Description
7W-2731: Indicator Retainer
| 7W-2731: Indicator Retainer |
| 219-1241: 30mm Inside Diameter Single Row Ball Bearing |
| 3G-0910: 101.75mm Minimum ID Steel Bearing Cap |
| 7J-4983: Two Bolt Bearing Cap |
| 177-4143: Bearing – Cone(Debris Resistant) |
| 3T-5923: 122mm Outer Diameter Steel Round Retainer |
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| 108-8283: Bolt-On Trunnion |
The Cat 7W-2731 is a Caterpillar engine instrument/sensor system indicator retainer. Its core function is to secure critical indicators such as engine speed and oil pressure. It is compatible with various heavy-duty engine instrument assemblies, ensuring stable installation and signal stability under vibration conditions. The following are the key specifications:
Key Parameters
Item Details
Type: Indicator retainer/locator (used for instrument panel or engine sensor mounting interfaces to secure tachometers, oil pressure indicators, etc., absorbing equipment vibration and preventing indicator loosening or displacement)
Compatible Models: Cat 3208, 3304, 3306, 3406B/C, 3408, 3412 series engines; compatible with Cat 621E/623E/627E loaders, D8N bulldozers, 773E mining trucks, etc., used for securing indicators in engine instrument assemblies and sensor interfaces.
Material and Process: Material: Cold-rolled steel plate (Q235), galvanized + Passivation treatment enhances corrosion resistance; Structure: U-clamp + positioning bolt design, compatible with indicator mounting holes, adjustable clamping force via bolt tightening; Accuracy: Mounting hole tolerance ±0.1mm, ensuring compatibility with indicators
Key Dimensions: Length 35mm (1.378 inches), Width 22mm (0.866 inches), Height 18mm (0.709 inches), Mounting hole diameter 8mm (0.315 inches), Weight approx. 0.05kg (0.11 lbs), compatible with indicator mounting rod diameter 6-8mm
Installation Requirements: Installed in the instrument panel’s pre-drilled mounting location or engine sensor interface, via M6… Tighten bolts, clean the mounting surface before installation, ensure the retainer fits snugly against the indicator, and check for looseness after installation to ensure stable signal transmission.
Functions and Application Scenarios
Core Function: Provides a stable mounting position for engine indicators, absorbs vibration and impact during equipment operation, prevents indicator loosening, displacement, or damage, ensures accurate indicator readings and stable signal transmission, and is suitable for stable operation of instrument systems under harsh conditions in heavy equipment.
Application Scenarios: Used to replace retainers when engine instruments exhibit abnormal readings, flashing indicator lights, or loose indicators, and inspection reveals wear, deformation, or corrosion of the retainer. Suitable for instrument system maintenance needs during minor/medium engine overhauls.
Performance Characteristics
Cold-rolled steel plate with galvanized passivation treatment provides both good strength and corrosion resistance, suitable for humid and dusty engine operating conditions.
U-shaped clamp + positioning bolt design allows for adjustable clamping force, adapts to different indicator sizes, facilitates easy installation, and enables quick replacement.
Precise size control ensures compatibility with indicator mounting holes, reduces installation errors, guarantees stable indicator installation, and minimizes the impact of vibration on the signal.
