Rocker Arm Assembly
- With rocker arm assembly removed and disassembled, inspect all components for wear or damage. The standard clearance between rocker arm bore and shaft on 1415 cc is 0.0008 - 0.0029" (0.020 - 0.074 mm) and on 1970 cc is 0.0011 - 0.0032" (0.027 - 0.081 mm). If measured clearance is more than 0.004" (0.010 mm), replace rocker arm or shaft.
- Reassemble and install rocker shaft while noting the following: Intake and rocker arm supports are interchangeable. Intake side uses 2 rocker shafts. On intake side, end of shaft with longer distance between oil hole and shaft end face each other. Center bearing cap oil hole faces toward intake side.
- When installing the oil distribution pipe, make sure the oil holes face camshaft. After pipe is installed, press "O" ring into hole for pipe on center bearing cap. When installing rocker arm assembly, make sure flat surface on ball of each rocker arm faces downward. Align dowels and install assembly on cylinder head. Before tightening cylinder head bolts, offset each of the rocker arms 0.040" (1 mm) from valve stem center by shifting the rocker shaft support stands slightly.
Courtesy of MAZDA MOTORS CORP.
Courtesy of MAZDA MOTORS CORP.
Courtesy of MAZDA MOTORS CORP.