Allis-Chalmers — Installing Cylinder Heads
Repair & overhaul
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
Procedure
- Clean top deck of cylinder block and underside of cylinder heads.
- Check cylinder sleeve protrusion: 0.002-0.005 in (0.05-0.13 mm) for current head gaskets with no more than 0.003 in difference under one head.
- Install head gaskets in correct front or rear position with indicated side down; do not use sealer.
- Install fire rings on each cylinder sleeve.
- Install front and rear cylinder heads.
- Lubricate fastener threads and undersides with engine oil and install fasteners.
- Tighten fasteners in numerical sequence to 1/2 final recommended torque.
- Tighten fasteners in sequence to full recommended torque.
- Retighten fasteners in sequence to full recommended torque.
- Run engine to minimum 160 F and retighten fasteners to full torque in sequence (not required with current head gaskets).
- Adjust valve lash.
- Tighten rocker cover nuts to 10-15 lb-ft (14-20 Nm).
Tools required
- Flank Drive 3/4 in - 12 point socket Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Engines with studs and nuts: 1/2 in - 100 lb-ft (136 Nm); 5/8 in - 185 lb-ft (251 Nm)
- Engines with capscrews: 1/2 in - 115 lb-ft (156 Nm); 5/8 in - 185 lb-ft (251 Nm)
- Rocker cover nut 10-15 FridayParts $30.67 lb-ft (14-20 Amazon eBay FridayParts $49.99 Nm)
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.