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5.3 Lubrication
5.3.1 Drive Chain, Sprockets & Idler Shaft
The drive chain, sprockets & idler shaft have been greased at the factory. The chain should be thoroughly
cleaned and re-greased once a year using a multi-purpose grease. The idler shaft should also be greased at the
same time.
5.3.2 Gear Reducer
The gear reducer is shipped filled with oil. Check the oil level every six months and add oil if required. Under
normal sampler operating conditions the oil should be changed once every two years.
Use a gear lubricant with an AGMA #8 rating for normal operating conditions. Use a synthetic gear lubricant such
as "Mobil SHC 634" for extreme operating conditions.
5.4 Mechanical Repair Procedures
5.4.1 Drive Chain Adjustment
The drive chain will need adjustment periodically to maintain proper tension. The chain is attached to the sample
pelican drive nose by means of two eye bolts. Loosen, adjust and re-tighten the eye bolt nuts to increase or
decrease chain tension. The chain only needs to be tight enough to prevent any sag or slack. As the chain wears
it will stretch to a point where the adjustment of the eye bolts will no longer permit further tightening. Shorten the
chain by removing a link if necessary.
5.4.2 Limit Switch Adjustment
Loosen and adjust the limit switch arm if required. The limit switches trip on the drive nose of the sampler and
signal the control to remove power from the motor. They should trip before the sample pelican completes its
traverse. When a limit switch trips the sample pelican should gently coast to a stop under the dust seal and up
against the bumper.
5.4.3 Sample Cutter Blade Replacement
When following the instructions below, refer to the applicable drawing of the sampler. Reference the drawing of
the sampler on page 21 and the certified drawing(s).
A. Shutoff and lockout all power (electrical, pneumatic and hydraulic).
B. Shut down conveying line.
C. Open the seal door near the sample cutter.
D. Remove the 1/4-20UNC hex head bolts fastening the sample cutter to the sample pelican.
E. Using a utility knife, cut the caulking seal around the bottom of the cutter blade and remove.
F. Install the new cutter blade on the sample pelican.
G. Re-install the 1/4-20UNC hex head bolts fastening the sample cutter to the sample pelican.
H. Re-caulk the joint between the cutter blade and the sample pelican to ensure a tight seal.
