Caterpillar — STOR Plug Assembly application for disc brake piston retainer spring (174-5354)
Repair & overhaul · ADT disc brake piston retainer spring
From a Caterpillar manual covering: 3304, 561C, 623E, 623H, 725, 735, 740, 740B Ejector, 773, 793, 977H, CX31…. Check it applies to your exact model before use.
Applies to: Caterpillar 3304, Caterpillar 725, Caterpillar 735, Caterpillar 740, Caterpillar 773, Caterpillar 793
Procedure
- Insert four 134-2562 Guides and discontinued 130-8718 Springs as an assembly into brake group anchor exterior holes where 9S-9334 Plugs are normally located.
- Insert four 174-5354 Plug Assemblies into exterior holes and finger tighten.
- Screw in attached bolts until guide noses protrude through brake piston.
- Insert discontinued 6N-9155 Pin into each guide hole and remove bolts and plugs.
- Insert four 9S-9334 Plugs into vacated holes.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Caterpillar 3304 →, Caterpillar 725 →, Caterpillar 740 →
Source: Caterpillar manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.