Scania R-Series
Scania R-Series (DC13 platform) is built to run a million kilometres — but injector cups, DPF regen logic and retarder oil all need disciplined attention.
What you'll notice
Tell-tale signs the Scania R-Series is asking for attention.
- Coolant loss with no visible external leak
- Failed or aborted DPF regens, soot warning on cluster
- Retarder performance drop or overheat warning
- Hard start and rough running cold
How we find the fault
- 1
SDP3 multiplexer scan
Pull EMS, COO, RET and APS fault history with timestamps.
- 2
Cylinder leak-down
Pressurise each cylinder to identify injector cup or head gasket leakage paths.
- 3
Forced DPF regen
Run service regen and monitor delta-P, exhaust temps and soot load behaviour.
- 4
Retarder oil & function test
Sample retarder oil, verify engagement pressure and cooling circuit flow.
What we fix on the Scania R-Series
Injector cup / sleeve replacement
Pull injectors, machine seat, fit new cups and pressure-test cylinder head.
DPF clean & differential sensor
Off-vehicle DPF bake, replace delta-P sensor and pipework as needed.
Retarder oil flush & seal kit
Drain, flush and refill retarder; replace seals where contamination has crossed circuits.
Common faults at a glance
Quick reference of the issues we see most on this platform.
- Injector cup leaks
- DPF regen failures
- Retarder oil contamination