John Deere – 1023E, 1025R and 1026R – Pressure Test Radiator Cap

[1] – Park machine safely.

[2] –

Check that cooling system is cool and squeeze top radiator hose to check that system pressure has dropped.

[3] – Remove radiator cap.

[4] – Install radiator cap on appropriate adapter.

[5] – Attach adapter to D05104ST pressure pump.

[6] – Apply pressure. Pressure valve in cap should open according to specifications.

If cap leaks, relieve pressure and retighten cap. Test again. Replace cap if pressure is not within specification.