Sienna LE V6-3.0L (1MZ-FE) (1998)
4. Place cylinder in vise.
5. Remove piston stopper bolt.
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Using a screwdriver, push the pistons in all the way and remove the piston stopper bolt and gasket.
HINT: Tape the screwdriver tip before use.
Torque: 10 Nm (7 ft. lbs.)
6. Remove pistons.
a. Push in the piston with a screwdriver and remove the snap ring with snap ring pliers.
HINT: Tape the screwdriver tip before use.
b. Remove the No.1 piston and spring by hand, pulling straight out, not at an angle.
NOTICE:
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If pulled out and installed at an angle, there is a possibility that the cylinder bore could be damaged.
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At the time of reassembly, be careful not to damage the rubber lips on the pistons.
c. Place a rag and 2 wooden blocks on the work table and lightly tap the cylinder flange against the block edges until the piston drops out of the
cylinder.
HINT: Make sure the distance A) from the rag to the top of the blocks is at least 100 mm (3.94 inch).
INSPECTION
HINT: Clean the disassembled parts with compressed air.
1. Inspect cylinder bore for rust or scoring.
2. Inspect cylinder for wear or damage.
If necessary, clean or replace the cylinder.
REASSEMBLY
Reassembly is in the reverse order of disassembly.