Toyota Sienna Service Manual: Disassembly
1. REMOVE BRAKE MASTER LESS RESERVOIR TANK CYLINDER SUB-ASSEMBLY
(a) Using soft jaws on the vise, hold the brake master cylinder in a vise through aluminum plates.
(b) Using a screwdriver, remove the O-ring.
(c) Using SST, remove the brake tube from the brake master cylinder.
SST 09023-00101
(d) Remove the 2 nuts, 2 bolts and brake master less reservoir tank cylinder sub-assembly.
NOTICE:
- Pay due attention so as not to drop the No. 3 piston from the diameter converting unit. (if the No. 3 piston drops, it cannot be reused.)
- Pay due attention so as not to drop the No. 1 piston from the plunger master cylinder. (if the No. 1 piston drops, it cannot be reused.)
(e) Using a screwdriver, remove the 2 O-rings.
(f) Using a pin punch (φ 5 mm) and hammer, remove the pin.
(g) Remove the brake master cylinder union and 2 brake master cylinder union grommets.
Removal
NOTICE:
Do not adjust the brake booster push rod.
Do not change the combination of the diameter
converting unit and brake.
1. DRAIN BRAKE FLUID
NOTICE:
Wash the brake fluid off immediatel ...
Reassembly
1. INSTALL BRAKE MASTER LESS RESERVOIR TANK CYLINDER SUB-ASSEMBLY
(a) Apply lithium soap base glycol grease to the 2 brake
master cylinder union grommets and install them to
the brake master less r ...
Other materials:
Diagnosis system
1. CHECK DLC3
The vehicle uses ISO 15765-4 communication
protocol.
The terminal arrangement of the DLC3 complies
with SAE 1962 and matched the ISO 15765-4
format.
If the result is not as specified, the DLC3 may have
a malfunction. Repair or replace the harness and
connecto ...
On-vehicle inspection
1. INSPECT CURTAIN SHIELD AIRBAG ASSEMBLY
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the curtain shield airbag assembly installed on
the vehicle, perform a visual check. If there are any
defects as mentioned below, replace the front pillar
...
Reassembly
1. INSTALL 2ND BRAKE PISTON O-RING
(a) Coat 2 new O-rings with ATF, and install them in the
2nd brake piston.
NOTICE:
Make sure that the O-ring is not twisted or
pinched.
2. INSTALL 2ND BRAKE PISTON
(a) Coat the 2nd brake piston with ATF, and install it to
the 2nd brake cylinder.
NO ...
