........................12H 865......1
50..Spring-valve..............................6K 853.......1
51..Nut-cap-valve.............................1A 2206......1
52..Washer (fibre)............................2K 4982......1..Use 6K 431 for this
  ............................................................application
53..Washer (copper)...........................6K 431.......1
54..Plug-oil priming..........................2K 4994......1
55..Washer (copper)...........................6K 464.......1
56..Union-oil pressure........................2A 269.......1
57..Washer (fibre)............................2K 4956......1