Winnebago 1987-1989 LeSharo Service Manual page 490

TIGHTENING TORQUES
Bleed screw
Metal pipe union on wheel
REAR WHEEL CYLINDERS
REMOVE AND REPLACE
0.7 daNm (5 Ib.lft.)
cylinder
2 daNm (15 Ib.lft.)
Wheel cylinder mounting bolts 0.7 daNm (5 Ib.lft.)
• Remove the brake drum and brake shoes then
check the wheel cylinders. The wheel cylinders
must show no signs of external leakage and the
pistons must slide easily with finger pressure.
• This check must be carried out:
• every 60,000 km (40,000 miles) or once every 3
years (whichever occurs first)
- each time the brake linings or shoes are
changed.
• If a defect is found, then both the left and right
rear wheel cylinders must be replaced. Wheel
cylinders may be overhauled if the bores and
pistons are completely free of scratches and
oxidation.
REMOVAL
• Unscrew metal pipe union (2) and mounting bolts
(1).
• Remove the wheel cylinder and its seal.
RE-INSTALLATION
• Stick the seal to the back of the wheel cylinder
with a dab of grease.
• Mount the cylinder and secure bolts (1).
• Torque tighten metal pipe union (2) followed by
bolts (1).
• Refit the brake shoes and drums then bleed the
circuit.
• Pressthe brake pedal several times to restore the
correct operating clearance between linings and
drum.
OVERHAULING
• Change all the components marked (*) routinely.
• Check the pistons and bore. The complete wheel
cylinder must be changed if any traces of scratches
are present.
• If the pistons and cylinder are serviceable, install
new cupwashers.
• Dip all moving parts in new clean brake fluid.
Assemble the pistons, spring and dust covers.
Check that the assembly slides freely. Mount clip
Fre. 05 astride the wheel cylinder to hold the
assemby together.
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