Perkins 1106 — Gear Group (Front) - Remove and Install
Repair & overhaul · Front gear group
For the Perkins 1106, from the Perkins service manual.
Applies to: Perkins 1106, Perkins 1106D engine
Before you start
- Failure to fully unscrew adjusters can cause valve-to-piston contact
Procedure
- Ensure number one piston is at top dead center on compression stroke.
- Install camshaft timing pin; lock the camshaft.
- Install crankshaft timing pin; lock the crankshaft.
- Loosen nuts on all rocker arms; unscrew adjusters until all valves fully closed.
- Remove backlash on fuel injection pump gear; lock the fuel injection pump.
- Mark gears (1), (2) and (3) to show alignment.
- Remove fuel pump gear, camshaft gear and idler gear as required.
- On installation, install camshaft gear and loosely install bolt and washer.
- Install idler gear ensuring timing marks align; tighten camshaft gear bolt to 95 N·m.
- Install fuel injection pump gear ensuring timing marks align.
- Remove timing pins; install plug to cylinder block.
- Check backlash of all gears.
- Lubricate each gear with clean engine oil.
- Adjust engine valve lash.
Tools required
- 21825576 Crankshaft Turning Tool Amazon
- 27610212 Camshaft Timing Pin Amazon
- 27610286 Crankshaft Timing Pin Amazon
- 27610287 Adapter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 95 N·m (70 lb ft) camshaft gear bolt
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.