MTS Series 646 Hydraulic Collet Grips - Manual (Page 65)

Series 646 Hydraulic Collet Grips Maintenance 65
Maintenance
Hydraulic Hoses and Fittings
Check the hydraulic hoses and fittings monthly. Ensure that hoses are routed
properly and not wearing. Also ensure fittings are not leaking.
Collets
After approximately 25 hours of operation, or upon completion of a test, the
collets should be removed and an anti-seizing compound applied to the outer
threads of the collet. To service the collet:
1. Remove the collet from the grip housing (perform the applicable procedure
as described in “Removing Specimen”).
2. Clean the specimen contacting surfaces of the collet with acetone or any
other volatile solvent that does not leave a residue.
3. Apply a thin layer of Molykote G·n paste (part of the grip service kit) to the
surfaces of the collet which contact the grip housing.
4. Replace the collet into the grip housing using the applicable procedure as
described in “Installing a Collet.”
5. Repeat Steps 1 through 4 for the other grip.
Water Cooling Components
If the grips are used in an elevated temperature environment, check the water
cooling tubing and fittings weekly. Ensure that tubing is routed properly and not
wearing. Also ensure fittings are not leaking.
Daily Inspections
Ensure that hoses are routed properly, not wearing, and the fittings are not
leaking. Hoses must be routed as to avoid direct heat sources, moving or abrasive
equipment.