Oil Pump — 2.0L Engine (3S-FE) [Toyota Carina T170]

Removal and installation the oil pump

As with the 1.6L engine, the oil pan and oil intake screen must be removed to remove the oil pump. The standard centrifugal pump is located under a cover bolted to the outside of the pump housing. Remove the pump gear before the cover is crushed.

• Drain the oil from the engine and remove the oil pan.
• Unscrew 2 bolts and 2 nuts, remove the oil deflector screen and oil receiver mesh from the bottom of the crankcase. Figure 111 shows the location of the oil receiver mesh.
• Remove the toothed belt drive in accordance with the instructions in Chapter 2.8 for the 2.0 l engine.
• Loosen the pump drive gear nut (while holding the gear) and remove the gear from the shaft.
• Remove the 12 bolts from the front of the engine and remove the pump assembly with the gasket. If the pump is firmly seated, you can carefully tap the pump housing from the inside of the crankcase with a plastic hammer. Install the pump in reverse order. Tighten the bolts evenly to a tightening torque of 9 Nm. Install the toothed belt as described when installing the cylinder head of this engine. Finally, install the oil pan (chapter 3.1) and pour the prescribed amount of oil into the engine.

Oil pump overhaul

Figure 117 shows the pump parts.

• Unscrew the two bolts from the front of the pump, remove the cover and remove the sealing ring from the groove.
• Pull out both rotors. Rotors are replaced only as a set. Mark the outer side of the rotor with a felt-tip pen. Clean and check all parts. Replace defective parts immediately. To check the rotors, perform the following checks:
• Insert both rotors into the housing as shown in Fig. 115 and measure the gap between the outside of the outer rotor and the pump bore with a feeler gauge. If the measurement exceeds the maximum value of 0.20 mm, replace the rotor set or the oil pump. At the next check, measure the gap between the tip of the outer rotor and the tip of the inner rotor with a feeler gauge (middle part of figure 115), At this point, the gap । should not exceed 0.20 mm. Otherwise, replace the rotors in the set or the pump. Place a ruler on the surfaces of the rotors and the housing (right side of figure 115) and measure the gap between the rotors with a feeler gauge. The gap should not exceed 0.10 mm. When removing the pump, be sure to replace the seal in the pump body. Check the piston hole of the pressure reducing valve for wear and scoring. Assemble the oil pump in the reverse order, following these steps:
• Install a new sealing ring into the pump housing. The sealing ring is pressed in until the outer surface of the ring protrudes 1.0 mm above the housing surface.
• Insert a new sealing ring into the groove in the housing and insert both rotors into the housing as shown in Figure 118. When installing the old rotors, pay attention to the marking on the outer rotor. Pour a little oil from the oiler into the rotors.

• Lubricate the gland jaws and carefully slide the cover onto the pump casing without damaging the gland. Tighten both bolts of the cover with the tightening torque (10 Nm).
• Install the pressure reducing valve parts according to Fig. 119 and secure them with the retaining ring.