Graco Inc.
Jaa |

The Great Work of “Dyna-Star” on the 984 Excavator




A global mining service company works on mining sites in Mongolia. They were using a pneumatic lubrication system installed on their “984 Liebherr Excavator”. Due to harsh working conditions, the installed unit was unable to perform accurately; hence the service company was unsatisfied with the results. The pneumatic system had failures during the harsh winter conditions due the low temperature (-40°C) during this period.

As they already had a system in place, they were looking for a new set-up which could fit the foot print of the existing one. Reliability, high efficiency, versatility and accurate lubrication were really important for their new choice!


To overcome the main issue, reliability in winter conditions, instead of a pneumatic system, Graco proposed:

  • A Dyna-Star™ 10:1 hydraulic grease pump with a 27 kg reservoir
  • A Controller GLC 4400™
  • A new Pressure Switch for injector based systems

Using the opportunity of changing the system, the GLG4400 controller was also installed on the excavator to offer more comfort to the operator and easily manage the automatic lubrication.


After few months of operation with the new system, the service company is entirely satisfied and said “It works great. We don’t fear the arrival of winter anymore!”

“Since the beginning, the proposed solution offers what we were expecting and the GLC4400 brings great added-value to the system in terms of user friendliness and reporting capabilities”.


A Global Mining Service Company

Industry Market Sector:

Mining excavator

Material Specifications:
Shell EP2; EP1 and EP0 grease

Graco Equipment:
Graco part numbers:

  • 247574
  • 247700
  • 244023
  • 24B591
  • 115124

Specification of the Graco set-up:

  • Dyna-Star 10:1 Hydraulic Pump
  • Follower Plate
  • GLC 4400 Controller
  • Level Indicator
  • Pressure Switch

Graco distributor details:
Noyonkhurd, Ulaanbaatar, Mongolia
Contact - Nyamdavaa