Ford — Racine Proportional Air Gap Adjustment
Adjustments · Racine proportional valve
From a Ford service manual — check it applies to your exact model before use.
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Before you start
- All parts must be clean and properly assembled before making these checks.
Procedure
- With all parts assembled, use a depth mike to measure distance from end of guide tube to exposed end of plunger; record dimension.
- Remove plunger and poppet; install plunger and check distance from end of guide tube to exposed end of plunger.
- Subtract the first dimension from the second; this is the amount of air gap.
- Correct air gap is .018"-.020" with .018" preferred.
- If excessive, lightly tap end of plunger with a brass drift and hammer; recheck air gap.
- If air gap is less than recommended, replace nose cone assembly.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- .018"-.020" air gap
- .018" preferred
Source: Ford 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.