Kärcher LANDA ECOS 7000 Series Service Manual

Also see for LANDA ECOS 7000 Series: Operator's manual

11Important Trailer Safety InformationMaintenanceKeep ball pocket and mechanism clean. The followingprocedures should be performed at least annually:• Check set screw torque Grease ball pocket• Oil pivot points with SAE 30 wt. motor oil• Inspect retaining pin and replace if necessaryOperationTo Couple:1. Block trailer wheels.2. Align hitch ball beneath coupler.3. Open coupler locking lever. While holding lockinglever open, lower the coupler over the hitch balluntil ball is fully seated into the ball pocket.4. If locking lever is pinned open, remove pin. Movelocking lever to the closed position. Check that thelatch is engaged by lifting up on back of lockinglever. Also, check that the hitch ball is fully seatedand ball clamp is below the ball. If the ball is notseated with lever in the closed position and latchengaged, DO NOT TOW.Repeat the above steps.5. OPTIONAL: Place a 5/16” pin or lock in hole shownTo Uncouple:1. Block trailer wheels.2. Open locking lever. While holding locking lever fullyopen, raise trailer off of hitch ball.NOTE: A 5/16” diameter pin can be used to hold thelocking lever open.Hitch Coupler TroubleshootingIf the coupler becomes damaged it must be repaired orreplaced before towing. When the coupler is placed onthe ball, the latch should close firmly. Keep the latchmechanism lightly oiled and clean. Items to check forare as follows:1. Latch does not grasp ball securely:• Check the ball size. Make sure the ball andcoupler are the same size.2. Latch does not snap into full latch position:• Check adjustment. Latch mechanism may betoo tight.• Check to see that the coupler housing has notbeen damaged, keeping the ball hitch fromfitting completely into the housing as designed.3. Keep the tongue blocked up when not in use so thecoupler and mechanism are not in the groundbeing exposed to dirt and moisture.4. Apply a small amount of an automotive grease tothe ball before hitching coupler to prevent wear ofthe two parts during towing.5. Make sure the latch safety pin is in position beforetowing.Coupler & Ball EngagementIf the coupler and towing ball resist attempts to makeengagement, do not force latch assembly. Instead,check the ball diameter to verify that it conforms toSociety of If the coupler and towing ball resist attemptsto make engagement, do not force latch assembly.Instead, check the ball diameter to verify that itconforms to Society of Automotive Engineers (SAE)specifications. Standard two-inch diameter ball shouldbe within the limits of 2.000-inches to 1.970-inches.Balls larger than 2.000- inches will not readily fit thecoupler. A two-piece coupler ball is not recommended.If the coupler becomes damaged it must be repaired orreplaced before towing. When the coupler is placed onthe ball, the latch should close firmly. Keep the latchmechanism lightly oiled and clean.Improper engagement of the coupler and ball cancause damage if the vehicles separate in transit, thus,caution must be exercised to insure a secure hook-up.Lower the coupler onto the ball with the coupler latch inthe vertical position. Continue to lower the trailertongue until the jack clears the ground, then flip thecoupler latch to its locked (horizontal) position. At thispoint visually observe that the ball is fully engaged inthe ball hitch. An even better check to make sure thetwo are fully engaged is to raise the tongue of the traileragain using the jack. Raise until the ball hitch connec-tion starts to raise the rear of the tow vehicle. If theconnection was not properly made, the ball and socketwill separate as the tongue of the trailer is raised.Landa ECOS Trailer 7000 Service Manual 9.801-315.0 - AC