This guide walks through a professional, high-level procedure for using the ATC1897 / W470589062300 camshaft timing tool on newer Detroit Diesel DD13, DD15, DD16 and GHG17 engines built March 23, 2016 and later.

When to Use the ATC1897 Timing Tool

• Camshaft replacement on DD13/DD15/DD16 or GHG17 engines built March 23, 2016 or later.[web:1]
• Major engine overhaul or in-frame rebuild requiring timing verification.[web:1]
• Cylinder head removal where cam timing has been disturbed.[web:1]
• Timing complaints after prior incorrect service with old-style fixtures.[web:1]

Phase 1: Engine Identification & Preparation

1. Verify engine model (DD13, DD15, DD16 or GHG17) and build date, confirming March 23, 2016 or newer with updated timing components.[web:1]
2. Disconnect batteries and follow Detroit Diesel safety guidelines before working near the front gear train.
3. Remove any front covers, accessories, and components required by the OEM manual to access the camshaft and timing gears.
4. Rotate engine to the specified reference position (usually #1 cylinder at TDC on compression) using the crankshaft barring tool as directed by OEM procedures.

Phase 2: Installing the New-Style Cam Timing Tool

1. Inspect the ATC1897 / W470589062300 timing plate and spacer surfaces to ensure they are clean and free from damage.[web:1]
2. Position the camshaft to the OEM timing reference marks on the updated cam and idler gears, as specified in Detroit Diesel documentation.
3. Install the timing tool on the cylinder head or front housing using the designated locating points so the plate sits flush and square.
4. Engage the plate with the camshaft alignment features so that the cam is locked in the correct timing position for the updated design.

Phase 3: Timing Verification During Assembly

1. With the timing plate holding the camshaft, install or torque the camshaft gear, idler gear and related components according to OEM torque specs.
2. Re-check alignment between the camshaft gear marks and idler/crank gear marks to confirm that nothing shifted during tightening.
3. Verify that the timing plate still seats correctly and that the camshaft cannot move independently of the timing gear set while locked.
4. Only remove the timing tool once the cam gear fasteners are fully torqued and timing alignment has been visually confirmed.

Phase 4: Final Checks Before Start-Up

1. Rotate the engine by hand through at least two full crankshaft revolutions to confirm there is no mechanical interference and that valve timing feels normal.
2. Reinstall front covers, seals and accessories following Detroit Diesel service procedures.
3. Perform any required electronic calibrations or relearns if specified by OEM documentation after timing work.
4. On first start, monitor for abnormal noises, rough running, or timing-related fault codes and correct immediately if detected.