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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 (Engine Controls - Remove/Install/Overhaul - 3.3L CNG) >> Fuel System >> Fuel Tubes & Fittings >> Installation (New Fittings)

Installation (New Fittings)

WARNING: This page is about a different car, the 1995 Plymouth Voyager and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.
  1. See SAFETY PRECAUTIONS  . Install tube into fitting assembly. See Fig 1 . Tighten fitting finger tight. Scribe a mark at 6 o'clock position on fitting. See Fig 2 .
  2. Using a wrench and a back-up wrench, tighten fitting 1 1/4 turns. Scribe mark should be at 9 o'clock position. See Fig 2 . Check fitting using go/no-go gauge. See Fig 3 . Fitting is properly tightened if go/no-go gauge does not fit between fitting and fitting body.
    CAUTION: DO NOT install go/no-go gauge to fitting while tightening; use gauge only for fitting check.
  3. If go/no-go gauge fits between fitting and fitting body after tightening fitting 1 1/4 turns, slowly continue to tighten fitting in small increments until gauge no longer fits. DO NOT overtighten fitting. Leak test fitting.
Fig 1: Exploded View Of Fuel Fitting (Caravan & Voyager)
G92G21697Courtesy of CHRYSLER CORP.
Fig 2: Tightening Fuel Fitting (Caravan & Voyager)
G92H21698Courtesy of CHRYSLER CORP.
Fig 3: Checking Fuel Fitting Using Go/No-Go Gauge (Caravan & Voyager)
G92I21699Courtesy of CHRYSLER CORP.
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