CHASSIS ± SUSPENSION AND AXLES
No.2 Trailing
Arm Bushing
182CH35
Axle Beam
Trailing ArmNo.1 Trailing Arm
BushingToe-Control Link
Trailing Arm
No.2 Trailing Arm
Bushing
No.3 Trailing Arm Bushing
181CH35
Lengthwise ForceLateral Force
Lateral Force
Applied to
the Toe
Control Link
Bushing
Movement
Lateral Force
Toe Control
Links
Left-Side
WheelLeft-Side
Wheel97
Trailing Arm and Axle Beam
Trailing arms that are lightweight, highly rigid, hollow inside, and a gently curved axle beam with a rear-
open U-shaped cross section have been adopted.
A toe control links integrated axle beam has been adopted. The toe control link consists of the No.1, No.2,
and No.3 trailing arm bushings, and it rotates within the horizontal plane of the vehicle, around the No.3
bushing that serves as the axial center.
The rolling regidity has been optimized through the adoption of the stabilizer bar.
Toe-Correct Function
The longitudinal and lateral forces that are created in the vehicle during cornering causes the toe control
links in the trailing arms to become deformed.
On a right turn, the right trailing arm moves forward and the left trailing arm moves rearward, creating a
tendency for the left wheel to toe out.
In this situation, the toe control links that are installed in the trailing arms are designed to utilize the lateral
force, which is applied to the toe control links during cornering, to correct the left trailing arm towards the
toe-in direction.
As a result, excellent stability and controllability are realized.
IN±16
± INTRODUCTIONFOR ALL OF VEHICLES
16 Author: Date:
2001 PRIUS (RM778U)
6. ACTIONS TO BE TAKEN FOR VEHICLE DAMAGED BY
IMPACT
(a) Items to be prepared (For operation at the site of acci-
dent)
Protective clothing (Insulated gloves, rubber
gloves, goggles, and safety shoes)
Saturated boric acid solution 20 L (Procure 800 g of
boric acid powder, put it into a container, and dis-
solve it in water.)
Red litmus paper
ABC fire extinguisher (Applicable to both oil flames
and electrical flames)
Waste rags or old towels (For wiping off the electro-
lyte)
Vinyl tape (For insulating cable)
Electrical tester
(b) Actions to be taken at the place of accident
(1) Wear insulated or rubber gloves, goggles and safe-
ty shoes.
(2) Do not touch a bare cable that could be a high±volt-
age cable. If you need to touch it, or if you have a
danger of making an accidental contact, wear insu-
lated gloves, measure the voltage between the
cable and body ground using an electrical tester,
and insulate the cable using vinyl tape.
(3) If the vehicle catches fire, use a ABC fire extinguish-
er to extinguish the fire. Trying to extinguish the fire
using only a small amount of water can be more
dangerous than effective: either use a greater
amount of water from a fire hydrant or wait for the
fire fighters.
(4) If the vehicle is partially submerged in water, do not
touch the service plug or any of the high±voltage
components and cables because of the danger of
electrocution. If you need to touch them, do so only
after pulling the vehicle completely out of water.
(5) Check the HV battery and nearby area for any leak-
age of the electrolyte. Do not touch any leaking liq-
uid because it could be the highly alkaline electro-
lyte. If you need to wipe it off (using rags etc.), do so
only after completing the following procedure: wear
the rubber gloves and goggles, neutralize the elec-
trolyte with saturated boric acid solution, and finally
apply a red litmus paper to make sure that it does
not turn blue.
± INTRODUCTIONFOR ALL OF VEHICLES
IN±19
19 Author: Date:
2001 PRIUS (RM778U)
(d) Actions required after moving the damaged vehicle
If you see any liquid on the road surface, it could be the leakage
of the highly alkaline electrolyte.
Wearing rubber gloves and goggles, apply a red litmus paper
to the liquid. If the litmus paper turns blue, neutralize the liquid
using the saturated boric acid solution and reapply a red litmus
paper to make sure that it does not turn blue. Then wipe the liq-
uid off from the road surface using waste rags, etc.
(e) Items to be prepared (When repairing damaged vehicles)
Protective clothing (Insulated gloves, rubber
gloves, goggles, and safety shoes)
Saturated boric acid solution 20 L (Procure 800 g of
boric acid powder, put it into a container, and dis-
solve it in water.)
Red litmus paper
Waste rags or old towels (For wiping off the electro-
lyte)
Vinyl tape (For insulating cable)
Electrical tester
(f) Precautions to be observed when servicing the damaged
vehicle:
(1) Wear insulated or rubber gloves, goggles, and safe-
ty shoes.
(2) Do not touch a bare cable that could be a high±volt-
age cable. If you need to touch it, or if you have a
danger of making an accidental contact, wear insu-
lated gloves, measure the voltage between the
cable and the body ground using an electrical tes-
ter, and insulate the cable using a vinyl tape.
(3) Check the HV battery and nearby area for leakage.
If you find any liquid, it could be the leakage of the
highly alkaline electrolyte. Wear rubber gloves and
goggles, and then apply a red litmus paper to the
leak. If the litmus paper turns blue, neutralize the liq-
uid using the saturated boric acid solution and reap-
ply a red litmus paper to make sure that it does not
turn blue. Then wipe the liquid off using waste rags
etc.
(4) If the electrolyte adheres to your skin, wash the skin
immediately using the saturated boric acid solution
or large amounts of water. If the electrolyte adheres
to an article of clothing, take it off immediately.
(5) If the electrolyte comes into contact with your eyes,
call out loudly for help. Do not rub your eyes but
wash them with the saturated boric acid solution or
large amounts of water and seek medical care.
SA20C±01
N00191
F12937
Type A:
Type B:
R11817
Matchmarks
N00194
Matchmarks
± SUSPENSION AND AXLEFRONT DRIVE SHAFT
SA±19
2001 PRIUS (RM778U)
DISASSEMBLY
1. CHECK DRIVE SHAFT
(a) Check to see that there is no remarkable play in the out-
board joint.
(b) Check to see that the inboard joint slides smoothly in the
thrust direction.
(c) Check to see that there is no remarkable play in the radial
direction of the inboard joint.
(d) Check the boots for damage.
(e) Check the shape of the boot clamp.
2. REMOVE INBOARD JOINT SHAFT
(a) Using a screwdriver, disclamp the 2 inboard joint boot
clamps.
(b) Slide the inboard joint boot toward the outboard joint.
(c) Place matchmarks on the inboard joint shaft and tripod.
NOTICE:
Do not punch the marks.
(d) Remove the inboard joint shaft from the outboard joint
shaft.
3. REMOVE TRIPOD
(a) Using a snap ring expander, remove the snap ring.
(b) Place matchmarks on the outboard joint shaft and tripod.
NOTICE:
Do not punch the marks.
(c) Using a brass bar and hammer, tap out the tripod from the
outboard joint shaft.
NOTICE:
Do not tap the roller.
4. REMOVE INBOARD JOINT BOOT AND 2 CLAMPS
5. RH drive shaft:
REMOVE DYNAMIC DAMPER
(a) Type A clamp:
Using a screwdriver, disclamp the dynamic damper clamp
and remove it.
SA20D±01
SA1459
W01994
Vinyl Tape
± SUSPENSION AND AXLEFRONT DRIVE SHAFT
SA±21
2001 PRIUS (RM778U)
REASSEMBLY
1. INSTALL DUST COVER
Using a press, install a new dust cover to the inboard joint shaft.
2. TEMPORARILY INSTALL BOOTS, CLAMPS AND DY-
NAMIC DAMPER (RH DRIVE SHAFT)
HINT:
Before installing the boots (and dynamic damper), wrap the
spline of the outboard joint shaft with vinyl tape to prevent them
from being damaged.
(a) Place either 2 new A or B type boot clamps on a new out-
board joint boot and install them to the outboard joint
shaft.
(b) RH drive shaft:
Place either a new A or B type clamp on the dynamic
damper and install them to the outboard joint shaft.
HINT:
For B type only, the used clamp can be employed.
(c) Place 2 new clamps on a new inboard joint boot and install
them to the outboard joint shaft.
3. INSTALL TRIPOD
(a) Place the beveled side of the tripod axial spline toward the
outboard joint.
(b) Align the matchmarks placed before removal.
(c) Using a brass bar and hammer, tap in the tripod to the out-
board joint shaft.
NOTICE:
Do not tap the roller.
(d) Using a snap ring expander, install a new snap ring.
4. INSTALL BOOT TO OUTBOARD JOINT
Before assembling the boot, pack the outboard joint and boot
with grease in the boot kit.
Grease capacity: (Color = Yellow ocher)
110 ± 120 g (3.9 ± 4.2 oz.)
5. INSTALL INBOARD JOINT SHAFT TO OUTBOARD
JOINT SHAFT
(a) Pack the inboard joint and boot with grease in the boot kit.
Grease capacity: (Color = Yellow ocher)
180 ± 190 g (6.3 ± 6.7 oz.)
(b) Align the matchmarks placed before removal.
(c) Install the inboard joint shaft to the outboard joint shaft.
(d) Temporarily install the boot to the inboard joint shaft.
6. ASSEMBLE BOOT CLAMPS TO BOTH BOOTS
(a) Make sure that the 2 boots are on the shaft grooves.