400 Series Hose Ends Installation Guide

Speedflow 400 Series Hose Ends - Installation Guide & Checklist

Before You Install - Pre-Installation Checklist

Print this checklist and verify each item before beginning installation:

☐ Parts Verification

  • Correct hose end angle for your application (30°, 45°, 60°, 90°, 120°, 180°)
  • Correct AN size matches your hose (-3AN, -4AN, -6AN, -8AN, -10AN, -12AN, etc.)
  • Speedflow 400, 332, or 598 Series compatible hose
  • Hose is cut to correct length with clean, square cuts
  • All fittings and adapters are present

☐ Tools & Supplies Ready

  • Sharp hose cutter or hacksaw with fine-tooth blade
  • Deburring tool or fine file
  • Clean rags or shop towels
  • Isopropyl alcohol or brake cleaner
  • Proper AN wrenches (not adjustable wrenches)
  • Safety glasses

☐ Workspace Preparation

  • Clean, well-lit work area
  • All components laid out and organized
  • Routing path planned and verified for clearances
  • Heat sources identified (keep hoses away from exhaust)
  • Sharp edges or abrasion points identified (use grommets/protection)

☐ Hose Preparation

  • Hose ends are cut square (90-degree angle)
  • No frayed braiding or damaged outer cover
  • Inner liner is not collapsed or damaged
  • Hose ends are deburred (inside and outside)
  • Hose interior cleaned with brake cleaner (blow dry)

Installation Steps - 400 Series Push-Lock Fittings

Step 1: Prepare the Hose

  1. Cut hose to required length using sharp hose cutter
  2. Ensure cut is perfectly square (90 degrees)
  3. Deburr inside and outside of hose end
  4. Clean hose interior with brake cleaner
  5. Blow out with compressed air and allow to dry

Step 2: Install the Fitting

  1. Lubricate hose end lightly with oil or assembly lube (optional but recommended)
  2. Push fitting into hose with firm, twisting motion
  3. Push until hose bottoms out against the fitting shoulder
  4. Verify hose is fully seated - you should see the step in the fitting covered by hose
  5. For larger sizes (-10AN and up), you may need to use a vice to push fitting in

Step 3: Verify Installation

  • Hose is pushed all the way onto fitting (no gap visible)
  • Braiding is not bunched up or distorted
  • Fitting rotates freely (swivel fittings only)
  • No visible damage to hose or fitting
  • Correct orientation for your routing

Step 4: Route and Connect

  1. Route hose following your planned path
  2. Avoid sharp bends (minimum 3x hose diameter bend radius)
  3. Keep hoses away from heat sources (minimum 50mm clearance from exhaust)
  4. Use hose separators to prevent chafing
  5. Connect to adapters or ports using proper AN wrenches
  6. Tighten to manufacturer specifications (typically 1/4 turn past finger-tight)

Torque Specifications

AN Hose End to Adapter/Port:

  • -3AN: 60-80 in-lbs (7-9 Nm)
  • -4AN: 80-100 in-lbs (9-11 Nm)
  • -6AN: 100-120 in-lbs (11-14 Nm)
  • -8AN: 120-150 in-lbs (14-17 Nm)
  • -10AN: 150-180 in-lbs (17-20 Nm)
  • -12AN and larger: 180-220 in-lbs (20-25 Nm)

Important: Do not over-tighten. AN fittings seal on the 37-degree flare, not the threads.

Post-Installation Checklist

☐ Visual Inspection

  • All hoses are fully seated on fittings
  • No kinks or sharp bends in hoses
  • Adequate clearance from heat sources
  • No contact with sharp edges or moving parts
  • Hose separators installed where needed
  • All connections are tight (use two wrenches)

☐ Leak Testing

  • System pressurized to operating pressure
  • All connections inspected for leaks
  • No weeping or seepage at fittings
  • Pressure held for minimum 5 minutes
  • Re-check all connections after first heat cycle

☐ Final Verification

  • Hoses secured with proper clamps/separators
  • Adequate clearance maintained during suspension travel (if applicable)
  • No interference with steering or other moving components
  • System tested under operating conditions
  • All tools and materials removed from work area

Common Installation Mistakes to Avoid

  • ❌ Using adjustable wrenches - Use proper AN wrenches to avoid damaging fittings
  • ❌ Over-tightening - AN fittings seal on the flare, not the threads
  • ❌ Cutting hose at an angle - Always cut square for proper seating
  • ❌ Not deburring hose ends - Burrs prevent proper seating and can damage seals
  • ❌ Routing too close to heat - Maintain minimum 50mm clearance from exhaust
  • ❌ Sharp bends - Respect minimum bend radius (3x hose diameter)
  • ❌ Skipping leak test - Always pressure test before final installation

Troubleshooting

Fitting won't push into hose:

  • Verify correct hose series (400, 332, or 598)
  • Check hose is cut square and deburred
  • Lubricate hose end lightly
  • Use vice for larger sizes

Leak at connection:

  • Check fitting is fully seated on hose
  • Verify proper torque (don't over-tighten)
  • Inspect flare for damage
  • Replace O-ring if applicable

Hose kinked or restricted:

  • Increase bend radius
  • Use different angle fitting
  • Re-route to avoid sharp bends

Need Help?

Technical Support:
Call Scott at SS Racetech Rods & Customs
📞 0417 391 414
📧 sales@racereadygear.com.au

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