Page 1513 of 1943
A13910
A13911
A13912
A13913
A13914
± ENGINE MECHANICALENGINE UNIT
EM±55
2001 PRIUS (RM778U)
23. DISCONNECT TIE ROD END FROM STEERING
KNUCKLE (See page SA±9)
24. DISCONNECT STABILIZER BAR LINK
Remove the nut and disconnect the stabilizer bar link from the
suspension member.
25. DISCONNECT BALL JOINT FROM LOWER ARM
Remove the 2 bolts and 4 nuts, disconnect the ball joint.
26. REMOVE DRIVE SHAFTS (See page SA±17)
27. REMOVE TORQUE ROD
Remove the 4 bolts and 2 nuts and torque rod from the body.
28. REMOVE SUSPENSION MEMBER
Remove the 4 bolts and disconnect the suspension member
from the body.
29. SET ENGINE JACK
NOTICE:
Using chain, hold the engine tightly.
30. DISCONNECT ENGINE MOUNTINGS
(a) Remove the 2 bolts, 2 nuts and disconnect the RH engine
mounting insulator from the bracket.
Page 1514 of 1943
A13915
A13916
A13917
SST
SST
A13918
SST SST
EM±56
± ENGINE MECHANICALENGINE UNIT
2001 PRIUS (RM778U)
(b) Remove the nut and disconnect the LH engine mounting
from the insulator.
31. REMOVE ENGINE AND TRANSAXLE ASSEMBLY
(a) Lower the engine out of vehicle slowly and carefully.
NOTICE:
Make sure the engine is clear of all wiring, hoses and
cables.
(b) Using a engine sliding device, and place the engine and
transaxle assembly onto the stand.
32. SEPARATE ENGINE AND TRANSAXLE
(a) Remove the 2 bolts and dust cover.
(b) Remove the 6 bolts and transaxle from the engine.
33. REMOVE DAMPER DISC
Using SST, hold the crankshaft pulley, remove the 6 bolts and
damper disc and spring.
SST 09213±58012 (91111±580845), 09330±00021
34. REMOVE FLYWHEEL
Using SST, hold the crankshaft pulley, remove the 6 bolts and
flywheel.
SST 09213±58012 (91111±580845), 09330±00021
Page 1515 of 1943

EM1J2±02
P08755
A13917
SSTSST
1
2
3
4
6
5
A13940
SST
A13917
SSTSST
1
2
3
4
6
5
EM±58
± ENGINE MECHANICALENGINE UNIT
2001 PRIUS (RM778U)
INSTALLATION
1. INSTALL FLYWHEEL
(a) Apply adhesive to 2 or 3 threads of the bolt end.
Adhesive: Part No. 08833±00070, THREE BOND 1324
or equivalent
(b) Install and uniformly tighten the new 6 bolts in several
passes, in the sequence shown.
Torque: 84 N´m (857 kgf´cm, 62 ft´lbf)
(c) Retighten the flywheel bolts by 90° in the numerical order
shown.
2. INSTALL DAMPER DISC
(a) Insert SST in the damper disc, then insert them in the fly-
wheel.
SST 09301±00110
HINT:
Take care not to insert damper disc in the wrong direction.
(b) Set the damper spring on the damper disc.
(c) Following the procedures shown in the illustration, tighten
the 6 bolts in the order starting the bolt locating near the
knock pin on the top.
Torque: 16 N´m (163 kgf´cm, 12 ft´lbf)
HINT:
Following the order in the illustration, tighten the bolts at
a time evenly.
Move SST up and down, right and left lightly, after check-
ing that the disc in the center, tighten the bolts.
3. INSTALL TRANSAXLE TO ENGINE
(a) Attach the transaxle to the engine, and install the 6 bolts.
Torque: 33 N´m (337 kgf´cm, 24 ft´lbf)
(b) Install the dust cover.
(c) Install the LH engine mounting bracket.
Torque: 52 N´m (530 kgf´cm, 38 ft´lbf)
Page 1516 of 1943

A13913
A13914
A13912
AB
B
A
A13911
A13910
± ENGINE MECHANICALENGINE UNIT
EM±59
2001 PRIUS (RM778U)
4. SET ENGINE JACK
NOTICE:
Using a chain, hold the engine tightly.
5. INSTALL ENGINE AND TRANSAXLE ASSEMBLY IN
VEHICLE
(a) Raise the engine into the engine compartment.
(b) Keep the engine level, and align RH and LH mountings
with the insulator.
(c) Connect the LH mounting bracket to the insulator with the
nut.
Torque: 80 N´m (816 kgf´cm, 59 ft´lbf)
(d) Connect the RH mounting bracket to the insulator with the
2 bolts and 2 nuts.
Torque: 52 N´m (530 kgf´cm, 38 ft´lbf)
6. INSTALL SUSPENSION MEMBER
Connect the suspension member with the 4 bolts.
Torque:
Bolt A: 113 N´m (1,152 kgf´cm, 83 ft´lbf)
Bolt B: 157 N´m (1,601 kgf´cm, 116 ft´lbf)
7. INSTALL TORQUE ROD
(a) Install the torque rod through bolt and nut.
Torque: 100 N´m (1,020 kgf´cm, 74 ft´lbf)
(b) Install the 2 bolts.
Torque: 60 N´m (612 kgf´cm, 44 ft´lbf)
8. INSTALL DRIVE SHAFTS (See page SA±23)
9. CONNECT BALL JOINT TO LOWER ARM
Torque: 142 N´m (1,448 kgf´cm, 105 ft´lbf)
10. CONNECT STABILIZER BAR LINK
Torque: 74 N´m (755 kgf´cm, 55 ft´lbf)
11. CONNECT TIE ROD END TO STEERING KNUCKLE
(See page SA±14)
Page 1517 of 1943

A13939
I18009
A13909
A13938
EM±60
± ENGINE MECHANICALENGINE UNIT
2001 PRIUS (RM778U)
12. INSTALL EXHAUST PIPE
(a) Install the 2 gaskets to the exhaust pipe and connect the
2 O±rings.
(b) Install the 2 springs and 3 bolts.
Torque:
Front exhaust pipe: 62 N´m (630 kgf´cm, 46 ft´lbf)
Tailpipe: 32 N´m (326 kgf´cm, 24 ft´lbf)
(c) Connect the hose to the actuator.
(d) Connect the heated oxygen sensor.
13. INSTALL A/C COMPRESSER
(a) Connect the A/C compresser to the engine with the 4
bolts.
Torque: 25 N´m (255 kgf´cm, 18 ft´lbf)
(b) Connect the A/C compresser connector.
14. CONNECT INTERMEDIATE EXTENSION STEERING
ASSEMBLY (See page SR±14)
15. INSTALL DRIVE BELT (See page SA±23)
16. CONNECT FUEL TUBE
17. INSTALL J/B NO. 1 TO RH FENDER APRON
18. CONNECT ENGINE WIRE TO CABIN
(a) Pull in the engine wire to the cowk panel and connect the
grommet.
(b) Connect the ECM connectors.
(c) Install the ECM (See page SF±63).
19. INSTALL BRAKE RESERVOIR TANK
(a) Install the reservoir tank with the 2 bolts.
(b) Connect the brake fluid level sensor connector.
20. CONNECT SHIFT LEVER CABLE TO TRANSAXLE
21. CONNECT HEATER HOSE TO CYLINDER BLOCK
22. CONNECT 2 RADIATOR HOSES TO RADIATOR
23. INSTALL ENGINE COOLANT RESERVOIR TANK
24. INSTALL AIR INLET
Page 1518 of 1943

A13943
A13907
± ENGINE MECHANICALENGINE UNIT
EM±61
2001 PRIUS (RM778U)
25. CONNECT CONNECTORS, CLAMPS AND HOSES
(a) Connect the Ground strap from LH fender apron.
(b) Connect the Ground strap from RH fender apron.
(c) Connect the VSV hose for purge line.
(d) Connect the VSV connector for purge line.
(e) Connect the 2 power steering connectors.
(f) Connect the Heated oxygen sensor connector.
(g) Connect the Engine wire clamps.
26. INSTALL AIR CLEANER ASSEMBLY
(a) Install the air cleaner assembly with the 2 bolts.
(b) Tighten the 2 hose clamps.
(c) Connect the EVAP hose to the air cleaner case.
(d) Connect the MAF meter connector.
27. INSTALL HEATER UNIT WATER PUMP
(See page AC±55)
28. INSTALL CONVERTER AND INVERTER ASSEMBLY
(See page HV±22)
29. INSTALL OUTER FR COWL TOP PANEL ASSEMBLY
(See page BO±35)
30. FILL WITH ENGINE COOLANT
31. FILL WITH HV COOLANT
32. INSTALL ENGINE UNDER COVERS
33. CONNECT BATTERY NEGATIVE (±) TERMINAL AND
HV BATTERY SERVICE PLUG (See page HV±1)
34. ROAD TEST VEHICLE
Check for abnormal noiss, shock slippage, correct shift points
and smooth operation.
35. RECHECK ENGINE COOLANT AND HV TRANSAXLE
COOLANT
Page 1519 of 1943
EM17B±02
A11250
Water Bypass Pipe
Knock Sensor
Thermostat
Water Inlet Engine Coolant
Drain Union
N´m(kgf´cm, ft´lbf) : Specified torque
Non±reusable part
Precoated part
Gasket
GasketOil Pressure
Switch
9.0 (90, 80 in.´lbf)
9.0 (90, 80 in.´lbf)
9.0 (90. 80 in.´lbf)
9.0 (90, 80 in.´lbf)
EM±62
± ENGINE MECHANICALCYLINDER BLOCK
1178 Author: Date:
2001 PRIUS (RM778U)
CYLINDER BLOCK
COMPONENTS
Page 1520 of 1943
A14341
No.1 Compression Ring
No.2 Compression Ring
Oil Ring
PistonConnecting Rod
Connecting Rod Bearing
Crankshaft Rear Oil Seal
Lower Main Bearing Connecting Rod Cap
Cylinder Block
Upper Main Bearing
Crankshaft Thrust Washer
Crankshaft
Crankshaft Bearing Cap
GasketCrankshaft Thrust Washer
Oil Filter Union
Oil Filter
Oil Pan No.2
Oil strainer
11 (112, 8)38 (387, 28)
Piston Pin
30 (306, 22)
24 (245, 18)
N´m(kgf´cm, ft´lbf) : Specified torque
Non±reusable part
See page EM±78
x10
x10
O±ring
Gasket
O±ring
See page EM±78
1st 22 (220,16)
2nd Turn 90° 1st 15 (150,11)
2nd Turn 90°O±ring
Oil Pan No.1
9.0 (92, 80 in.´lbf)
± ENGINE MECHANICALCYLINDER BLOCK
EM±63
1179 Author: Date:
2001 PRIUS (RM778U)