S&S Cycle Billet Oil Pump for Big Twin Engines - Manual (Page 7)

7
1. Disassembly and Crankcase Identification - All Years.
A. Remove old oil pump and mounting studs (if applicable) from crankcase.
B. Identify crankcases by comparing them to those in photo. See Picture 8. Circle year group that matches your crankcases to avoid
confusion later.
1. Main oil supply.
2. Excess oil and pressure valve relief.
3. Front chain oil.
4. Pinion shaft oil.
5. Top end oil.
6. Top end and tappet block oil.
7. Pressure valve relief.
OIL PASSAGE IDENTIFICATION
Picture 8
1
2
2
4
5
3
2
1
3
2
1
1 2
4
6
3
7
6 4
3
1936-1947 1948-1952
1953-1964 1965-1969
1970-1972 1973-1980
1981-Present