KNIGHT SMART CART OPERATION MANUAL
SECTION 4
MAINTENANCE
21
4.4.3 Chain Lubrication:
Keep chain well lubricated. Never operate a cart when the load chain does not flow freely and
smoothly into and out of the gear box assembly or when it makes noises indicative of binding or
other malfunctions. Replace the chain if it is visibly damaged in any way.
Clean, lubricate, and inspect the load chain based on the frequent inspection criteria described in
section 4.4.1. In a corrosive environment, lubricate more frequently than normal. Failure to
maintain a clean and well lubricated load chain will result in rapid load chain wear that can lead to
chain failure which can cause severe injury, death or substantial property damage.
If required, clean the chain with acid free solvent to remove rust or abrasive dust buildup before
the chain is lubricated.
Lubricate each link of the chain with a light coat machine or gear oil. Knight recommends using
Demag Chain Grease (P/N 665 009 44). Ensure that oil is applied to all roller chain links and
rollers. (Refer to Figure 4-4: Chain Lubrication – P/N 665 009 44). If Demag Chain Grease is
not available, SAE 50 to 90 EP oil or equivalent may be used.
Substitute a dry lubricant for use in dusty environments. Lubricate hook and safety latch pivot
points with same lubricant used on the load chain.
Lubricate chain without load on chain. This will allow lube to penetrate between links.
WARNING
Failure to maintain clean and lubricated load chain will void the
manufacturer’s warranty.
4.4.4 Load Chain Replacement:
Care should be taken to re-install the chain without any twists down the entire chain’s length
between the gear box and its anchored end in the chain nest. Proper orientation of the entering
link should be established since a twist cannot be corrected except by removing and re-installing
the chain.
Refer to 4.6 “Load and Safety Drop Stop Chain Replacement (Normal Maintenance)” for further
instructions on how to replace load chain.
Figure 4-4: Chain Lubrication – P/N 665 009 44
