7-12 ENGINE LUBRICATION SYSTEM

Oil Pump

Oil Pump Removal

•Remove:

Coolant (Drain, see Coolant Change in the Periodic Maintenance chapter)

Engine Oil (Drain, see Engine Oil Change in the Periodic Maintenance chapter)

Water Pump Cover Bolts [A] Water Pump Cover [B]

Water Hose Clamp Screw [C] (Loosen) Water Hose [D]

•Remove:

Water Hose Clamp Screw [A] (Loosen) Water Hose [B]

Impeller Bolt [C] and Washer Impeller [D]

•Install the impeller bolt [A] temporary.

•Using the impeller bolt [A], pull out the oil (water) pump [B] as a assembly.

•Remove the outer rotor [C].

•Remove:

Water Pump Body [A] Oil Pump Cover [B] Inner Rotor [C]

Pin [D]

Oil (Water) Pump Shaft [E]

ENGINE LUBRICATION SYSTEM 7-13

Oil Pump

Oil Pump Installation

•Install the outer rotor [A] into the crankcase.

•Install the pin [B] and inner rotor [C] to the oil (water) pump shaft [D], and install the assy.

○Turn the pump shaft so that the slot [E] in its shaft fits onto the projection [F] of the pump drive gear shaft.

•Fit the pin [A] of the oil pump cover [B] into the hole [C] in the crankcase.

•Replace the O-ring [A] with a new one.

•Apply grease to the new O-ring.

•Install the dowel pins [B].

•Fit the pin of the crankcase into the holes [C] in the water pump body [D].

•Apply coolant to the surface of the rubber seal [A] on the impeller.

•Install the impeller, washer and bolt.

•Tighten:

Torque - Impeller Bolt: 9.8 N·m (1.0 kgf·m, 87 in·lb)

•Install the water hose [A] and hose clamp [B] as shown in the figure.

White Mark [C]

•Tighten:

Torque - Water Hose Clamp Screws: 2.0 N·m (0.20 kgf·m, 18 in·lb)

•Replace the O-ring [D] with a new one.

•Apply grease to the new O-ring.

•Install the dowel pins [E] and water pump cover.

•Apply a non-permanent locking agent to the threads of the water pump cover bolts, and tighten them.

Torque - Water Pump Cover Bolts: 12 N·m (1.2 kgf·m, 106 in·lb)

7-14 ENGINE LUBRICATION SYSTEM

Oil Pump

•Align the line [A] of the water pump cover and the white mark [B] of the water hose [C].

•Install the water hose clamp [D] as shown in the figure.

•Tighten:

Torque - Water Hose Clamp Screws: 2.0 N·m (0.20 kgf·m, 18 in·lb)

Oil Pump Drive Gear Removal

•Remove the clutch (see Clutch Removal in the Clutch chapter).

•Fit the suitable tool into the hole of the oil passage plug [A].

•Hold the oil pump drive gear [A] steady with the suitable tool [B], and remove the bolt [C].

•Remove the oil pump drive gear.

Oil Pump Drive Gear Installation

•Align the groove [A] of the oil pump drive gear to the oil pump drive gear shaft [B] to install the oil pump drive gear.

•Apply a non-permanent locking agent to the threads of the oil pump drive gear bolt.

•Hold the oil pump drive gear steady with the suitable tool, and tighten the bolt.

Torque - Oil Pump Drive Gear Bolt: 9.8 N·m (1.0 kgf·m, 87 in·lb)

Oil Pump Drive Gear Shaft Removal

•Remove:

Oil Pump Drive Gear (see Oil Pump Drive Gear Removal)

Oil Pan (see Oil Pan Removal) Circlip [A]

Washer [B]

Oil Pump Drive Gear Shaft [C]

Special Tool - Outside Circlip Pliers: 57001-144

ENGINE LUBRICATION SYSTEM 7-15

Oil Pump

Oil Pump Drive Gear Shaft Installation

•Apply molybdenum disulfide oil solution to the journal portions [A] on the oil pump drive gear shaft.

•Install the oil pump drive gear shaft and washer [B] as shown in the figure.

•Install the new circlip [C] into the groove of the oil pump drive gear shaft.

Special Tool - Outside Circlip Pliers: 57001-144