LU-6 LUBRICATION SYSTEM — Oil Pump INSPECTION OF OIL PUMP 1. INSPECT RELIEF VALVE Check the relief valve for scoring or wear. If damaged, replace the valve or pump assembly. 2. MEASURE BODY CLEARANCE Using a feeler gauge, measure the clearance between the driven gear and body. Standard clearance: 0.03 - 0.08 mm (0.0012 - 0.0024 in.) Maximum clearance: 0.2 mm (0.008 in.) If the clearance is greater than maximum, replace the gear and/or body. 3. MEASURE GEAR BACKLASH Using a feeler gauge, measure the backlash as shown. Standard clearance: 0.5 - 0.8mm (0.020 - 0.024 in.) Maximum backlash: 0.9 mm (0.035 in.) If the blaklash is greater than maximum, replace the shaft subassembly and/or driven gear. 4. MEASURE SIDE CLEARANCE Using a feeler gauge and flat block, measure the side clearance as shown. Standard clearance: 0.03 - 0.09 mm (0.0012 - 0.0035 in.) Maximum clearance: 0.15 mm (0.0059 in.) If the clearance is greater than maximum, replace the gears and/or body. ASSEMBLY OF OIL PUMP (See page LU-4) ASSEMBLE OIL PUMP ASSEMBLY (a) Fit the shaft subassembly, key, drive shaft gear, drive spacer and snap ring. (b) Install the driven gear and pump cover with five bolts. (c) Install the relief valve and spring in the cover and screw on the relief valve plug.