Oil pump

Schematic: E-13 Oil Pump
Affected/related parts:

Variation 1: Early geared pump

• Distinguishing features:
• Part number(s):
• 15210-028-010 (oil pump body): frame 111,565 to 141,787 and 424,487 to 431,842
• 15210-028-020 (oil pump body): frame 141,788 to 142,498 and 431,843 to 575,923
• 15210-028-030 (oil pump body): 575,924 to 677,883
• Early or Late: Early
• Notes:
• There were 2 versions of the geared pump
• one with a primary spray tube oiler (oil pipe)
• a later version without the oiler

The pump with the spray tube oiler (oil pipe)

The oil pipe shown mounted on the crankcase

Compare the version of the crankcase with holes for the oil pipe...

...versus the version of the crankcase with no holes for the oil pipe. (holes are sealed off)

The pump without the oiler

Inside the geared pump.

Variation 2: Late trochoid pump

• Distinguishing features:
• Part number(s):
• 15210-028-040 (oil pump body)
• 15210-028-060 (oil pump body)
• Early or Late: Very Late
• Begins at frame number 677,884
• Notes:
• The trochoid pump was higher output than the earlier geared version
• These are somewhat more difficult to find than the earlier style

The Late right crankcase which takes the trochoid pump.