73
Frame
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frame is equipped with G1-style crossheads or G7-style crossheads. Be sure to apply the lubricant as
specified in these instructions.
Use of Molykote type GN metal paste (high pressure lubricant) is necessary for proper
operation of the grips. Instron recommends only this brand and type of high pressure
lubricant. Use of any other lubricant risks damage to the grip components. This damage
would not be covered under warranty.
For frames with G1-style crossheads: Remove the grip jaws from the crossheads as outlined in “Remove
grip jaws - G1-style crossheads” on page 50. Add fresh lubricant to the grip jaws and reinstall them
as outlined in “Install grip jaws - G1-style crossheads” on page 46. It is not necessary to remove
existing grease before applying fresh grease.
For frames with G7-style crossheads: The jaw carriers are lubricated through grease fittings located in
the crosshead next to each jaw (see Figure 17 on page 77); a grease gun and two grease cartridges are
supplied with the grips and additional quantities can be purchased from Instron. The grease fittings apply
grease to the rear and sides of the jaw carriers. Use the following procedure to lubricate each jaw carrier.
You will need a soft cloth and the grease gun loaded with a grease cartridge.
1. Use the grip controls to fully open the grip jaws.
2. Remove the grease fitting plug (13, Figure 17) from the dust cover to access the grease fitting.
3. Using the soft cloth, wipe away any dirt or specimen debris from the grease fitting of the jaw carrier
that you want to lubricate.
4. Attach the grease gun nozzle to the grease fitting.
5. Pump the gun an appropriate amount of times until grease seeps out between the grip body and jaw
carrier. Begin with five pumps of the gun and increase or decrease the amount as experience
dictates.
6. Detach the grease gun nozzle from the fitting.
7. Repeat as necessary to lubricate the remaining jaw carriers.
8. Re-install all grease fitting plugs.
Clean and inspect grip components
The grip pockets and all grip components should be cleaned and inspected at the frequency stated in the
“Preventative maintenance schedule” on page 61, or more frequently if needed - be sure to read
Footnote 1 of this table.
It is important that the lubricant on the grip components is always moist and is not dry, clumped or dirty.
New grease guns may be difficult to detach from the fitting. If this occurs, simply loosen the nozzle from
the grease gun hose to release the spring in the nozzle. It may be necessary to pry nozzle from fitting;
use care not to damage nozzle or grips. This condition should decrease as the grease gun is broken in.
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