Perkins 1106 — Electronic Unit Injector - Install
Repair & overhaul
For the Perkins 1106, from the Perkins service manual.
Applies to: Perkins 1106, Perkins 1106D engine
Before you start
- Failure to correctly seat ALL valve bridges will cause piston-to-valve interference and engine damage
Procedure
- Record injector calibration code before installation and program trim file into ECM.
- Use vacuum tube tool to remove any fuel from the cylinder.
- Ensure injector fuel inlet port is capped and injector is clean.
- Install new O-ring seal and sealing washer to the injector. Do not lubricate the O-ring seal.
- Ensure injector seat in cylinder head is clean and free from damage.
- Position clamp between rocker arm and valve springs; install injector aligned to bore; push firmly.
- Install new torx screw to clamp; tighten finger tight.
- Remove cap; install new seal flush with valve mechanism cover base.
- Remove plugs from new fuel injection line; loosely install line.
- Use T40 Torx socket to tighten torx screw to 27 N·m.
- Use injector pipe nut tool to tighten fuel injection line to 30 N·m.
- Install valve bridges to cylinder head, correctly seated.
- Seat pushrods and adjust valve lash.
- Install harness assembly; tighten connections to 2.4 N·m; tighten banjo bolt to 21 N·m.
- Install valve mechanism cover; restore supplies and prime fuel system.
Tools required
- 27610307 T40 Torx Socket Amazon
- GE50028 Vacuum Pump Amazon
- GE50030 Tube Amazon
- 27610294 Injector Pipe Nut Tool Amazon
- 27610296 Torque Wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 27 N·m (20 lb ft) torx screw
- 30 N·m (22 lb ft) line
- 2.4 N·m (21 lb in) connections
- 21 N·m (15 lb ft) banjo 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.