BENDIX BW1576 Manuale Utente Scaricare il pdf (Pagina 4)

DISASSEMBLY

Block the wheels and drain the air brake system. Remove

air lines and remove manifold from vehicle.

Remove the large cap nut at port No. 1 and remove the

double check shuttle.

Remove the four machine screws from the PR-4

™

valve cover.

(Caution - the cover is spring loaded.) Remove the PR-4

™

valve piston assembly. Do not attempt to remove the retaining

ring and stem from the piston.

ASSEMBLY

Before assembly, lubricate all o-rings, bores and mating

surfaces with BW-650M lubricant pc. no. 291126 (Dow

Corning 55M). Replace any worn or deteriorated o-rings and

shuttle, item 2 in Fig. 5, if necessary.

Install shuttle in guide in body and install cap nut

After cleaning and lubricating, assemble the PR-4

™

valve

section, replacing o-ring item 3 and inlet exhaust valve item

4 in Fig. 6 as required.

Replace valve on vehicle and check per operating and

leakage tests.

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BENDIX BW1576 Manuale Utente Pagina 4