Hino 600, Руководство по ремонту, Страница: 271 / 451

SERVICE BRAKE (HYDRAULIC BRAKE) BR02–27
(5) Place a block of wood (7-5/8 x 3-1/2 x 2-9/16-inches thick) between
the caliper pistons. Use a C-clamp to hold the block of wood against
the pistons on one side of the caliper.
! WARNING
When you use compressed air to remove the pistons form the caliper
bore, do not place your hands or fingers near the bore to catch or pro-
tect the pistons. Serious personal injury can result.
! CAUTION
When you remove the pistons from the caliper bore, only direct
enough compressed air into the caliper brake fluid inlet to ease the
pistons out of the bore. Do not exceed 25 psi (172 kPa). Damage to
components will result.
(6) Apply low air pressure (no more than 25 psi [172 kPa]) to the fluid port
in the caliper to move the caliper pistons out to the wood block.
(7) With the pistons in contact with the wood block, there will be a small
amount of seal engagement remaining. Remove the C-clamp and the
wood block. The pistons may now be removed by hand.
(8) To remove the pistons from the other side of the caliper, place the
block of wood now over the empty bores (from where the pistons
have been removed) with a thick sheet of rubber (3/8-inch) between
the wood and the caliper bores.
NOTICE
Use the C-clamp to hold the block of wood in position against the
empty bores. The C-clamp must be between the pistons on the oppo-
site side so they may move out to the wood block without striking the
C-clamp. Cover pistons with a shop rag to prevent brake fluid spray.
(9) Apply low air pressure (no more than 25 psi [172 kPa]) to the fluid port
in the caliper to move the caliper pistons out to the wood block.
(10) With the pistons in contact with the wood block, there will be a small
amount of seal engagement remaining. Remove the C-clamp and the
wood block. The pistons may now be removed by hand.
Wood
block
SAPH168010200040
Air
supply
SAPH168010200041
Caliper
piston
SAPH168010200042