Instron DX Series User Manual

Chapter 4: Maintenance
82 M47-17027-EN
Change the oil
The oil in the reservoir should be changed at the frequency stated in the “Preventative maintenance
schedule” on page 61, or if the oil is determined to be dirty during a visual inspection (see “Check the
oil cleanliness” on page 80). The oil filter should be changed every time that the oil is changed. The
following procedure includes steps to change the oil filter.
Equipment and supplies required
• A 3 mm hex key
• A 4 mm hex key
• A 9/16 in socket
• A 7/8 in socket
• A 1 in deep socket
• A ratchet wrench (for the sockets that are listed above - may also need a socket adapter depending
on what the drive size requirements are)
• A torque wrench with range of at least 20 to 68 N-M (15 to 50 lbf-ft) (for the sockets that are listed
above - may also need a socket adapter depending on what the drive size requirements are)
• A hand pump or similar to remove oil from reservoir
• A clean funnel with a mesh filter
• An oil container for collection of used oil
• Clean towels, rags, or similar
• Hydraulic fluid, for fluid specifications and amount required see “Oil type and quantity” on
page 86
• New oil filter element - for Instron part number see Table 18 on page 90
• New air breather filter - for Instron part number see Table 18 on page 90
Recommended procedure
Refer to Figure 20 on page 82 for identification of components.
1. Remove the right side cover from the frame base. Refer to “Remove and install base covers” on
page 64.
2. Start the HPS and fully retract the hydraulic cylinder.
3. Press the DISABLE FRAME button in the controlling software to shut down the HPS.
4. Change the oil filter:
a. Clean the outside surfaces of the filter and manifold (5 and 9) with a cleaning solvent to remove
all dust, dirt and grime. Wipe dry with a clean towel.
b. Remove the vent plug from the top of the filter housing (use 9/16 in socket and ratchet wrench).
c. Locate relief valve “RV1” on the servo manifold (8). Loosen the relief valve (use 1 in deep socket
and ratchet wrench). By hand, continue to loosen and slowly remove the relief valve. This allows
oil to drain from the filter.
d. Wrap the relief valve in a clean towel to keep it clean, and set it aside.
e. Carefully loosen the filter housing (use 7/8 in socket and ratchet wrench. By hand, continue to
loosen and slowly remove the filter housing.
f. Wrap the filter housing in a clean towel to keep it clean, and set it aside.

Instron DX Series Specifications

General

Brand	Instron
Model	DX Series
Category	Test Equipment
Language	English