Detroit Diesel — Installation of the DD15 & DD16 Water Manifold
Installation
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Lubricate the connecting pipe with clean oil. Do not use sealant when installing water manifold to the cylinder head.
Procedure
- Install water manifold gaskets and connecting pipe onto the water manifold.
- Install six lower water manifold bolts and start by a few threads.
- Install water manifold onto cylinder head.
- Install eleven upper water manifold bolts.
- Torque the water manifold bolts to 30 N·m using the torque sequence.
- Install EGR cooler to water manifold and torque to 20 N·m.
- Install coolant outlet elbow with four bolts and torque to 30 N·m.
- Install upper radiator hose and EGR actuator coolant outlet line (35 N·m).
- Connect outlet coolant temperature sensor and EGR cooler vent line.
- Connect doser coolant lines and torque to 15 N·m.
- Install EGR hot pipe, exhaust manifold heat shields, and air cleaner.
- Fill engine with coolant; start engine and check for leaks.
Specs & values
- Water manifold bolts: 30 N·m (22 lb·ft)
- EGR cooler to water manifold: 20 N·m (15 lb·ft)
- Coolant outlet elbow bolts: 30 N·m (22 lb·ft)
- EGR actuator coolant outlet line: 35 N·m (26 lb·ft)
- Doser coolant lines: 15 N·m (11 lb·ft)
Source: Detroit Diesel service 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.