W 250 Pickup V8-5.9L VIN Z (1991)
Fig. 13 Dust Boot Installation
6. Position the dust boot in the counterbore. Using a hammer and Tool C-4690 with handle C-4171, or equivalent, drive the boot onto the
counterbore.
CAUTION: Force must be applied uniformly to avoid cocking.
7. Install brake hose to caliper using new seal washers.
NOTE: Before installing caliper assembly on vehicle, inspect braking disc runout and thickness.
Bendix Disc System 8 Lug Wheels
Cleaning and Inspection
1. Use a wire brush to clean all rust and corrosion from the machined surfaces of the caliper housing.
CAUTION: Do not use wire brush in cylinder bore).
2. Clean all parts using denatured alcohol and blow dry with clean -- oil free -- air.
3. Blow out all drilled passages.
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Be sure that the cylinder bore is free of foreign matter and corrosion, especially in the seal area.
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If corrosion is present in the boot or seal groove, use a fiber brush to remove it.
4. Inspect the cylinder bore, seal and boot groove and the piston for damage or excessive wear.
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Replace the piston if it is pitted, scored or the plating is severely worn.
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Bores that show light scratches or corrosion can usually be cleaned with crocus cloth.
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Bores that have deep scratches or scoring should be honed, providing the diameter of the bore is not increased more than 0.002 inch
(0.050mm).
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If the bore does not clean up within this specification, a new caliper housing should be installed.
NOTE: Black stains on the piston are caused by piston seal and will do no harm.
5. Use a wire brush to remove any rust or corrosion from the machined surfaces of the adaptor.
6. Inspect and clean the shoe anti-rattle spring, caliper support spring and caliper support key.
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Replace if damaged.
