04/06/2024 21:10:52

驱动单元 - 后 (4DU)（拆卸和安装）

校正代码 40011011 3.30 注意：除非本程序中另有明确规定，否则上述校正代码和 FRT 反映的是执行本程序（包括关联程序）所需的所有工作。除非明确要求，否则请勿堆叠校正代码。注意：请参阅平均维修工时，深入了解 FRT 及其创建方式。要提供有关 FRT 值的反馈，请发送电子邮件至LaborTimeFeedback@tesla.com。注意：请参阅人员保护，确保在执行以下程序时穿戴适当的个人防护装备 (PPE)。

2024-01-12: Updated torque figure for the bolt that attaches the ground strap to the RDU from 6 Nm to 10 Nm.
2023-10-25: Updated torque figure for rear upper fore link to knuckle from 76 Nm to 84 Nm.
2023-06-08: Added shear plate small bolts torque figure for Structural Pack type vehicles.
2023-05-02: Corrected step crossreferences.

警告

本程序为“草案”。虽已通过验证，但可能仍有“警告”和“小心”事项缺失。请遵守安全要求，处理或靠近高压系统和部件时，请谨慎操作。请将校正修理内容及反馈发送至ServiceDevelopment@teslamotors.com。

拆卸

While performing the courtesy inspection, note any abnormal tire wear that could indicate the need for an alignment.
Move the vehicle to a 2 post lift. See 举升车辆 - 双柱举升机.
Chock a front wheel to prevent the vehicle from rolling in subsequent steps.
Enable Service Mode from the touchscreen. See 维护模式.
From the touchscreen, touch Thermal > Actions > Start Thermal Fill Drain (Coolant + Refrigerant), and allow the routine to complete.
From the touchscreen, touch Controls (vehicle icon) > Service > Towing > Transport Mode, and allow the routine to complete.
Remove the rear underhood apron. See 前备箱挡板 - 后部（拆卸和更换）.
Remove the HEPA filter assembly. See 总成 - 过滤器 - 高效分子空气 (HEPA)（拆卸和更换）.
Remove the HEPA duct. See 风管 - 高效分子空气 (HEPA)（拆卸和更换）.
Disconnect LV power. See 12V/低压电源（断开和连接）.
执行车辆高压禁用程序。请参阅车辆高压禁用程序。
Remove the LH and RH rear wheels. See 轮毂（拆卸和更换）.
Remove the LH and RH rear suspension covers. See 盖板 - 后悬架 - LH（拆卸和更换）.
Remove the mid aero shield panel. See 面板 - 流线型护板 - 中间（拆卸和更换）.
Remove the rear diffuser. See 扩散器 - 后饰板（拆卸和更换）.
Remove the nut that attaches the rear drive unit ground strap to the body, and then remove the ground strap from the body.
Remove and discard the bolts (x2) that attach the LH rear brake caliper to the LH rear knuckle, remove the caliper from the knuckle, and then hang the caliper from an S-hook.
Install the Gedore spring compressor onto the LH rear coil spring, and slightly compress the spring to take the load off of the suspension.

注
Refer to the Tooling Profile for additional information.
Remove the bolts (x2) that attach the LH rear strut to the body at the LH top mount.
Repeat step 17 through step 19 on the RH side of the vehicle.
Release the red locking tab and then disconnect the electrical harness from the rear subframe harness RH connector.
Release the clip that attaches the rear subframe harness to the body on the RH side.
Release the red locking tab and then disconnect the electrical harness from the rear subframe harness LH connector.
Release the clip that attaches the rear subframe harness to the body on the LH side.
Remove and discard the nut that attaches the LH rear stabilizer bar end link to the rear stabilizer bar.

注
Use a 5mm allen wrench to prevent the ball joint stud from turning and damaging the ball joint.
Remove LH rear stabilizer bar end link from the rear stabilizer bar.

注
Move the stabilizer bar up and down to ease removal of the end link.
Remove and discard the nut that attaches the RH rear stabilizer bar end link to the rear stabilizer bar.

注
Use a 5mm allen wrench to prevent the ball joint stud from turning and damaging the ball joint.
Remove RH rear stabilizer bar end link from the rear stabilizer bar.

注
Move the stabilizer bar up and down to ease removal of the end link.
Remove and discard the bolts (x4) that attach the rear stabilizer bar to the rear subframe, and then remove the stabilizer bar from the subframe.
Release the clips (x2) that attach the coolant hoses to LH shear plate.
Release the clips (x4) that attach the coolant hoses to the rear skid plate.

注
Clip quantity varies with older vehicles.
Release the clips (x2) that attach the coolant hoses to RH shear plate.
Remove the HV battery rear skid plate. See 滑板 - 高压电池 - 后部（拆卸和更换）.
Position a coolant drain collector underneath the LH rear of the HV battery.
Release the clip, disconnect the rear drive unit inverter inlet hose from the HV battery, and then immediately plug both fittings.
Release the clip, disconnect the rear drive unit inverter inlet hose from the rear drive unit inverter, and then immediately plug both fittings.
Release the clip that attaches the rear drive unit inverter inlet hose from rear drive unit HV harness.
Remove the rear drive unit inverter inlet hose down and out from between the rear subframe and the HV battery.
Position a coolant drain collector underneath the RH rear of the HV battery.
Release the clips (x2) that attach the RH rear wheel arch liner to the RH rocker panel, and then move the liner aside for access.
Release the clip, disconnect the rear drive unit coolant outlet hose from the powertrain return hose, and then immediately plug both fittings.
Remove the coolant drain collector from under the vehicle.
Release the locking tab, push the handle downward, and then disconnect the rear subframe electrical harness from the rear drive unit inverter logic connector.

警告
Once disconnected, make sure that coolant does not get into the connectors.
Release the clip that attaches the rear subframe electrical harness to the rear drive unit inverter.
Remove the bolt that attaches the rear drive unit HV harness bracket to the rear drive unit inverter.
Slide the locking tab, raise the black handle, disconnect the rear drive unit HV harness from the rear drive unit inverter HV header,and then set the HV harness aside.
Remove the nut(s) that attach(es) the rear drive unit HV harness bracket to the HV battery.
Slide the red locking tab, raise the black handle, and then disconnect the rear drive unit HV harness from the HV battery header.
Remove the rear drive unit HV harness down and out from between the rear subframe and the HV battery.

注
Rotate the harness as it is removed to allow access for the bracket.
Position the subframe lifting tool under, and up against the rear subframe.
With the help of an assistant, fully secure the straps (x3) that attach the rear subframe to the subframe lifting tool.
Use a paint pen to trace around the LH and RH rear subframe mounting bolts, so that the bolts can be realigned later during the subframe installation.
Use a paint pen to apply a witness mark where the rear subframe contacts the body at the LH and RH rear subframe mounting bolts, so that the subframe can be realigned to the body later during subframe installation.
Remove the small bolts (x2) that attach the LH shear plate to the HV battery.
Remove the large bolt that attaches the LH shear plate and rear subframe to the body, and then remove shear plate.
Remove the small bolts (x2) that attach the RH shear plate to the HV battery.
Remove the large bolt that attaches the RH shear plate and rear subframe to the body, and then remove shear plate.
Remove and discard the LH rear subframe bolt that attaches the subframe to the body.
Carefully lower the rear subframe and rear drive unit assembly from the vehicle, and move it out from under the vehicle.

警告
Do not damage hoses or harnesses while lowering the subframe.
Release the clip that attaches the rear drive unit ground strap to the rear subframe.
Remove the bolt that attaches the rear drive unit ground strap to the rear drive unit, and then remove the ground strap from the drive unit.
Position a coolant catcher under the RH side of the subframe and rear drive unit assembly, and position a foldable funnel to direct coolant drain from the heat exchanger.
Release the clip, disconnect the rear drive unit coolant outlet hose from the rear drive unit heat exchanger, and allow the heat exchanger and hose to drain.
Release clips (x3) that attach the rear drive unit coolant outlet hose to rear drive unit, and then manuever the hose out from between the drive unit and rear subframe.
Release the clips (x2) that attach the rear drive unit inverter outlet to heat exchanger hose to the rear drive unit.
Cut the rear drive unit inverter NVH cover at the line indicated so as to access the clip for the rear drive unit inverter to heat exchanger hose.

注
Open the cut in the NVH cover, but be carefull not to remove any of the cover in doing so.
Release the clip, disconnect the rear drive unit inverter to heat exchanger hose from the rear drive unit inverter outlet, and allow to drain.
Release the clip, disconnect the rear drive unit inverter to heat exchanger hose from the rear drive unit heat exchanger, and allow to drain.
Release the remaining clips (x2) that attach the rear drive unit inverter outlet to heat exchanger hose to the rear drive unit, and then manuever the hose out from between the drive unit and rear subframe.
Pull the red tab to release, and then pull the red tab again to disconnect the rear subframe harness from the oil pump connector.
Pull the red tab to release, pull the red tab again to disconnect the rear subframe harness from the resolver connector, and then release the clips (x2) that attach the subframe harness to the rear drive unit.
Remove the bolt that attaches the LH rear wheel speed sensor to LH rear knuckle, and then remove the sensor from the knuckle.
Release the grommet that attaches the LH rear wheel speed sensor harness to LH rear knuckle.
Remove the nut and bolt that attach the LH rear upper aft link to the LH rear knuckle.
Remove the nut and bolt that attach the LH rear upper fore link to the LH rear knuckle.
Remove the nut and bolt that attach the LH rear toe link to the LH rear knuckle.
Loosen, but do not remove, the nut and bolt that attach the LH rear lower fore link to the LH rear knuckle.
Position the axle remover cable around the inner joint of the LH rear drive unit halfshaft, and then use the U-bolt to hold the axle remover cable in position.
Hook the axle remover slide hammer onto the 2 axle remover cable loops, and then use the slide hammer to remove the LH halfshaft from the rear drive unit.

注
Be carefull not to damage the halfshaft boots and drive unit seals when separating the halfshaft from the drive unit.
Repeat step 72 through step 79 on the RH side of the rear subframe assembly.
Position the rear subframe assembly under the gantry.
Use the shackles (x3) to attach the drive unit sling tool to the rear drive unit.
Attach the drive unit sling tool to the gantry.
Use the gantry to raise the drive unit sling tool so that there is slight tension in the cables.
Remove the bolt that attaches the rear drive unit to the LH side of the rear subframe.
Remove the bolt that attaches the rear drive unit to the RH side of the rear subframe.
Remove the bolt that attaches the rear drive unit to the rear of the rear subframe.
With the help of an assistant, use the gantry to raise the rear drive unit sling tool, guide halfshafts away from the rear drive unit, and separate the rear drive unit up from the rear subframe.
Move the rear subframe and subframe lift out from underneath the rear drive unit, and then lower the rear drive unit onto a protected surface.
Remove the drive unit sling tool from the rear drive unit.

安装

Use the shackles (x3) to attach the drive unit sling tool to the rear drive unit.
Use the gantry to lift the rear drive unit off of the protective surface and position the rear subframe and subframe lift underneath the drive unit.
With the help of an assistant, use the gantry to lower the rear drive unit sling tool, guide halfshafts into the rear drive unit, and lower the rear drive unit into the rear subframe.
Lower the rear drive unit sling tool so as to install and hand tighten the bolt that attaches the rear drive unit to the rear of the rear subframe.
Install and hand tighten the bolt that attaches the rear drive unit to the RH side of the rear subframe.
Install and hand tighten the bolt that attaches the rear drive unit to the LH side of the rear subframe.
Lower the drive unit sling tool to release tension in the cables, and then remove the sling tool from the rear drive unit.
Remove the drive unit sling tool from the gantry.
Tighten the rear drive unit mount bolts (x3).
80 Nm (59.0 lbs-ft)
With the help of an assistant, slightly rotate the LH halfshaft so as to align the splines of the halfshaft to those in the rear drive unit, lift up on the LH rear knuckle to help move the halfshaft into the drive unit, and then apply force to seat the halfshaft in the drive unit.

注
If the halfshaft binds, back the halfshaft out, rotate it slightly, and try again.

注
A snap is heard when the retaining clip seats onto the fully inserted halfshaft.
Install the LH rear toe link to the LH rear knuckle, and then install and hand-tighten the nut and bolt that attach the link to the knuckle.
Install the LH rear upper fore link to the LH rear knuckle, and then install and hand-tighten the nut and bolt that attach the link to the knuckle.
Install the LH rear upper aft link to the LH rear knuckle, and then install and hand-tighten the nut and bolt that attach the link to the knuckle.
Fasten the grommet that attaches the LH rear wheel speed sensor harness to LH rear knuckle.
Install the LH rear wheel speed sensor to LH rear knuckle, and then install the bolt that attaches the sensor to knuckle.
5 Nm (3.7 lbs-ft)
Repeat step 10 through step 15 on the RH side of the rear subframe assembly.
Connect the rear subframe harness to the resolver connector, push the red tab to secure, and then fasten the clips (x2) that attach the subframe harness to the rear drive unit.
Connect the rear subframe harness to the oil pump connector, and then push the red tab to secure.
Manuever the rear drive unit inverter outlet to heat exchanger hose in between the rear drive unit and rear subframe, and then fasten the clips (x2) that attach the hose to the drive unit.
Connect the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
Connect the rear drive unit inverter to heat exchanger hose to the rear drive unit inverter outlet, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
Fasten the clips (x2) that attach the rear drive unit inverter outlet to heat exchanger hose to the rear drive unit.
Manuever the rear drive unit coolant outlet hose in between the rear drive unit and rear subframe, and then fasten the clips (x3) that attach the hose to drive unit.
Connect the rear drive unit coolant outlet hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
Install the rear drive unit ground strap to the rear drive unit, and then install the bolt that attaches the ground strap to the drive unit.
10 Nm (7.4 lbs-ft)
Fasten the clip that attaches the rear drive unit ground strap to the rear subframe.
Position the rear subframe and rear drive unit assembly under the vehicle.
Carefully raise the subframe and rear drive unit assembly until they are up against the body.

警告
Do not damage hoses or harnesses while raising the subframe.
Install and hand-tighten a new RH rear subframe bolt to attach the rear subframe to the body.
Install and hand-tighten a new LH rear subframe bolt to attach the rear subframe to the body.
Install the RH shear plate to the rear subframe, and then install a new large bolt to attach the RH shear plate and rear subframe to the body.
Install and hand-tighten the small bolts (x2) that attach the RH shear plate to the HV battery.
Install the LH shear plate to the rear subframe, and then install a new large bolt to attach the LH shear plate and rear subframe to the body.
Install and hand-tighten the small bolts (x2) that attach the LH shear plate to the HV battery.
Use a pry bar to shimmy the rear subframe with respect to the body, so that the subframe mounting bolts are centered in the tracings, and the witness marks align where the subframe contacts the body.
Tighten the RH rear subframe bolt that attaches the rear subframe to the body, and then mark the bolt after tightenting.
165 Nm (121.7 lbs-ft)
Tighten the LH rear subframe bolt that attaches the rear subframe to the body, and then mark the bolt after tightenting.
165 Nm (121.7 lbs-ft)
Tighten large bolt that attaches the LH shear plate and rear subframe to the body, and then mark the bolt after tightenting.
130 Nm (95.9 lbs-ft)
Tighten large bolt that attaches the RH shear plate and rear subframe to the body, and then mark the bolt after tightenting.
130 Nm (95.9 lbs-ft)
Tighten the small bolts (x2) that attach the RH shear plate to the HV battery.
For non-Structural Pack vehicles:
35 Nm (25.8 lbs-ft)
For Structural Pack vehicles:
62 Nm (45.7 lbs-ft)
Tighten the small bolts (x2) that attach the LH shear plate to the HV battery.
For non-Structural Pack vehicles:
35 Nm (25.8 lbs-ft)
For Structural Pack vehicles:
62 Nm (45.7 lbs-ft)
Release the straps (x3) that attach the rear subframe to the subframe lifting tool.
Lower the subframe lifting tool, and move it out from under the vehicle.
Install the rear drive unit HV harness in and up between the rear subframe and the HV battery.

注
Rotate the harness as it is installed to allow access for the bracket.
Verify that the black release lever of the rear drive unit HV harness connector is in the open position, install the connector flat and square to the HV battery header, secure the release lever to the closed position, and then slide the red connector locking tab.
Install the nut(s) that attach(es) the rear drive unit HV harness bracket to the HV battery.
10 Nm (7.4 lbs-ft)
Verify that the black release lever of the rear drive unit HV harness connector is in the open position, install the connector flat and square to the rear drive unit inverter HV header, secure the release lever to the closed position, and then slide the connector locking tab.
Install the bolt that attaches the rear drive unit HV harness bracket to the rear drive unit inverter.
6 Nm (4.4 lbs-ft)
Inspect the rear subframe electrical harness logic connector and the rear drive unit inverter logic connector for coolant, and use shop air and a clean dry shop towel to remove any coolant from the connectors.
Connect the rear subframe electrical harness to the rear drive unit inverter logic connector, raise the handle upward, and fasten the locking tab.
Fasten the clip that attaches the rear subframe electrical harness to the rear drive unit inverter.
Position a coolant drain collector underneath the LH rear of the HV battery.
Install the rear drive unit inverter inlet hose in and up between the rear subframe and the HV battery.
Fasten the clip that attaches the rear drive unit inverter inlet hose to rear drive unit HV harness.
Remove the plugs from the fittings, immediately connect the rear drive unit inverter inlet hose to the rear drive unit inverter, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
Remove the plugs from the fittings, immediately connect the rear drive unit inverter inlet hose to the HV battery, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
Position the coolant drain collector underneath the RH rear of the HV battery.
Remove the plugs from the fittings, immediately connect the rear drive unit coolant outlet hose to the powertrain return hose, fasten the clip, and then perform a Push-Pull-Push check of the fitting..
Return the RH rear wheel arch liner to position, and then fasten the clips (x2) that attach the liner to the RH rocker panel.
Remove the coolant drain collector from under the vehicle.
Install the HV battery rear skid plate. See 滑板 - 高压电池 - 后部（拆卸和更换）.
Fasten the clips (x2) that attach the coolant hoses to RH shear plate.
Fasten the clips (x4) that attach the coolant hoses to the rear skid plate.

注
Clip quantity varies with older vehicles.
Fasten the clips (x2) that attach the coolant hoses to LH shear plate.
Install the rear stabilizer bar to the rear subframe, and then install new bolts (x4) to attach the stabilizer bar to the subframe.
30 Nm (22.1 lbs-ft)
Install the LH rear stabilizer bar end link into the rear stabilizer bar.

注
Move the stabilizer bar up and down to ease installation of the end link.
Install a new nut to attach the LH rear stabilizer bar end link to the rear stabilizer bar.
55 Nm (40.6 lbs-ft)

注
Use a 5mm allen wrench to prevent the ball joint stud from turning and damaging the ball joint.
Install the RH rear stabilizer bar end link into the rear stabilizer bar.

注
Move the stabilizer bar up and down to ease installation of the end link.
Install a new nut to attach the RH rear stabilizer bar end link to the rear stabilizer bar.
55 Nm (40.6 lbs-ft)

注
Use a 5mm allen wrench to prevent the ball joint stud from turning and damaging the ball joint.
Fasten the clip that attaches the rear subframe harness to the body on the LH side.
Connect electrical harness to the rear subframe harness LH connector and then fasten the red locking tab.
Fasten the clip that attaches the rear subframe harness to the body on the RH side.
Connect electrical harness to the rear subframe harness RH connector and then fasten the red locking tab.
Install the rear drive unit ground strap to the body, and then install the nut that attaches the ground strap to the body.
10 Nm (7.4 lbs-ft)
Install the LH rear strut to the body at the LH top mount, and then install the bolts (x2) that attach the strut to the body.
41 Nm (30.2 lbs-ft)
Remove the S-Hook, install the LH rear brake caliper to the LH rear knuckle, and then install new bolts (x2) to attach the caliper to the knuckle.
83 Nm (61.2 lbs-ft)
Remove the bolt that attaches the LH rear brake rotor to the hub.
Install the hub jack adapter onto the LH rear hub and hand-tighten the lug nuts (x5).
Use an underhoist stand to support the hub jack adapter and simulate the LH rear suspension at ride height.
Use the rear ride height torque gauge to verify the LH rear suspension is set to ride height specification.

注
It may be necessary to slightly adjust the underhoist stand or Gedore spring compressor tool.
The distance between the bottom of the quarter panel and the center of the rear axle should be 427 mm when the rear suspension is set to ride height.

注
It may be necessary to slightly adjust the underhoist stand or Gedore spring compressor tool.
Tighten the bolt and nut that attach the LH rear upper aft link to the knuckle, and then mark the fasteners with a paint pen after tightening
134 Nm (98.8 lbs-ft)
Tighten the bolt and nut that attach the LH rear upper fore link to the knuckle, and then mark the fasteners with a paint pen after tightening
84 Nm (61.9 lbs-ft)
Tighten the bolt and nut that attach the LH rear toe link to the knuckle, and then mark the fasteners with a paint pen after tightening
76 Nm (56.0 lbs-ft)
Tighten the bolt and nut that attach the LH rear lower fore link to the knuckle, and then mark the fasteners with a paint pen after tightening
76 Nm (56.0 lbs-ft)
Remove the underhoist stand from underneath the LH rear suspension.
Remove the lug nuts (x5) that attach the hub jack adapter, and then remove the hub jack adapter from the vehicle.
Install the bolt that attaches the LH rear brake rotor to the hub.
5 Nm (3.7 lbs-ft)
Remove the Gedore spring compressor from the LH rear coil spring.

注
Refer to the Tooling Profile for additional information.
Repeat step 75 through step 89 for the RH side of the vehicle.
Install the rear diffuser. See 扩散器 - 后饰板（拆卸和更换）.
Install the mid aero shield panel. See 面板 - 流线型护板 - 中间（拆卸和更换）.
Install the LH and RH rear suspension covers. See 盖板 - 后悬架 - LH（拆卸和更换）.
Install the LH and RH rear wheels. See 轮毂（拆卸和更换）.
Perform a cooling system vacuum refill. See 冷却系统（真空重新加注）.
Connect LV power. See 12V/低压电源（断开和连接）.
On the touchscreen, press and hold the Park button to disable EPB service mode, and then remove any wheel chocks.
From the touchscreen, touch Thermal > Actions > Stop Thermal Fill Drain, and allow the routine to complete.
From the touchscreen, touch Thermal > Coolant System > Coolant Purge, touch Run, and allow the routine to complete.
Add coolant to the reservoir as necessary, and install the reservoir cap.
From the touchscreen, touch Thermal > Actions > Test Thermal Performance, touch Run, and allow the routine to complete.
Install the HEPA duct. See 风管 - 高效分子空气 (HEPA)（拆卸和更换）.
Install the HEPA filter assembly. See 总成 - 过滤器 - 高效分子空气 (HEPA)（拆卸和更换）.
Install the rear underhood apron. See 前备箱挡板 - 后部（拆卸和更换）.
Disable Service Mode. See 维护模式.
Remove the vehicle from the 2 post lift. See 举升车辆 - 双柱举升机.
请参阅“定位要求”表，确定是否需要进行电动助力转向 (EPAS) 定位检查 (EC) 或四轮定位检查 (AC)。如果已执行，请作为一项单独的工项添加定位检查/调整。请参阅定位要求 - 悬架。