152-7767 Piston Pump For Caterpillar 834G wheel dozer

152-7767 Piston Pump For Caterpillar 834G wheel dozer Featured Image
  • 152-7767 Piston Pump For Caterpillar 834G wheel dozer

Short Description:

180-9588 variable axial plunger pump is aftermarket replacement for Caterpillar 424D and 416D backhoe loader equipped with 3054 series engine.

Product Detail

Product Tags

description

152-7767 axial variable piston pump acts as the core hydraulic power source of CAT 834G wheel dozer. Driven by C18 diesel engine, it converts mechanical power into high-pressure hydraulic energy to feed blade lift/tilt working circuit and steering system. Built-in load sensing control valve dynamically changes pump displacement based on real-time load. During heavy pushing or cutting, it delivers large flow and high pressure; during traveling or light load, it reduces displacement to save engine power and lower hydraulic heat accumulation. Core internal components including plungers, cylinder block, valve plate and slippers are forged from high-strength alloy steel, processed with precision grinding and nitriding hardening treatment. The friction pair keeps stable volumetric efficiency under repeated peak impact loads typical for wheel dozer earthmoving work. The thick cast iron pump housing adopts stress relief annealing to eliminate casting residual stress, resisting heavy impact and continuous vibration in dusty large mining sites.

product parameters

Part No：152-7767
Product Type：Variable Displacement Axial Piston Pump
Applicable Equipment：CAT 834G Wheel Dozer, C18 Engine
Control Mode：Load Sensing Swash Plate Control
Nominal Working Pressure：31 MPa (310 bar)
Max Instantaneous Peak Pressure：36 MPa (360 bar)
Rated Rotation Speed：2100 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-25℃ ~ +110℃
Main Material：High-density cast iron housing, high-strength alloy steel core components, FKM fluorine rubber seal
Surface Treatment：Precision grinding, nitriding hardening, stress relief annealing, anti-rust coating
Interchangeability：1:1 OEM original interchangeable, direct installation without modification
Packaging：Independent anti-rust packaging + export wooden case
Storage Environment：Dry indoor storage, moisture-proof, impact-proof, anti-corrosive gas

advantage

- 1:1 OEM full interchange, bolt-on fitment without modification
Manufactured strictly to CAT 834G wheel dozer hydraulic drawings. Mounting holes, oil ports and spline shaft fully match original 152-7767. Direct replacement cuts heavy machine downtime and on-site service labor cost.
- Nitrided alloy steel friction pair, stable performance under heavy impact cycles
Plunger, cylinder block and valve plate adopt deep nitrided alloy steel. It maintains reliable volumetric efficiency under repeated peak pushing loads, reduces internal leakage and extends service life for heavy earthmoving.
- Load sensing control design, power adaptive for heavy pushing operation
High-precision load sensing automatically adjusts displacement for variable pushing resistance. It delivers full pressure for cutting work and reduces power loss during travel, lowering fuel consumption and hydraulic heat buildup.
- Reinforced thick cast iron housing, strong shock resistance for mining job sites
Heavy reinforced cast iron housing with stress relief treatment. It handles severe impact and heavy dust in large mine and stockpile sites, preventing pump housing deformation and cracking under peak load.
- Premium FKM sealing assembly, stable sealing under high pressure and wide temperature
High-quality FKM seals resist high temperature and hydraulic oil aging. It reduces external oil seepage and internal leakage, sustaining stable pressure for combined working and steering circuits.

FAQ 

Q1: What machine does 152-7767 piston pump fit?
A1: This main hydraulic pump is specially designed for CAT834G wheel dozer equipped with C18 engine. It cannot be used for wheel loaders or other wheel dozer models. Confirm machine serial number before purchase.

Q2: Does this pump supply oil for both blade and steering circuit?
A2: Yes. It is the main hydraulic power source, supplying pressure oil for blade lift/tilt working circuit and steering system simultaneously.

Q3: What signs indicate the main piston pump has worn out?
A3: Typical symptoms: blade pushing force drops significantly under heavy load, slow blade lifting and tilting, steering becomes sluggish, pump generates abnormal rattling noise, hydraulic oil temperature rises rapidly during continuous pushing work.

Q4: What inspection items should be done before installing the new pump?
A4: Inspect main relief valve, hydraulic cylinders and filter assemblies. Flush hydraulic tank and pipelines thoroughly to remove metal debris. Check hydraulic oil cleanliness and replace contaminated oil before assembly.

Q5: Why is the blade still weak after replacing the main pump?
A5: The problem may not come from pump itself. Check main relief valve pressure setting, stuck control valve, clogged filter, or trapped air inside hydraulic circuit. Air bleeding is mandatory after installation.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

our warehouse

our warehouse

Pack and ship

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