We've had a slow leak in our 98 DSDP air system since we bought it 1.5 yrs ago. I've looked for leaks with soapy water without success.
5 mths ago I put repair kit #DQ6026($120) in the Haldex Pure air plus air dryer. This kit includes the Desiccant canister and coalescing filter.This week I decided to put in lower overhaul kit #DQ6020($42) that includes: the turbo saver valve, purge valve, and outlet relief valve. LEAK GONE! The system has lost only 10 Lbs in the last 24 hrs. The turbo saver valve was deteriated and the one-way check valve was installed backwards?
I had to pull the dryer out of the coach to install the overhaul kit.
Linear Mode
