Allis-Chalmers — Testing and Adjusting Fuel Injection Nozzle
Adjustments
From a Allis-Chalmers owner's manual covering: 11000, 11000 MKIT, 11000MKII, T1Q00GMKII. Check it applies to your exact model before use.
Applies to: Allis-Chalmers 11000 / 11000MKII engine
Before you start
- Keep hands away from nozzle tip when popping a nozzle; atomized fuel can penetrate skin and cause blood poisoning.
Procedure
- Bolt or clamp nozzle tester base to work bench.
- Open tester valve, loosen filler cap, operate handle until fuel flows, then close valve.
- Connect nozzle holder to tester fuel line and place spray collector under nozzle.
- Operate handle with quick strokes and observe opening pressure on gauge.
- Loosen adjusting screw locknut; turn pressure adjusting screw IN to increase, OUT to decrease opening pressure.
- When specified pressure is obtained, hold adjusting screw and tighten locknut to 60 lb-ft (81 Nm).
- Dry nozzle tip and operate handle slowly to about 200 psi below opening pressure; observe for leakage.
- Operate handle at about 100 strokes per minute and observe the 4-hole spray pattern.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Adjusting screw locknut 60 lb-ft (81 Nm)
- Nozzle retaining nut 60 lb-ft (81 Nm)
- Opening pressure per Topic 2 Paragraph D
Full service-parts list: Allis-Chalmers 11000 / 11000MKII engine →
Source: Allis-Chalmers owner's 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.