WESPC T400570 Rear Oil Seal for Perkins 1506A 1506D 1706J Diesel Crankshaft Part

Product Specification

WESPC T400570 Rear Oil Seal for Perkins 1506A 1506D 1706J Diesel Crankshaft Part

Application:

WESPC T400570 rear crankshaft seal kit is designed for Caterpillar C7 and C9 diesel engines, which are widely used in generator sets, construction machinery, and heavy-duty trucks. This seal kit is installed at the rear end of the crankshaft and plays a critical role in preventing engine oil leakage from the crankcase into the flywheel housing. It ensures proper lubrication containment, protects clutch and transmission components from contamination, and supports long-term engine reliability under continuous-duty and high-load conditions.

Generator sets:

Commonly installed in 250–400 kVA diesel generator platforms powered by Caterpillar C7 and C9 engines. The WESPC T400570 seal kit maintains oil integrity at the rear crankshaft interface, supporting uninterrupted operation and reducing service frequency in both standby and prime power systems. Its multi-component design ensures a secure seal even under thermal cycling and vibration.

Construction machinery:

Suitable for Caterpillar equipment such as wheel loaders, excavators, and motor graders powered by C9 engines. The seal kit withstands high mechanical stress and temperature fluctuations, preventing oil seepage and protecting rear-end components during demanding field operations. Its reinforced sealing surfaces contribute to extended service intervals and reduced downtime.

Heavy-duty trucks:

Applied in on-road and vocational vehicles using Caterpillar C7 engines, including dump trucks, mixers, and regional haulers. The WESPC T400570 seal kit ensures consistent oil retention and crankshaft sealing performance under long-haul conditions, supporting fuel efficiency and drivetrain cleanliness.

Industrial systems:

Integrated into stationary diesel-driven systems such as hydraulic pumps, compressors, and mechanical drives where rear crankshaft sealing is essential for system integrity. The kit’s press-fit configuration and wear-resistant sealing lip maintain a tight interface under fluctuating pressure and temperature conditions.

Technical specifications:

Seal type: rear crankshaft seal kit

Includes: primary oil seal, wear ring, installation sleeve

Compatible engines: Caterpillar C7, C9

Outer diameter: approx. 127.00 mm

Inner diameter: approx. 100.00 mm

Thickness: approx. 15.00 mm

Material: high-temperature elastomer with hardened steel ring

Temperature range: -40°C to +150°C

Installation: press-fit with wear ring alignment and sleeve guidance

Surface finish: low-friction sealing lip with dust exclusion features

Inspection: leak-tested for dimensional accuracy and sealing integrity

Material & performance features:

Manufactured using high-grade elastomer compounds and precision-machined steel components. The sealing lip maintains dynamic contact with the crankshaft surface, minimizing oil loss and contamination. The wear ring provides a hardened sealing surface to extend service life. Engineered to withstand vibration, rotational stress, and prolonged exposure to diesel engine environments. Produced under ISO/TS16949-certified quality control standards.

Interchange part number:

T400570; replaces Caterpillar part number 2854073. Verified fitment for Caterpillar C7 and C9 engines across generator sets, construction machinery, heavy-duty trucks, and industrial systems. Compatible with standard rebuild procedures and rear-end service protocols.