CATERPILLAR DOZERS(CR4616,134-3952,6T3216)D6H/D6R idler ass'y/bulldozer idler factory in china

Product Specifications

CATERPILLAR DOZERS(CR4616,134-3952,6T3216)D6H/D6R  idler ass'y

Caterpillar D6R Idler Specifications

(Verify with your serial number at Cat Parts)

1. Model Compatibility

• Applies To:

  • D6R Series I/II/III (XL/LGP variants included)

  • Compatible with some D6N/D6T models (verify dimensions)

2. OEM Part Numbers

Configuration	Part Number	Notes
Standard Front Idler	8Y-7496	600mm track gauge
LGP Front Idler	242-7564	760mm wide
Rebuild Kit (Seals/Bearings)	6I-5995	Includes all wear parts

3. Technical Specifications

Parameter	Standard Idler	LGP Idler
Material	Cast Steel (SAE 4320)	Forged Steel (4140)
Weight	220 kg	280 kg
Width	520 mm	760 mm
Bearing Type	Tapered Roller	Double Tapered Roller
Grease Fittings	2 (90° opposed)	3 (120° spacing)
Load Capacity	15,000 kg static	18,000 kg static

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Wear Limits & Maintenance

• Flange Thickness:

  • New: 35 mm

  • Replace at: ≤18 mm

• Bearing Play:

  • Allowable: ≤1.8 mm radial

  • Critical: >2.5 mm

• Greasing:

  • Interval: Every 10 service hours

  • Grease Type: Cat Advanced 3M™ (or equivalent)

  • Volume: 400-500cc per fitting

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Visual Identification

1. OEM Markings:

   • Cast "CAT" logo + part number on flange

   • Yellow zinc-plated bolts (M24x3)

2. Aftermarket Versions:

   • Berco: Blue paint + "BERCO" stamped

   • ITR: Red oxide primer + laser etching

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Replacement Procedure

Tools Required:

• 1-1/4" impact socket (for mounting bolts)

• 50-ton jack + stand

• Track press (for chain removal)

Step-by-Step:

1. Release track tension (grease cylinder)

2. Remove master pin/chain (if needed)

3. Support idler with hoist

4. Unbolt (torque: 650-700 Nm for M24 bolts)

5. Inspect track frame bushings

6. Install new idler with anti-seize compound

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OEM vs Aftermarket Comparison

Factor	OEM (Cat)	Premium Aftermarket
Price	$3,200-$4,100	$2,100-$3,400
Lead Time	3-6 weeks	2-4 weeks
Warranty	12 months	6-12 months
Bearing Life	10,000-12,000 hrs	8,000-10,000 hrs
Seal Effectiveness	97%+	90-95%

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Recommended Suppliers

1. OEM:CQC-track/DPW-PARTS

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Troubleshooting Guide

Symptom	Root Cause	Solution
Track misalignment	Worn flanges	Replace idler
Grease leakage	Seal failure	Rebuild with 6I-5995 kit
Vibration	Bearing spalling	Immediate replacement
Idler not rotating	Rust seizure	Disassemble/clean

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Pro Tips

1. For LGP Models:

   • Use wider idler-specific grease tools

   • Check clearance to ripper mounts

2. Mining Applications:

   • Upgrade to "HD" idlers with thicker flanges

   • Increase greasing frequency to 5-8 hours

3. Storage:

   • Rotate stored idlers quarterly to prevent bearing brinelling

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Need Exact Part Verification?
Provide:

• Serial number (located on right frame rail)

• Current idler photos (show flange wear)

• Application (e.g., swamp, mining, demolition)

I can then supply:

• Exploded diagrams

• Local dealer contacts

• Cross-section wear measurements