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6 Piston Dust Excluder removal and replacement
A - Piston Dust Excluder removal
Remove the brake pads as described in section 2 "Pad
replacement".
Using the manual override stem adjust out the piston assemblies
approximately 50 mm. - Figs.35 & 36
Adjusting out the brake aids removal of the Piston Dust Excluders.
Remove the piston dust excluders.
Clean the Piston Heads (7) and housing retainers with a suitable
brake cleaner, or clear methylated spirits.
It is not necessary to remove the Piston Heads to carryout this
work.
Check for damage to both areas.
Check condition of pistons shafts. If excessive corrosion or wear
is present, the housing assembly or brake assembly should be
replaced as described in section 5 "Housing Replacement" or
section 3 "Brake replacement".
B - Fitting new Piston Dust Excluders
Lightly lubricate the piston shafts with grease supplied in kit.
WARNING
Only use the grease supplied with the replacement
components/kits. Under no circumstances should any other
type of grease be used
WARNING
When fitting new Piston Excluders, do not use any grease to
aid assembly. Hands should be clean and free from grease.
To disregard this instruction may cause premature failure of
piston excluders.
Carefully feed one of the new piston dust excluders over a Piston
Head (7). Fig. 37
Do not at this stage fit the excluder bead into the retaining groove
in the Brake housing.
32
ArvinMeritor Air Disc Brake ELSA 195
Fig. 35
Fig. 36
Fig. 37
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