Bronco L6-300 4.9L VIN Y 1-bbl (1983)
Fig. 44 Oil pump assembly. 351M & 400
ROTOR TYPE PUMP
1.
To disassemble, Figs. 42, 43 and 44, remove cover, inner rotor and shaft assembly and outer race. Remove staking marks at relief valve chamber
cap. Insert a self-threading sheet metal screw of proper diameter into oil pressure relief valve chamber cap and pull cap out of chamber. Then
remove spring and plunger.
2.
To assemble, install pressure relief valve plunger, spring and a new cap. Stake cap in place. Install outer race, inner rotor and shaft. Be sure
identification dimple mark on outer race is facing outward and on the same side as dimple on rotor. Inner rotor and shaft and outer race
are furnished only as a unit. One part should not be replaced without replacing the other.
3.
Install pump cover.
