CATBrake Parts

7J7235 Valve Gp-Relay — Cat 615 615c

This relay valve group is a critical control component within the braking system, regulating air pressure to activate or release the brakes. It is manufactured to precise tolerances for reliable and responsive air modulation, unlike a worn or malfunctioning valve that may stick, leak, or provide inconsistent pressure. Operators may experience delayed brake application, reduced braking force, or the brakes failing to release when this valve group is not functioning correctly.

Valve Gp-Relay – Part No 7J7235 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBrake Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Always replace brakes in axle sets. Bed-in new brake pads with 8–10 moderate stops from 40 km/h. Check disc runout with a dial gauge — maximum 0.1 mm. Inspect caliper slides and pistons when replacing pads.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeRelay Valve
MaterialAluminum alloy and rubber seals
ApplicationAir brake system
Service LifeReplace based on inspection and performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Delayed or weak brake application is an initial sign that the relay valve may be failing, potentially increasing stopping distances. If the valve sticks open or closed, it can lead to continuous brake application or a complete loss of braking capability on the affected axle. Failure of the relay valve can compromise the overall safety and control of the equipment.

Installation Tip

Ensure all air lines are properly connected and securely fastened to prevent air leaks. Do not overtighten the mounting bolts, as this can distort the valve body.

Service Note

Inspect all air lines, brake chambers, and the air compressor governor when replacing the relay valve group.