Perkins 1106 — Crankshaft Main Bearings - Remove and Install (Crankshaft in position)
Repair & overhaul
For the Perkins 1106, from the Perkins service manual.
Applies to: Perkins 1106, Perkins 1106D engine
Before you start
- Complete removal/installation of each bearing pair before proceeding to the next
Procedure
- Lubricate and slide upper main bearing shell into position; ensure locating tab seated.
- For number six bearing, lubricate and slide thrust washers into position; seat locating tabs.
- Install lower main bearing shell into main bearing cap; seat locating tab.
- Lubricate journal and lower shell; install main bearing cap; ensure correct orientation.
- Lubricate bolt threads and undersides of heads.
- Install bolts; evenly tighten to pull cap into position.
- Tighten bolts to 80 N·m; turn an additional 90 degrees.
- Check crankshaft end play; permissible 0.10 mm to 0.41 mm.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 80 N·m (59 lb ft) plus 90 degrees
- crankshaft end play 0.10 to 0.41 mm
Full service-parts list: Perkins 1106 →, Perkins 1106D engine →
Source: Perkins 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.