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Home›Repair guides›Allis-Chalmers›Injection pump installation and timing

Allis-Chalmers — Injection pump installation and timing

Installation · Fuel injection pump

From a Allis-Chalmers operator's manual covering: 16000MKII, 17000MKII, 21000MKII, 25000MKII. Check it applies to your exact model before use.

Before you start

  • Do not rotate flywheel backward to line up pointer and timing mark.

Procedure

  1. Make certain No. 1 piston is on compression stroke.
  2. Remove timing hole cover; rotate crankshaft in normal direction until pointer aligns with correct degrees BTDC.
  3. Position FPI mark on pump coupling hub opposite pointer on injection pump.
  4. Install injection pump and coupling as assembly.
  5. Align FPI mark on coupling with pump pointer.
  6. Install pump mounting capscrews and tighten to 18-23 lb-ft.
  7. Install hub clamp capscrews and tighten to 45 lb-ft.
  8. Connect lube oil supply/drain, fuel lines, governor linkage, timing hole cover, and prime fuel system.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Pump mounting capscrews 18-23 Amazon eBay lb-ft
  • Hub clamp capscrews 45 lb-ft

Source: Allis-Chalmers operator'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.

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