Head As. 263-3391

Wheel Loader Caterpillar 938H

Lift Cylinder Bore 129,90 Stroke 693,00 Hydraulic Cylinder

2633391

36 kg

Compatible Brand: Caterpillar

Part Number: 263-3391 (2633391)

Superseded / Interchange Numbers: 263-3391, 2633391

Part Name: Wheel Loader Lift Cylinder Head Assembly / Gland Assembly

Teknik Özellikler / Technical Specifications: Cylinder Bore Fitment: 129.90 mm / Stroke: 693.00 mm / Weight: ~36 kg / Hydraulic Cylinder Head / Gland Component

Compatible Machinery: Caterpillar Wheel Loaders (938H series)

What It Does:

Serves as the heavy-duty cylinder head (gland assembly) mounted at the front end of the boom lift hydraulic cylinders on Caterpillar 938H series wheel loaders. It securely closes the front section of the cylinder barrel to contain high-pressure hydraulic fluid while providing precision guiding and alignment for the reciprocating piston rod. Housing rod seals, buffer rings, wiper seals, and wear bands, it maintains high-pressure hydraulic sealing and prevents external contaminants such as abrasive dust, dirt, and moisture from penetrating the cylinder.

Importance:

A critical structural and sealing component essential for rod alignment, smooth stroke cycling, and total fluid retention during demanding bucket lifting, stockpiling, and truck loading operations. Precision-machined to fit a 129.90 mm bore cylinder with a robust 36 kg heavy-duty construction, it effectively absorbs extreme dynamic shock pulses, side loads, and mechanical vibrations transmitted through the loader lift arms, protecting internal seals, reducing rod scoring, and preventing external oil leakage under continuous demanding job-site conditions.

As Seçkin Makine, we manufacture this product as an aftermarket item fully equivalent to the original specifications in terms of raw materials, technical dimensions, and performance characteristics. This product comes with a 1-year warranty from the invoice date.