Komatsu HD785‑7 hoist cylinder seal kit 707‑99‑79430

Heavy-duty hydraulic seals for HD785‑7 hoist cylinder

707‑99‑79430 service kit O‑rings and seals

Cylinder head seals for Komatsu dump truck

Premium rubber seals for Komatsu hydraulic pump

707‑99‑79430 Komatsu HD785‑7 Hoist Cylinder Service Kit

Complete service kit for Komatsu HD785‑7 hoist cylinder, ensuring leak‑free hydraulic lifting.

Product Features

Includes all seals, O‑rings, and gaskets for maintenance
OEM part 707‑99‑79430 equivalent ensures perfect compatibility
High-grade rubber seals resist pressure, heat, and hydraulic oil
Simplifies service process, reducing hoist-cylinder downtime
Enhances dump truck hoist performance and reliability

Get A Free Quote

Hoist Cylinder Service Kit Description

The Komatsu 707‑99‑79430 Hoist Cylinder Service Kit is designed for HD785‑7 dump truck hoist cylinders. The kit includes precision-molded seals, gaskets, and O‑rings necessary to rebuild or refurbish the cylinder for reliable performance. Using high-quality synthetic materials, the seals resist high-pressure hydraulic fluids, heat, and wear—ensuring operational integrity during demanding lifting cycles. The kit is fully compatible with OEM specifications and streamlines maintenance by reducing part sourcing times. It is an ideal choice for fleet owners, service shops, and parts buyers looking to restore cylinder efficiency and eliminate leaks.

Hoist Cylinder Service Kit Technical/Data Sheet

Parameter	Description
OEM Part Number	707‑99‑79430
Applicable Models	Komatsu HD785‑7 dump truck hoist cylinder
Kit Components	Seals, O‑rings, gaskets for entire cylinder assembly
Material	High-grade rubber and synthetic seals
Usage	Service kit for hoist cylinder overhaul
Origin	China
Brand	YNF Rubber
MOQ	5 sets
Shipping	Sea freight or air freight
Payment Terms	T/T, L/C

Get Free Quote of Service Kit

YNF Rubber’s 707‑99‑79430 service kit delivers OEM‑matched quality for the HD785‑7 hoist cylinder, helping you restore hydraulic lift reliability and eliminate leaks. By simplifying the overhaul process and reducing service time, it supports operational uptime in heavy-duty haulage fleets. Contact us now for a free quote—technical assistance included.

Get A Free Quote Now

Products Categories

Flexible Rubber Couplings

CF-H Couplings

CF-A Couplings

FLANGE Couplings

Spline Hubs

Gear Hubs

S Series Couplings

KY Series Couplings

CB Series Couplings

TFC Couplings

Damper

Clutch

KE Series Couplings

YC Series Couplings

GC Series Couplings

Rubber Blocks

J Series Couplings

HRC Couplings

NM Couplings

HEX Couplings

Flexmaster System (Hose Coupling)

Rubber Mounts

FOR BREAKERS / COMPACTORS

EXCAVATOR ENGINE MOUNTS

EXCAVATOR CAB SHOCK ABSORBER

Cylindrical Bobbins

Captive Transit Mountings

Rubber Hoses

Radiator Water Hose

Intake Manifold

Bypass Hose (Water Pump Hose)

Oil-Proof Hose

Other Hoses

Hose Clamps

Silicone Hoses

Hydraulic Seals

By Brands

for Bobcat machines

for Case machines

for Caterpillar machines

for Doosan / Daewoo machines

for Hitachi machines

for Hyundai machines

for Komatsu machines

for TAKEUCHI machines

for Volvo machines

for Yanmar machines

for Terex machines

for Air Compressor

for Kobelco machines

for JCB machines

for Kato machines

for New Holland machines

for Dynapac machines

Get A Free Quote

Hoist Cylinder Service Kit Applications

Use Case	Description
Dump Truck Maintenance	Hoist cylinder overhaul for HD785‑7 dump truck
Heavy Haulage Fleets	Prevents hydraulic lifting failure and oil leakage
Service Workshops	Streamlined kit for cylinder repairs
Fleet Owners & OEMs	Supports planned maintenance, extends component lifespan

Hoist Cylinder Service Kit Detail Display

High-pressure piston seal kit for HD785‑7

More Information

Knowledge Base

Why hoist cylinder seals fail and how to prevent costly downtime
Best practices for seal kit installation and inspection
Seal material choices for heavy-load hydraulic applications

Related Products

707‑99‑79431 Komatsu HD785‑7 Final Drive Seal Kit
YNF04106 JCB Rotary Coupling Seal Kit

FAQs

Does this kit cover all seals necessary for cylinder rebuild?
Yes, it includes all O‑rings, gaskets, and seals typical of a full cylinder overhaul.
What’s the delivery timeframe?
Samples ship in 7 days; sea freight: 30–45 days; air freight: 7–10 days.
Is OEM packaging provided?
Yes, OEM-style packaging and branding available for bulk orders on request.