CAT 109-8047 7.7mm Thick Fan Drive Retainer

CAT 109-8047 is a Caterpillar original equipment engine valve cover/high-pressure fuel line clamp (stamped steel, used for positioning the valve cover and high-pressure fuel line of D-series engines, vibration-proof and anti-loosening). It is compatible with Cat C15/C18 engine valve covers, 3516B generator set high-pressure fuel lines, and 793D mining truck fuel injection systems. The following are Cat’s technical and application parameters:

Core Technical Parameters
Item Details
Basic Attributes
Model 109-8047, type is engine valve cover/high-pressure fuel line clamp (including clamp body + mounting bolts, compatible with Cat C15/C18 engine valve covers, 3516B generator set high-pressure fuel lines, 793D mining truck fuel injection systems, 992K loader fuel distribution pipes), material is clamp body (SAE 1010 steel plate stamping, galvanized and passivated surface), bolts (8.8… Made of high-grade alloy steel, anodized and blackened. Length 38.1 mm (1.5 inches, tolerance ±0.15 mm), width 12.7 mm (0.5 inches, tolerance ±0.10 mm), thickness 3.18 mm (0.125 inches, tolerance ±0.05 mm), hole diameter 6.7 mm (for M6 bolts, tolerance H8, +0.015/0 mm), single weight approximately 0.05 kg, rated clamping force ≥5 kN, operating temperature -40℃ to +150℃, vibration resistance IP67, installation torque 8-10 N・m.

Key Dimensions: Clamp opening (free state) 10.0 mm, (clamped state) 8.0 mm, bolt hole center distance 25.4 mm (1 inch, tolerance ±0.10 mm), clamp corner radius R2.0 mm, surface galvanized layer thickness ≥8 μm.

Material and Manufacturing Process: The clamp body is formed by stamping. Galvanized and passivated (salt spray resistance ≥96 hours), bolts are 8.8 grade alloy steel, with Phillips head (compatible with PH2 screwdriver), thread precision 6g, anti-loosening method is pre-coated thread locking adhesive (Loctite 243).
Compatible models: Cat C15/C18 engine (valve cover high-pressure fuel line fixing), 3516B generator set (fuel injection system high-pressure fuel line positioning), 793D mining truck (fuel distribution pipe vibration damping fixing), 992K loader (fuel injection system high-pressure fuel line clamp). Suitable operating conditions: engine speed ≤2500 rpm, vibration frequency ≤200 Hz, fuel line outer diameter 10-12 mm. Assembly and mating: Installed in the pre-set mounting holes on the valve cover/fuel distribution pipe, fixed with M6×12 bolts (torque 8-10 N・m), gap between clamp and fuel line 0.2-0.5 mm. mm. After installation, check that the oil pipe is not twisted, the retaining clamp is not interfered with, and the anti-loosening marks are aligned.

Installation and Maintenance Points:

Before installation, clean the retaining clamp and mounting surface, check that the retaining clamp is not deformed, the bolts are not damaged, the threads of the valve cover mounting hole are not stripped, and the surface of the high-pressure oil pipe is free of scratches/dents.

During assembly, align the retaining clamp jaws with the oil pipe and tighten the M6 ​​bolts with a torque wrench to 8-10 N·m, ensuring that the jaws fit evenly with the oil pipe. Avoid overtightening to prevent damage to the oil pipe or undertightening to prevent vibration and wear.

Maintenance Recommendations: Check the clamping condition every 500 hours. If the galvanized layer peels off, the bolts loosen, or the jaws deform, immediately replace the retaining clamp and bolts to prevent the oil pipe from falling off or leaking.