Construction EquipmentRepair &
Maintenance
Handled by

Our experienced technicians provide repair and maintenance for all types of construction equipment, regardless of manufacturer.
Our large all-weather in-house workshop is fully equipped to accept equipment at any time.
We combine technical expertise with speed, responding to every request promptly and professionally.

In-house and on-site repairs available!
Saijuki’s reliable
repair support

In-House Workshop Repairs

At our all-weather workshop located in Kumagaya, Saitama, we accept equipment for repair at any time.
Our skilled technicians handle a wide range of services, including bodywork, painting, welding, as well as engine, hydraulic, and electrical repairs.

Fast On-Site Repair Service

We respond quickly to on-site issues such as track derailment, engine starting problems, and oil leaks.
Within the Kanto region, our certified technicians can visit your site and perform repairs and maintenance for all types of construction equipment.
We help minimize downtime with fast response and support smooth on-site operations.

Why Saijuki Engineering
Prioritizes
Maintenance

Construction equipment operates under harsh conditions, making regular maintenance essential.
We provide ongoing support to extend equipment life and help prevent unexpected failures.

Professional Inspection & Diagnostics

Our mechanics provide continuous inspection and diagnostics even after manufacturer warranties expire. By accurately assessing equipment condition, we help prevent major failures and costly repairs.
We also offer scheduled inspection services tailored to your operational needs.

Preventive Maintenance for Cost Reduction

Regular maintenance, including oil changes and parts replacement, helps extend equipment life and reduce unexpected repair costs and downtime.

Our maintenance service goes beyond basic inspection.
We help improve site efficiency, prevent delays caused by equipment failure, and support smooth project completion.

handles
the following repair & maintenance
services!

We handle all types of construction equipment issues,
including hydraulic cylinders, engine repairs, oil leaks, and regular maintenance.

  • Cylinder Service

    We handle oil leak repairs, overhauls, bent cylinders, surface damage, re-plating, and supply of rebuilt rods and cylinders.
    If you have cylinder-related issues, contact Saijuki Engineering.

  • Engine Service

    We provide engine repairs, oil leak fixes, overhauls, engine replacement, and supply of new, used, and rebuilt engines, as well as turbochargers.

  • Undercarriage Service

    We handle rubber track replacement, rubber pad installation, carrier and track roller replacement, link assembly replacement, and adjuster cylinder replacement.
    We also offer competitively priced rubber tracks and pads.

  • Oil Leak Repair

    We resolve oil leak issues involving travel motors, hydraulic pumps, control valves, swivels, cylinders, and attachments.
    Hydraulic hose fabrication, supply, and on-site installation are also available.

  • Hydraulic Hose Fabrication & Repair

    For hydraulic hose fabrication and repair, trust Sai Juki Engineering, an authorized Yokohama Rubber dealer.
    We stock a wide range of fittings and adapters to support various types of machinery.
    On-site hose repair service is currently under preparation.

  • Welding, Bodywork & Painting

    We handle boom and arm reinforcement, bucket build-up welding, attachment repairs, painting, and cabin or body repairs.
    All work is performed carefully from surface preparation to finishing.

  • Electrical Systems

    We resolve wiring issues, starter motor and alternator overhauls, and supply rebuilt components.

  • Regular Maintenance

    Regular replacement of filters such as oil, fuel, and air filters, along with oil changes, helps extend equipment life and prevent breakdowns.

Service area

We provide on-site service across the Kanto region, including Tokyo, Kanagawa, Chiba, Saitama, Gunma, Tochigi, and Ibaraki.
We may also support nearby regions such as Nagano and Fukushima.

※Travel fees may apply depending on distance.

Over 300 repair jobs handled annually.
Experienced technicians are always available.
  • Sudden equipment stoppage on site
  • End of manufacturer support
  • Unknown models or unavailable parts
  • Abnormal noise or vibration

We can handle all heavy machinery troubles.

Repair examples

Please consult
Saijuki!
Contact form
Contact us by email
048-501-6352
Contact us by phone