Question 1

How to remove the radiator on Toyota Sienna?

Accepted Answer

Beginning the radiator removal requires workers to detach the V-bank cover sub-assembly and No. 1 engine under cover before draining engine coolant. You need to start by taking out the No. 2 air cleaner inlet and battery and front bumper assembly before proceeding to remove the front bumper energy absorber together with the No. 1 air cleaner inlet. The radiator reserve tank hose or pipe needs removal in addition to disconnecting both No. 1 radiator hose connections and the No. 2 radiator hose. Unfasten the 4 claws holding the hood lock release lever protector then remove the hood lock assembly by disconnecting its connector and detaching three bolts and cable. The hood lock support sub-assembly becomes removable after disconnecting its ambient temperature sensor connector with clamp together with horn connectors. Remove the radiator upper support sub-assembly after detaching both fan ECU connector and clamp and then removing 4 bolts. The removal of the No. 2 oil cooler outlet tube sub-assembly begins by removing both No. 1 oil cooler inlet and outlet hoses and No. 1 transmission oil cooler hoses and then unfastening the 2 bolts. Disengage three claws from both the right headlight assembly and RH radiator side deflector to remove them before taking off the right headlight bracket with its three nuts. Two bolts installed into the pressure feed tube assembly allow removal of the tube while the No. 1 radiator support's two support cushions should also be removed. Sever the clamp before removing the six bolts from the No. 1 radiator support. The last step requires separating the condenser assembly from the radiator assembly with fan shroud while also removing the fan motor and radiator support lowers along with the No. 2 radiator support through its 2 bolts. The radiator accepts the inlet sub-assembly removal by disconnecting the inlet hose followed by unscrewing the bolt.

Question 2

How to install the radiator on Toyota Sienna?

Accepted Answer

When installing the radiator start by attaching the inlet hose to the radiator before tightening the inlet sub-assembly bolt to 7.1 Nm (72 kgf-cm, 63 in-lbf). The first step involves fixing the No. 2 radiator support through 2 bolts which receive 12.7 Nm (130 kgf-cm, 112 in-lbf) torque followed by radial nut inlet hose attachment to the radiator with a securing bolt oriented at 7.1 Nm (72 kgf-cm, 63 in-lbf). Then attach the radiator support lowers. Fasten the radiator to the shroud with the fan motor that contains two bolts to apply 6 Nm (61 kgf-cm, 4 ft-lbf) torque. Install the radiator assembly while mounting the fan shroud with fan motor then tighten the condenser assembly with two bolts which need 3.9 Nm (40 kgf-cm, 35 in-lbf) torque. Fasten the No. 1 radiator support to the radiator assembly with 6 bolts according to these values: Bolt A receives 13 Nm (130 kgf-cm, 9 ft-lbf) while Bolt B requires 3.9 Nm (40 kgf-cm, 35 in-lbf) followed by Bolt C needing 6 Nm (61 kgf-cm, 4 ft-lbf). Also attach the clamp. 2 radiator support cushions should be installed on the No. 1 radiator support while the pressure feed tube assembly can be installed using 2 bolts with a torque setting of 7.8 Nm (80 kgf-cm, 69 in-lbf). Mount the radiator side deflector RH by first tightening 3 claws and then installing the headlight bracket RH by using its 3 nuts. The installation procedure for the headlight assembly RH mirrors that of the LH side. The assembled No. 2 oil cooler outlet tube sub-assembly requires installation with 2 bolts receiving 6 Nm (61 kgf-cm, 4 ft-lbf) torque. Next, position No. 1 transmission oil cooler hoses through the radiator before linking both No. 1 oil cooler inlet and outlet hoses to the No. 2 oil cooler outlet tube sub-assembly. The radiator upper support sub-assembly requires 4 bolts torqued to 5.0 Nm (51 kgf-cm, 44 in-lbf) prior to connecting the cooling fan ECU connector with its clamp. The hood lock support sub-assembly receives two bolts for installation and a clamp for attachment before linking the low pitched horn, high pitched horn and ambient temperature sensor connectors. Mount the cable to the hood lock assembly using 3 bolts that should reach 8 Nm (82 kgf-cm, 6 ft-lbf) inside the tight fittings while creating a proper connection with the hood courtesy switch. Complete installation begins with attaching the hood lock release lever protector using the 4 claws before connecting the No. 2 radiator hose then moving forward to the No. 1 radiator hose and finally the radiator reserve tank hose or pipe. The installation process requires the front bumper assembly, No. 1 air cleaner inlet, front bumper energy absorber, and battery and finally the No. 2 air cleaner inlet. The technician should add engine coolant to the system and examine for any coolant leaks while adding automatic transaxle fluid before checking its fluid level. The last task involves installing the No. 1 engine under cover while also installing the V-bank cover sub-assembly along with preparations for performing headlight and fog light aim adjustments which include necessary inspections and adjustments.

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