Caterpillar 3406C Marine Engine — Assemble Turbocharger
Repair & overhaul
For the Caterpillar 3406C Marine Engine, from the Caterpillar service manual.
Applies to: Caterpillar 3406C engine
Before you start
- Compressor wheel and turbine wheel have sharp edges and can cause personal injury if not handled carefully.
Procedure
- Make sure all oil passages in the cartridge housing are clean; put clean engine oil on all parts.
- Install bearing (2) in the cartridge housing, and use Tool (A) to install ring (1).
- Turn the cartridge assembly over; install bearing (4), and install ring (3) with Tool (A).
- Install ring (7), sleeve (6) and bearing (5) in the cartridge housing.
- Install ring (9) and deflector (8) in the cartridge housing.
- Install O-ring seal (12) around insert (11); put high vacuum grease on the seal ring.
- Install sleeve (10) in insert (11), install insert, and install the ring with Tool (B).
- Install seal ring (15) and shroud (13) on turbine shaft (14).
- Install the cartridge housing on the turbine shaft; make sure seal ring (15) is fitted correctly.
- Install compressor wheel (16); install the nut, and tighten to 60 ± 3 N·m.
- Check shaft end play: 0.114 ± 0.038 mm new (0.20 mm maximum worn).
- Install the turbine housing; align marks; install V-clamp and tighten to 13.6 ± 1.1 N·m.
- Install the compressor housing and V-clamp; tighten to 13.6 ± 1.1 N·m.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 60 ± 3 N·m (44 ± 2 lb ft)
- 13.6 ± 1.1 N·m (120 ± 10 lb in)
- shaft end play 0.114 ± 0.038 mm
Full service-parts list: Caterpillar 3406C engine →
Source: Caterpillar 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.