MTS 318 Load Unit - Manual (Page 86)

318 Load Unit 86
Routine Maintenance Overview Checklist
Maintenance
14. Move the crosshead, locking and unlocking it, to check for smooth
operation.
318 Load Unit: Lubricate the Crosshead Locking Bolts
Lubricate the locking bolts in a manually locked crosshead whenever they begin
to be hard to tighten or sticky when loosened.
1. Remove the covers on the ends of the crosshead. The crosshead covers must
be removed to lubricate the crosshead locking bolts. Four 1/4-20 screws
(two top, two bottom) on each cover need 5/21 hex (not included). Hand
tighten when reinstalling the covers.
2. Position the crosshead at a comfortable working height.
3. Lock the crosshead following your normal crosshead locking procedure.
4. Remove a single locking bolt.
5. Clean the bolt threads with a stiff nylon brush. Use degreaser if necessary.
Dry the threads.
Then lightly lubricate the threads with Molykote ® G-n paste.
6. Reinstall the locking bolt, tightening it to a value specified in the following
table.
7. Repeat Steps 4 and 5 until all the bolts have been lubricated.
L OAD U NIT T ORQUE
318.10 190 N·m (140 lbf·ft)
318.25 271 N·m (200 lbf·ft)
318.50 271 N·m (200 lbf·ft)
Unscrew one
at a time
Clean and
lubricate